WO2022179108A1 - Projection correction method and apparatus, storage medium, and electronic device - Google Patents
Projection correction method and apparatus, storage medium, and electronic device Download PDFInfo
- Publication number
- WO2022179108A1 WO2022179108A1 PCT/CN2021/122446 CN2021122446W WO2022179108A1 WO 2022179108 A1 WO2022179108 A1 WO 2022179108A1 CN 2021122446 W CN2021122446 W CN 2021122446W WO 2022179108 A1 WO2022179108 A1 WO 2022179108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- projection
- position information
- area
- boundary
- Prior art date
Links
- 238000012937 correction Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000003384 imaging method Methods 0.000 claims abstract description 87
- 238000012545 processing Methods 0.000 claims description 24
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 8
- 230000011218 segmentation Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 7
- 239000003550 marker Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 241000226585 Antennaria plantaginifolia Species 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010845 search algorithm Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
Definitions
- a processing module configured to determine the first position information of each of the second marking patterns in the captured image
- the projection device can first project a prompt image on the imaging medium to prompt the user to use the mobile phone to pair the mobile phone with the projection device. After successful pairing, the projection device can project the corrected image onto the imaging medium to obtain the projected corrected image, and then prompts the user to align the camera interface of the mobile phone with the projected corrected image, and prompts the user to use the mobile phone to shoot the projected corrected image. Afterwards, the projection device can acquire the image obtained by shooting the projection correction image by the mobile phone, and preprocess the image obtained by shooting the projection correction image to obtain the captured image. Further, in order to reduce the amount of data that the projection device needs to process, the mobile phone can also preprocess the image obtained by shooting the projection correction image to obtain the captured image, and send the obtained captured image to the projection device.
- the corrected image may be any image including a plurality of first marking patterns.
- the first marking pattern can be any square in the checkerboard
- the projection device projects the corrected image onto the imaging medium, actually projecting the checkerboard onto the imaging medium.
- the image obtained by the image acquisition device shooting the projection-corrected image also includes the checkerboard
- the captured image obtained by preprocessing the image obtained by shooting the projection-corrected image also includes the checkerboard (that is, the captured image is also a checkerboard image)
- the second mark pattern can be any square in the checkerboard.
- the area enclosed by the third boundary is used as the area to be corrected.
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The present invention relates to the technical field of projection, and relates to a projection correction method and apparatus, a storage medium, and an electronic device. The projection correction method comprises: projecting a correction image onto an imaging medium to obtain a projection correction image displayed on the imaging medium, and obtaining an acquired image; determining first position information of each second mark pattern in the acquired image; determining, according to the first position information of each second mark pattern and second position information of each first mark pattern, a first boundary formed by the projection correction image in the acquired image; determining a target projection area on the imaging medium according to the first boundary; and projecting an image to be projected onto the imaging medium according to the target projection area, so as to display, in the target projection area, information comprised in the image to be projected. According to the present invention, it can be ensured that distortion does not occur when the image to be projected is projected onto the imaging medium, the projection effect satisfying requirements of a user can be obtained, manual adjustment of the user is not needed, the operation is simple, and the efficiency of correcting the projection is high.
Description
相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS
本公开要求在2021年02月24日提交中国专利局、申请号为202110206396.5、名称为“投影校正方法、装置、存储介质和电子设备”的中国专利申请的优先权,其全部内容通过引用结合在本公开中。This disclosure claims the priority of a Chinese patent application with application number 202110206396.5 and entitled "Projection Correction Method, Apparatus, Storage Medium and Electronic Device" filed with the China Patent Office on February 24, 2021, the entire contents of which are incorporated by reference in in this disclosure.
本公开涉及投影技术领域,具体地,涉及一种投影校正方法、装置、存储介质和电子设备。The present disclosure relates to the field of projection technology, and in particular, to a projection correction method, device, storage medium and electronic device.
为了满足人们对大尺寸屏幕的观看需求,投影设备被广泛应用于家庭、办公室、学校和娱乐场所中。投影设备可以向成像媒介进行投影,以在成像媒介上显示对应的投影图像,其中,成像媒介例如可以是投影幕布、墙面或硬屏。然而,在投影设备向成像媒介进行投影时,投影图像可能会发生畸变,这会影响投影设备的投影效果。例如,对于短焦或超短焦投影设备,由于投影光机的设计工艺、加工工艺和装配工艺的限制,可能会致使投影设备在成像媒介上投影出的投影图像发生枕形畸变或桶形畸变,这种畸变不会随着投影设备与成像媒介的相对位置的变化而消失。In order to meet people's viewing needs for large-size screens, projection equipment is widely used in homes, offices, schools and entertainment venues. The projection device may project onto an imaging medium to display a corresponding projected image on the imaging medium, where the imaging medium may be, for example, a projection screen, a wall or a hard screen. However, when the projection device projects to the imaging medium, the projected image may be distorted, which affects the projection effect of the projection device. For example, for short-throw or ultra-short-throw projection equipment, pincushion distortion or barrel distortion may occur in the projected image projected by the projection equipment on the imaging medium due to the limitations of the design process, processing technology and assembly process of the projector. , this distortion will not disappear with the relative position of the projection device and the imaging medium.
发明内容SUMMARY OF THE INVENTION
为了解决相关技术中存在的问题,本公开提供了一种投影校正方法、装置、存储介质和电子设备。In order to solve the problems existing in the related art, the present disclosure provides a projection correction method, apparatus, storage medium and electronic device.
为了实现上述目的,根据本公开实施例的第一方面,提供一种投影校正方法,应用于投影设备,所述方法包括:In order to achieve the above object, according to a first aspect of the embodiments of the present disclosure, a projection correction method is provided, which is applied to a projection device, and the method includes:
将预设的校正图像投影至成像媒介上,以得到所述成像媒介上展示的投影校正图像,并获取采集图像;所述采集图像为根据图像采集装置拍摄所述投影校正图像所得到的图像确定的,所述校正图像包括多个第一标记图案, 所述采集图像包括与每个所述第一标记图案对应的第二标记图案;Projecting a preset corrected image onto an imaging medium to obtain a projected corrected image displayed on the imaging medium, and acquiring a captured image; the captured image is determined according to an image obtained by photographing the projected corrected image by an image acquisition device The corrected image includes a plurality of first mark patterns, and the captured image includes a second mark pattern corresponding to each of the first mark patterns;
确定所述采集图像中的每个所述第二标记图案的第一位置信息;determining first position information of each of the second marking patterns in the captured image;
根据每个所述第二标记图案的第一位置信息和每个所述第一标记图案的第二位置信息,确定所述投影校正图像在所述采集图像中形成的第一边界;determining, according to the first position information of each of the second marking patterns and the second position information of each of the first marking patterns, a first boundary formed by the projection correction image in the captured image;
根据所述第一边界,确定在所述成像媒介上的目标投影区域;determining a target projection area on the imaging medium according to the first boundary;
按照所述目标投影区域将待投影图像投影至所述成像媒介上,以在所述目标投影区域内展示所述待投影图像包括的信息。The to-be-projected image is projected onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area.
根据本公开实施例的第二方面,提供一种投影校正装置,应用于投影设备,所述装置包括:According to a second aspect of the embodiments of the present disclosure, there is provided a projection correction apparatus, which is applied to a projection device, the apparatus comprising:
获取模块,用于将预设的校正图像投影至成像媒介上,以得到所述成像媒介上展示的投影校正图像,并获取采集图像;所述采集图像为根据图像采集装置拍摄所述投影校正图像所得到的图像确定的,所述校正图像包括多个第一标记图案,所述采集图像包括与每个所述第一标记图案对应的第二标记图案;an acquisition module, configured to project a preset corrected image onto an imaging medium to obtain a projected corrected image displayed on the imaging medium, and acquire a captured image; the captured image is to capture the projected corrected image according to an image capturing device It is determined from the obtained image that the corrected image includes a plurality of first mark patterns, and the captured image includes a second mark pattern corresponding to each of the first mark patterns;
处理模块,用于确定所述采集图像中的每个所述第二标记图案的第一位置信息;a processing module, configured to determine the first position information of each of the second marking patterns in the captured image;
所述处理模块,还用于根据每个所述第二标记图案的第一位置信息和每个所述第一标记图案的第二位置信息,确定所述投影校正图像在所述采集图像中形成的第一边界;The processing module is further configured to determine that the projection correction image is formed in the captured image according to the first position information of each of the second marking patterns and the second position information of each of the first marking patterns the first boundary of ;
所述处理模块,还用于根据所述第一边界,确定在所述成像媒介上的目标投影区域;The processing module is further configured to determine a target projection area on the imaging medium according to the first boundary;
校正模块,用于按照所述目标投影区域将待投影图像投影至所述成像媒介上,以在所述目标投影区域内展示所述待投影图像包括的信息。The correction module is configured to project the to-be-projected image onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area.
根据本公开实施例的第三方面,提供一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时实现以上第一方面中任一项所述方法的步骤。According to a third aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of the method in any one of the above first aspects.
根据本公开实施例的第四方面,提供一种电子设备,包括:According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic device, comprising:
存储器,其上存储有计算机程序;a memory on which a computer program is stored;
处理器,用于执行所述存储器中的所述计算机程序,以实现第一方面中任一项所述方法的步骤。A processor for executing the computer program in the memory to implement the steps of any one of the methods in the first aspect.
通过上述技术方案,本公开首先通过将预设的校正图像投影至成像媒介上,以得到成像媒介上展示的投影校正图像,并获取采集图像,其中,采集图像为根据图像采集装置拍摄投影校正图像所得到的图像确定的,校正图像包括多个第一标记图案,采集图像包括与每个第一标记图案对应的第二标记图案,之后确定采集图像中的每个第二标记图案的第一位置信息,并根据每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,确定投影校正图像在采集图像中形成的第一边界,再根据第一边界,确定在成像媒介上的目标投影区域,然后按照目标投影区域将待投影图像投影至成像媒介上,以在目标投影区域内展示待投影图像包括的信息。本公开通过确定投影校正图像中未发生畸变的目标投影区域,并按照目标投影区域将待投影图像投影至成像媒介上,可以确保将待投影图像投影至成像媒介上时不会发生畸变,能够获得满足用户要求的投影效果,无需用户手动调节,操作简单,对投影进行校正的效率高。Through the above technical solutions, the present disclosure first obtains a projected corrected image displayed on the imaging medium by projecting a preset corrected image onto the imaging medium, and acquires a captured image, wherein the captured image is a projected corrected image captured by an image capturing device The obtained image is determined, the corrected image includes a plurality of first marking patterns, the acquired image includes a second marking pattern corresponding to each first marking pattern, and then the first position of each second marking pattern in the acquired image is determined information, and according to the first position information of each second mark pattern and the second position information of each first mark pattern, determine the first boundary formed by the projection correction image in the captured image, and then according to the first boundary, determine the The target projection area on the imaging medium, and then the to-be-projected image is projected onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area. In the present disclosure, by determining a target projection area without distortion in the projection correction image, and projecting the to-be-projected image onto the imaging medium according to the target projection area, it can ensure that the to-be-projected image will not be distorted when projecting the to-be-projected image onto the imaging medium, and can obtain The projection effect that meets the user's requirements does not require manual adjustment by the user, the operation is simple, and the efficiency of correcting the projection is high.
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present disclosure will be described in detail in the detailed description that follows.
附图是用来提供对本公开的进一步理解,并且构成说明书的一部分,与下面的具体实施方式一起用于解释本公开,但并不构成对本公开的限制。在附图中:The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification, and together with the following detailed description, are used to explain the present disclosure, but not to limit the present disclosure. In the attached image:
图1是根据一示例性实施例示出的一种投影校正方法的流程图;1 is a flowchart of a projection correction method according to an exemplary embodiment;
图2是根据一示例性实施例示出的一种校正图像的示意图;FIG. 2 is a schematic diagram of a corrected image according to an exemplary embodiment;
图3是图1所示实施例示出的一种步骤101的流程图;Fig. 3 is a flow chart of step 101 shown in the embodiment shown in Fig. 1;
图4是图1所示实施例示出的一种步骤103的流程图;Fig. 4 is a flow chart of step 103 shown in the embodiment shown in Fig. 1;
图5是图1所示实施例示出的一种步骤104的流程图;Fig. 5 is a flow chart of step 104 shown in the embodiment shown in Fig. 1;
图6是根据一示例性实施例示出的一种投影校正装置的框图;6 is a block diagram of a projection correction apparatus according to an exemplary embodiment;
图7是根据一示例性实施例示出的一种电子设备的框图。Fig. 7 is a block diagram of an electronic device according to an exemplary embodiment.
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的 要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as recited in the appended claims.
在介绍本公开提供的投影校正方法、装置、存储介质和电子设备之前,首先对本公开各个实施例所涉及应用场景进行介绍,该应用场景可以包括投影设备、图像采集装置和成像媒介。投影设备可以将自身播放的图像或视频投影至成像媒介上,以在成像媒介上显示对应的投影图像。其中,投影设备可以包括但不限于投影仪、投影电视等,例如,投影设备可以是短焦或超短焦的投影仪,也可以是长焦投影仪。图像采集装置用于拍摄在成像媒介上显示的投影图像,图像采集装置可以是投影设备自身搭载的摄像头模块(例如:摄像头、图像传感器等),也可以是通过有线连接或无线连接与投影设备相分离的、可移动的摄像头模块,还可以是具备拍摄功能的终端(即第三方硬件),该终端例如可以是智能手机、平板电脑、智能手表、智能手环、PDA(英文:Personal Digital Assistant,中文:个人数字助理)等终端。成像媒介可以是投影幕布、墙面、硬屏以及其他任意能够显示投影设备的投影的器件,本公开对此不作具体限定。Before introducing the projection correction method, device, storage medium, and electronic device provided by the present disclosure, the application scenarios involved in various embodiments of the present disclosure are first introduced, and the application scenarios may include projection devices, image acquisition devices, and imaging media. The projection device can project the image or video played by itself onto the imaging medium to display the corresponding projected image on the imaging medium. The projection device may include, but is not limited to, a projector, a projection television, and the like. For example, the projection device may be a short-throw or ultra-short-throw projector, or a telephoto projector. The image acquisition device is used to capture the projection image displayed on the imaging medium. The image acquisition device can be a camera module (such as a camera, an image sensor, etc.) mounted on the projection device itself, or it can be connected to the projection device through a wired or wireless connection. The separated and movable camera module can also be a terminal with a shooting function (ie, third-party hardware), for example, the terminal can be a smart phone, a tablet computer, a smart watch, a smart bracelet, a PDA (English: Personal Digital Assistant, Chinese: personal digital assistant) and other terminals. The imaging medium may be a projection screen, a wall, a hard screen, or any other device capable of displaying the projection of the projection device, which is not specifically limited in the present disclosure.
在一种场景中,当投影设备在成像媒介上投影出的投影图像发生枕形畸变或桶形畸变时,可以采用以下实施例所示的方式对投影图像进行校正:In a scenario, when the projection image projected by the projection device on the imaging medium has pincushion distortion or barrel distortion, the projection image can be corrected in the manner shown in the following embodiment:
图1是根据一示例性实施例示出的一种投影校正方法的流程图。如图1所示,应用于投影设备,该方法可以包括以下步骤:Fig. 1 is a flowchart of a projection correction method according to an exemplary embodiment. As shown in Figure 1, applied to a projection device, the method may include the following steps:
步骤101,将预设的校正图像投影至成像媒介上,以得到成像媒介上展示的投影校正图像,并获取采集图像。Step 101: Project a preset corrected image onto an imaging medium to obtain a projected corrected image displayed on the imaging medium, and acquire a captured image.
其中,采集图像为根据图像采集装置拍摄投影校正图像所得到的图像确定的,校正图像包括多个第一标记图案,采集图像包括与每个第一标记图案对应的第二标记图案。Wherein, the collected image is determined according to an image obtained by photographing the projected corrected image by the image collecting device, the corrected image includes a plurality of first mark patterns, and the collected image includes a second mark pattern corresponding to each of the first mark patterns.
示例地,在投影设备将某一图像投影至成像媒介上时,若用户发现该图像对应的投影图像发生了枕形畸变或桶形畸变,可以向投影设备发送校正指令,以对投影图像进行校正。例如,可以在投影设备上设置有相应的校正按钮,用户可以通过按下该校正按钮来向投影设备发送校正指令。之后投影设备可以向用户发送相应的提示信息,来提示用户将图像采集装置的位置调整 到合适的位置,以使图像采集装置可以准确地拍摄投影设备在成像媒介上的投影图像,从而更准确地对投影图像进行校正。For example, when the projection device projects an image onto the imaging medium, if the user finds that the projection image corresponding to the image has pincushion distortion or barrel distortion, a correction instruction can be sent to the projection device to correct the projected image. . For example, a corresponding correction button may be provided on the projection device, and the user may send a correction instruction to the projection device by pressing the correction button. Afterwards, the projection device can send corresponding prompt information to the user to prompt the user to adjust the position of the image capture device to a suitable position, so that the image capture device can accurately capture the projected image of the projection device on the imaging medium, so as to more accurately capture the image. Correct the projected image.
具体的,当图像采集装置为与投影设备相分离的、可移动的摄像头模块时,投影设备在接收到校正指令后,可以先在成像媒介上投影出一张提示图像,以提示用户向指定位置移动摄像头模块。例如,摄像头模块可以对提示图像进行拍摄,并将拍摄提示图像所得到的图像发送至投影设备,由投影设备判断摄像头模块拍摄提示图像所得到的图像和提示图像是否满足预设调整条件。若满足预设调整条件,投影设备可以确定用户已经将摄像头模块调整到了合适的位置。否则,投影设备可以确定用户未将摄像头模块调整到合适的位置,投影设备需要再次投影出一张新的提示图像,以提示用户继续调整摄像头模块。其中,预设调整条件例如可以是摄像头模块拍摄提示图像所得到的图像包含提示图像,且提示图像占摄像头模块拍摄提示图像所得到的图像的比例大于或等于阈值(例如:50%)。在将摄像头模块调整到了合适的位置后,投影设备可以将包括多个第一标记图案的校正图像投影至成像媒介上,以得到成像媒介上展示的投影校正图像,再通过摄像头模块对投影校正图像进行拍摄,并将拍摄投影校正图像所得到的图像发送至投影设备。由投影设备对拍摄投影校正图像所得到的图像进行预处理(预处理例如可以是:图像格式转换、分割处理和图像尺寸转换等),来得到采集图像。其中,采集图像包括与每个第一标记图案对应的第二标记图案。Specifically, when the image acquisition device is a movable camera module separated from the projection device, after receiving the correction instruction, the projection device can first project a prompt image on the imaging medium to prompt the user to move to the designated location Mobile camera module. For example, the camera module can shoot the prompt image, and send the image obtained by shooting the prompt image to the projection device, and the projection device determines whether the image obtained by the camera module shooting the prompt image and the prompt image meet the preset adjustment conditions. If the preset adjustment conditions are met, the projection device may determine that the user has adjusted the camera module to an appropriate position. Otherwise, the projection device may determine that the user has not adjusted the camera module to a proper position, and the projection device needs to project a new prompt image again to prompt the user to continue adjusting the camera module. The preset adjustment condition may be, for example, that the image obtained by the camera module shooting the prompt image includes the prompt image, and the proportion of the prompt image to the image obtained by the camera module shooting the prompt image is greater than or equal to a threshold (eg 50%). After the camera module is adjusted to an appropriate position, the projection device can project the corrected image including a plurality of first marking patterns onto the imaging medium to obtain the projected corrected image displayed on the imaging medium, and then the projected corrected image is displayed by the camera module. Shooting is performed, and the image obtained by shooting the projection-corrected image is sent to the projection device. The image obtained by shooting the projection correction image is preprocessed by the projection device (for example, the preprocessing may be: image format conversion, segmentation processing, image size conversion, etc.) to obtain the captured image. Wherein, the captured image includes a second marking pattern corresponding to each first marking pattern.
当图像采集装置为具备拍摄功能的手机时,投影设备在接收到校正指令后,可以先在成像媒介上投影出一张提示图像,以提示用户使用手机,来将手机与投影设备配对。在配对成功后,投影设备可以将校正图像投影至成像媒介上,以得到投影校正图像,再提示用户将手机的拍照界面与投影校正图像对齐,并提示用户使用手机拍摄投影校正图像。之后投影设备可以获取手机拍摄投影校正图像所得到的图像,并对拍摄投影校正图像所得到的图像进行预处理,以得到采集图像。进一步的,为了降低投影设备所需处理的数据量,还可以由手机来对拍摄投影校正图像所得到的图像进行预处理,以得到采集图像,并将得到的采集图像发送给投影设备。When the image acquisition device is a mobile phone with a shooting function, after receiving the correction instruction, the projection device can first project a prompt image on the imaging medium to prompt the user to use the mobile phone to pair the mobile phone with the projection device. After successful pairing, the projection device can project the corrected image onto the imaging medium to obtain the projected corrected image, and then prompts the user to align the camera interface of the mobile phone with the projected corrected image, and prompts the user to use the mobile phone to shoot the projected corrected image. Afterwards, the projection device can acquire the image obtained by shooting the projection correction image by the mobile phone, and preprocess the image obtained by shooting the projection correction image to obtain the captured image. Further, in order to reduce the amount of data that the projection device needs to process, the mobile phone can also preprocess the image obtained by shooting the projection correction image to obtain the captured image, and send the obtained captured image to the projection device.
其中,校正图像可以是任一种包括多个第一标记图案的图像。如图2中的a所示,当校正图像为棋盘格图像时,第一标记图案可以为棋盘格中的任 一方格,投影设备将校正图像投影至成像媒介上,实际上是将棋盘格投影至成像媒介上。此时图像采集装置拍摄投影校正图像所得到的图像也包括棋盘格,那么对拍摄投影校正图像所得到的图像进行预处理后得到的采集图像也包括棋盘格(即采集图像也为棋盘格图像),则第二标记图案可以为棋盘格中的任一方格。再例如,如图2中的b所示,当校正图像为包括多个圆的图像时,第一标记图案可以为多个圆中的任一个圆,此时拍摄投影校正图像所得到的图像也会包括多个圆,那么对拍摄投影校正图像所得到的图像进行预处理后得到的采集图像也包括多个圆(即采集图像也为包括多个圆的图像),则第二标记图案可以为多个圆中的任一个圆。The corrected image may be any image including a plurality of first marking patterns. As shown in a in Figure 2, when the corrected image is a checkerboard image, the first marking pattern can be any square in the checkerboard, and the projection device projects the corrected image onto the imaging medium, actually projecting the checkerboard onto the imaging medium. At this time, the image obtained by the image acquisition device shooting the projection-corrected image also includes the checkerboard, then the captured image obtained by preprocessing the image obtained by shooting the projection-corrected image also includes the checkerboard (that is, the captured image is also a checkerboard image) , the second mark pattern can be any square in the checkerboard. For another example, as shown in b in FIG. 2 , when the corrected image is an image including multiple circles, the first marking pattern can be any one of the multiple circles, and the image obtained by shooting the projected corrected image is also will include multiple circles, then the captured image obtained by preprocessing the image obtained by shooting the projection correction image also includes multiple circles (that is, the captured image is also an image including multiple circles), then the second mark pattern can be Any of multiple circles.
步骤102,确定采集图像中的每个第二标记图案的第一位置信息。Step 102: Determine the first position information of each second mark pattern in the captured image.
在本步骤中,投影设备可以对采集图像中的每个第二标记图案进行检测,并确定检测出的每个第二标记图案的第一位置信息。以校正图像为棋盘格图像,第一标记图案为棋盘格中的任一方格为例,投影设备可以对采集图像中的棋盘格进行检测,并确定采集图像中的棋盘格包括的每个方格的位置信息,例如,可以将每个方格的四个角点的坐标作为该方格的位置信息。之后投影设备可以将采集图像中的棋盘格包括的每个方格的位置信息,作为第一位置信息。In this step, the projection device may detect each second marker pattern in the captured image, and determine the first position information of each detected second marker pattern. Taking the corrected image as a checkerboard image and the first marking pattern as any square in the checkerboard as an example, the projection device can detect the checkerboard in the captured image, and determine each square included in the checkerboard in the captured image For example, the coordinates of the four corners of each square can be used as the location information of the square. Afterwards, the projection device may use the position information of each square included in the checkerboard in the captured image as the first position information.
步骤103,根据每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,确定投影校正图像在采集图像中形成的第一边界。 Step 103 , according to the first position information of each second mark pattern and the second position information of each first mark pattern, determine a first boundary formed by the projection correction image in the captured image.
举例来说,投影设备中可以预先存储有校正图像的先验信息,该先验信息可以包括校正图像的边界的位置信息和校正图像中每个第一标记图案的第二位置信息。例如,当校正图像为棋盘格图像时,可以将校正图像中的棋盘格包括的每个方格(即第一标记图案)的四个角点的坐标作为该方格的第二位置信息。之后投影设备可以根据每个第一标记图案的第二位置信息,确定每个第一标记图案与校正图像的边界的位置关系。由于采集图像为根据图像采集装置拍摄投影校正图像所得到的图像确定的,而投影校正图像又是由校正图像投影得到的。因此,每个第二标记图案与投影校正图像在采集图像中形成的第一边界的位置关系,和每个第一标记图案与校正图像的边界的位置关系相同。那么投影设备可以根据每个第一标记图案与校正图像的边界的位置关系,确定投影校正图像在采集图像中形成的第一边界。For example, prior information of the corrected image may be pre-stored in the projection device, and the prior information may include position information of the boundary of the corrected image and second position information of each first marker pattern in the corrected image. For example, when the corrected image is a checkerboard image, the coordinates of the four corners of each square (ie, the first marking pattern) included in the checkerboard in the corrected image may be used as the second position information of the square. Then, the projection device may determine the positional relationship between each first marking pattern and the boundary of the corrected image according to the second position information of each first marking pattern. Since the collected image is determined according to the image obtained by shooting the projected corrected image by the image collecting device, and the projected corrected image is obtained by projecting the corrected image. Therefore, the positional relationship between each second marker pattern and the first boundary formed by the projected corrected image in the captured image is the same as the positional relationship between each first marker pattern and the boundary of the corrected image. Then, the projection device can determine the first boundary formed by the projected corrected image in the captured image according to the positional relationship between each first marking pattern and the boundary of the corrected image.
步骤104,根据第一边界,确定在成像媒介上的目标投影区域。Step 104: Determine the target projection area on the imaging medium according to the first boundary.
进一步的,投影设备在确定第一边界后,首先可以计算图像采集装置的成像平面与成像媒介所处的投影平面之间的单应性矩阵,例如,当投影设备的投影光机的主光轴与成像媒介的法向量相平行时,可以将投影平面与投影光机的投射平面当做同一个平面。因此,可以利用每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,来计算成像平面与投影平面之间的单应性矩阵,通过第一位置信息和第二位置信息计算成像平面与投影平面之间的单应性矩阵可以参考相关技术中描述的方式,此处不再赘述。之后投影设备可以通过该单应性矩阵,将第一边界映射在投影平面上,以得到第一边界在成像媒介上对应的边界。然后,投影设备可以从第一边界在成像媒介上对应的边界所围成的区域中,确定一个满足预设形状条件的目标投影区域。其中,预设形状条件例如可以是将第一边界在成像媒介上对应的边界所围成的区域中最大的、尺寸为16:9的矩形区域,作为目标投影区域。Further, after determining the first boundary, the projection device can first calculate the homography matrix between the imaging plane of the image acquisition device and the projection plane where the imaging medium is located, for example, when the main optical axis of the projector of the projection device is When parallel to the normal vector of the imaging medium, the projection plane and the projection plane of the light projector can be regarded as the same plane. Therefore, the homography matrix between the imaging plane and the projection plane can be calculated by using the first position information of each second marking pattern and the second position information of each first marking pattern, and by using the first position information and the second position information For calculating the homography matrix between the imaging plane and the projection plane with the two position information, reference may be made to the method described in the related art, and details are not repeated here. Afterwards, the projection device can map the first boundary on the projection plane through the homography matrix, so as to obtain the boundary corresponding to the first boundary on the imaging medium. Then, the projection device may determine a target projection area that satisfies the preset shape condition from the area enclosed by the boundary corresponding to the first boundary on the imaging medium. The preset shape condition may be, for example, the largest rectangular area with a size of 16:9 in the area enclosed by the boundary corresponding to the first boundary on the imaging medium, as the target projection area.
步骤105,按照目标投影区域将待投影图像投影至成像媒介上,以在目标投影区域内展示待投影图像包括的信息。Step 105: Project the to-be-projected image onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area.
示例地,投影设备在确定目标投影区域之后,可以先确定目标投影区域对应的校正点的第三位置信息,例如,可以将每个校正点对应的坐标作为第三位置信息。其中,校正点包括目标投影区域的角点,以及目标投影区域的每条边的中点,即校正点包括4个校正角点和4个校正中点。然后投影设备可以按照第三位置信息,将待投影图像投影至成像媒介上,以在目标投影区域内展示待投影图像包括的信息,即在目标投影区域内展示待投影图像对应的投影图像。具体的,投影设备可以根据这8个校正点的坐标,对待投影图像进行处理,以使投影设备在将待投影图像投影至成像媒介上时,待投影图像对应的投影图像不再发生畸变。例如,若之前投影图像发生了桶形畸变,可以以4个校正角点为固定点,将待投影图像向4个校正中点回拉。若之前投影图像发生了枕形畸变,可以以4个校正中点为固定点,将待投影图像向4个校正角点回拉。For example, after determining the target projection area, the projection device may first determine the third position information of the correction point corresponding to the target projection area, for example, the coordinates corresponding to each correction point may be used as the third position information. The correction point includes the corner points of the target projection area and the midpoint of each side of the target projection area, that is, the correction point includes 4 correction corner points and 4 correction midpoints. Then, the projection device can project the to-be-projected image onto the imaging medium according to the third position information to display the information included in the to-be-projected image in the target projection area, that is, to display the projection image corresponding to the to-be-projected image in the target projection area. Specifically, the projection device can process the to-be-projected image according to the coordinates of the eight correction points, so that when the projection device projects the to-be-projected image onto the imaging medium, the projection image corresponding to the to-be-projected image is no longer distorted. For example, if barrel distortion occurs in the previous projected image, the four correction corner points can be used as fixed points, and the to-be-projected image can be pulled back to the four correction midpoints. If pincushion distortion occurs in the previous projection image, the four correction midpoints can be used as fixed points, and the to-be-projected image can be pulled back to the four correction corner points.
需要说明的是,若在校正完成后,待投影图像对应的投影图像仍然发生畸变,可以重复执行步骤101至步骤105,直至待投影图像对应的投影图像不再发生畸变。It should be noted that if the projection image corresponding to the to-be-projected image is still distorted after the correction is completed, steps 101 to 105 may be repeated until the projection image corresponding to the to-be-projected image is no longer distorted.
图3是图1所示实施例示出的一种步骤101的流程图。如图3所示,步骤101可以包括以下步骤:FIG. 3 is a flowchart of step 101 shown in the embodiment shown in FIG. 1 . As shown in FIG. 3, step 101 may include the following steps:
步骤1011,将图像采集装置拍摄投影校正图像所得到的图像转换为指定格式,以得到第一图像。Step 1011: Convert the image obtained by the image acquisition device to shoot the projection corrected image into a specified format to obtain a first image.
步骤1012,对第一图像进行分割处理,以去除第一图像中除投影校正图像外的区域,得到第二图像。 Step 1012 , perform segmentation processing on the first image to remove the area of the first image except the projection corrected image to obtain a second image.
步骤1013,将第二图像转换为指定图像尺寸,以得到采集图像。Step 1013: Convert the second image to a specified image size to obtain a captured image.
举例来说,投影设备在接收到图像采集装置发送的拍摄投影校正图像所得到的图像后,需要对拍摄投影校正图像所得到的图像进行预处理,以得到规范的采集图像,以便后续对投影图像进行校正。具体的,首先可以将拍摄投影校正图像所得到的图像转换为指定格式,以得到第一图像,指定格式例如可以是BMP(英文:Bitmap,中文:位图文件)图形文件格式。在拍摄投影校正图像所得到的图像中,可能还会包括除投影校正图像外的其他区域,如果直接采用第一图像来对投影图像进行校正,会增大后续处理过程中的噪声和数据量。为了降低后续处理过程中的噪声和数据量,投影设备可以对第一图像进行分割处理(例如:可以采用粗粒度分割的方式),以去除第一图像中除投影校正图像外的区域,得到第二图像。然后,投影设备可以将第二图像转换为指定图像尺寸(例如:720P),并将经过转换后的第二图像作为采集图像。进一步的,投影设备还可以对得到的采集图像进行直方图均衡处理,并调整采集图像的白平衡和曝光时长,以提高采集图像的质量。For example, after receiving the image obtained by shooting the projection correction image sent by the image acquisition device, the projection device needs to preprocess the image obtained by shooting the projection correction image, so as to obtain a standardized acquisition image, so that the projection image can be subsequently processed. Make corrections. Specifically, the image obtained by shooting the projection correction image may be converted into a specified format to obtain the first image, and the specified format may be, for example, a BMP (English: Bitmap, Chinese: Bitmap File) graphic file format. The image obtained by shooting the projection-corrected image may also include other regions than the projection-corrected image. If the first image is directly used to correct the projection image, noise and data volume in subsequent processing will be increased. In order to reduce the noise and data volume in the subsequent processing, the projection device may perform segmentation processing on the first image (for example, a coarse-grained segmentation method may be used) to remove the area of the first image except the projection corrected image, and obtain the first image. Second image. Then, the projection device may convert the second image into a specified image size (for example: 720P), and use the converted second image as a captured image. Further, the projection device can also perform histogram equalization processing on the acquired image, and adjust the white balance and exposure time of the acquired image, so as to improve the quality of the acquired image.
需要说明的是,对第一图像进行分割处理后得到的第二图像中,仍然可能包含除投影校正图像外的其他区域。也就是说,对拍摄投影校正图像所得到的图像进行预处理实际上是一种粗粒度的处理方式,所得到的采集图像中并不只包含投影校正图像。It should be noted that, the second image obtained after the first image is segmented may still contain other regions than the projection corrected image. That is to say, preprocessing the image obtained by shooting the projection correction image is actually a coarse-grained processing method, and the acquired captured image does not only contain the projection correction image.
图4是图1所示实施例示出的一种步骤103的流程图。如图4所示,步骤103可以包括以下步骤:FIG. 4 is a flowchart of step 103 shown in the embodiment shown in FIG. 1 . As shown in FIG. 4, step 103 may include the following steps:
步骤1031,根据每个第二位置信息,确定每个第一标记图案与校正图像的第二边界之间的位置关系,位置关系用于表征该第一标记图案与第二边界的距离。Step 1031: Determine the positional relationship between each first marking pattern and the second boundary of the corrected image according to each second positional information, where the positional relationship is used to represent the distance between the first marking pattern and the second boundary.
步骤1032,根据位置关系和每个第一位置信息,确定投影校正图像在采 集图像中对应的第一区域。 Step 1032, according to the positional relationship and each first positional information, determine the first region corresponding to the projection correction image in the captured image.
示例地,投影设备可以根据校正图像的先验信息中校正图像的第二边界的位置信息和每个第一标记图案的第二位置信息,计算每个第一标记图案与第二边界的距离,以得到该第一标记图案与第二边界之间的位置关系。然后投影设备可以根据每个第一标记图案与第二边界的位置关系,利用校正图像的像素与采集图像的像素之间的比例关系,确定该第一标记图案对应的第二标记图案与待定边界的位置关系。之后投影设备可以利用每个第二标记图案与待定边界的位置关系,确定投影校正图像在采集图像中对应的待定边界。再将待定边界向外扩大指定像素距离(例如:20个像素),并将向外扩大后的待定边界围成的区域作为第一区域。其中,待定边界可以理解为预先假定的第一边界,第一区域可以理解为投影校正图像在采集图像中的大致范围。Illustratively, the projection device may calculate the distance between each first marking pattern and the second boundary according to the position information of the second boundary of the corrected image and the second position information of each first marking pattern in the prior information of the corrected image, to obtain the positional relationship between the first marking pattern and the second boundary. Then, according to the positional relationship between each first marking pattern and the second boundary, the projection device can use the proportional relationship between the pixels of the corrected image and the pixels of the captured image to determine the second marking pattern corresponding to the first marking pattern and the undetermined boundary positional relationship. Afterwards, the projection device can use the positional relationship between each second marking pattern and the pending boundary to determine the pending boundary corresponding to the projection correction image in the captured image. Then, the undetermined boundary is expanded outward by a specified pixel distance (for example: 20 pixels), and the area enclosed by the outwardly expanded undetermined boundary is used as the first area. Wherein, the undetermined boundary can be understood as a pre-assumed first boundary, and the first area can be understood as the approximate range of the projected corrected image in the captured image.
步骤1033,根据第一区域的颜色特征,从第一区域中确定第二区域。Step 1033: Determine the second area from the first area according to the color feature of the first area.
步骤1034,对第二区域进行边缘识别,以得到第一边界。Step 1034: Perform edge recognition on the second area to obtain the first boundary.
进一步的,投影设备可以提取第一区域的颜色特征,并根据第一区域的颜色特征,结合校正图像的先验信息中第二边界与周围区域的颜色特征差异,从第一区域中搜索出该颜色特征差异相同的区域,作为第二区域。然后,投影设备可以对第二区域进行边缘识别,以识别出第二区域所对应的边界,并将该边界作为第一边界。其中,对第二区域进行边缘识别来得到第一边界可以参考相关技术中描述的方式,此处不再赘述。需要说明的是,得到第一边界的过程实际上是一种细粒度的处理方式,以进一步去除采集图像中除投影校正图像外的其他区域。Further, the projection device can extract the color feature of the first area, and according to the color feature of the first area, combined with the color feature difference between the second boundary and the surrounding area in the prior information of the corrected image, search for the color feature from the first area. The area with the same difference in color characteristics is used as the second area. Then, the projection device may perform edge recognition on the second area to recognize the boundary corresponding to the second area, and use the boundary as the first boundary. Wherein, to obtain the first boundary by performing edge recognition on the second region, reference may be made to the manner described in the related art, which will not be repeated here. It should be noted that the process of obtaining the first boundary is actually a fine-grained processing manner to further remove other regions in the captured image except the projection corrected image.
图5是图1所示实施例示出的一种步骤104的流程图。如图5所示,步骤104可以包括以下步骤:FIG. 5 is a flowchart of step 104 shown in the embodiment shown in FIG. 1 . As shown in FIG. 5, step 104 may include the following steps:
步骤1041,根据第一位置信息和第二位置信息,确定变换矩阵。Step 1041: Determine a transformation matrix according to the first position information and the second position information.
步骤1042,根据变换矩阵,确定第一边界在成像媒介上对应的第三边界。Step 1042: Determine a third boundary corresponding to the first boundary on the imaging medium according to the transformation matrix.
示例地,投影设备在确定第一边界后,首先可以根据每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,来计算成像平面与投影平面之间的变换矩阵(例如:单应性矩阵)。之后投影设备可以利用变换矩阵,将第一边界映射在投影平面上,以得到第一边界在成像媒介上对应的第三边界。For example, after determining the first boundary, the projection device may first calculate the transformation between the imaging plane and the projection plane according to the first position information of each second marker pattern and the second position information of each first marker pattern. A matrix (eg: a homography matrix). Afterwards, the projection device can use the transformation matrix to map the first boundary on the projection plane, so as to obtain a third boundary corresponding to the first boundary on the imaging medium.
步骤1043,根据第三边界确定目标投影区域。Step 1043: Determine the target projection area according to the third boundary.
进一步的,投影设备可以将第三边界围成的区域作为待校正区域,并从待校正区域中确定满足预设形状条件的区域,作为目标投影区域。例如,投影设备可以根据待校正区域中每个像素的位置信息,确定每个像素到第二边界中指定边界(例如:第二边界中每个像素的下方和右方的边界)的像素距离。然后,投影设备可以根据每个像素到指定边界的像素距离,利用预设的遍历搜索算法进行遍历搜索,并计算待校正区域中满足预设形状条件的目标投影区域。其中,预设形状条件例如可以是将待校正区域中最大的、尺寸为16:9的矩形区域,作为目标投影区域。Further, the projection device may take the area enclosed by the third boundary as the area to be corrected, and determine the area that satisfies the preset shape condition from the area to be corrected as the target projection area. For example, the projection device may determine the pixel distance of each pixel to a specified boundary in the second boundary (eg, the boundary below and to the right of each pixel in the second boundary) according to the position information of each pixel in the area to be corrected. Then, the projection device can use a preset traversal search algorithm to perform a traversal search according to the pixel distance from each pixel to the specified boundary, and calculate the target projection area in the area to be corrected that satisfies the preset shape condition. The preset shape condition may be, for example, the largest rectangular area with a size of 16:9 in the area to be corrected as the target projection area.
综上所述,本公开首先通过将预设的校正图像投影至成像媒介上,以得到成像媒介上展示的投影校正图像,并获取采集图像,其中,采集图像为根据图像采集装置拍摄投影校正图像所得到的图像确定的,校正图像包括多个第一标记图案,采集图像包括与每个第一标记图案对应的第二标记图案,之后确定采集图像中的每个第二标记图案的第一位置信息,并根据每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,确定投影校正图像在采集图像中形成的第一边界,再根据第一边界,确定在成像媒介上的目标投影区域,然后按照目标投影区域将待投影图像投影至成像媒介上,以在目标投影区域内展示待投影图像包括的信息。本公开通过确定投影校正图像中未发生畸变的目标投影区域,并按照目标投影区域将待投影图像投影至成像媒介上,可以确保将待投影图像投影至成像媒介上时不会发生畸变,能够获得满足用户要求的投影效果,无需用户手动调节,操作简单,对投影进行校正的效率高。To sum up, the present disclosure first obtains a projected corrected image displayed on the imaging medium by projecting a preset corrected image onto an imaging medium, and acquires a captured image, wherein the captured image is a projected corrected image captured by an image capturing device The obtained image is determined, the corrected image includes a plurality of first marking patterns, the acquired image includes a second marking pattern corresponding to each first marking pattern, and then the first position of each second marking pattern in the acquired image is determined information, and according to the first position information of each second mark pattern and the second position information of each first mark pattern, determine the first boundary formed by the projection correction image in the captured image, and then according to the first boundary, determine the The target projection area on the imaging medium, and then the to-be-projected image is projected onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area. In the present disclosure, by determining a target projection area without distortion in the projection correction image, and projecting the to-be-projected image onto the imaging medium according to the target projection area, it can ensure that the to-be-projected image will not be distorted when projecting the to-be-projected image onto the imaging medium, and can obtain The projection effect that meets the user's requirements does not require manual adjustment by the user, the operation is simple, and the efficiency of correcting the projection is high.
图6是根据一示例性实施例示出的一种投影校正装置的框图。如图6所示,应用于投影设备,装置200包括:Fig. 6 is a block diagram of a projection correction apparatus according to an exemplary embodiment. As shown in FIG. 6, applied to projection equipment, the apparatus 200 includes:
获取模块201,用于将预设的校正图像投影至成像媒介上,以得到成像媒介上展示的投影校正图像,并获取采集图像。采集图像为根据图像采集装置拍摄投影校正图像所得到的图像确定的,校正图像包括多个第一标记图案,采集图像包括与每个第一标记图案对应的第二标记图案。The acquiring module 201 is configured to project a preset corrected image onto an imaging medium to obtain a projected corrected image displayed on the imaging medium, and acquire a captured image. The collected image is determined according to an image obtained by photographing the projected corrected image by the image collecting device, the corrected image includes a plurality of first mark patterns, and the collected image includes a second mark pattern corresponding to each of the first mark patterns.
处理模块202,用于确定采集图像中的每个第二标记图案的第一位置信息。The processing module 202 is configured to determine the first position information of each second mark pattern in the captured image.
处理模块202,还用于根据每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,确定投影校正图像在采集图像中形成的第一边界。The processing module 202 is further configured to determine, according to the first position information of each second mark pattern and the second position information of each first mark pattern, a first boundary formed by the projection correction image in the captured image.
处理模块202,还用于根据第一边界,确定在成像媒介上的目标投影区域。The processing module 202 is further configured to determine the target projection area on the imaging medium according to the first boundary.
校正模块203,用于按照目标投影区域将待投影图像投影至成像媒介上,以在目标投影区域内展示待投影图像包括的信息。The correction module 203 is configured to project the to-be-projected image onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area.
可选地,获取模块201包括:Optionally, the obtaining module 201 includes:
第一转换子模块,用于将图像采集装置拍摄投影校正图像所得到的图像转换为指定格式,以得到第一图像。The first conversion sub-module is used to convert the image obtained by the image acquisition device shooting the projection corrected image into a specified format to obtain the first image.
分割子模块,用于对第一图像进行分割处理,以去除第一图像中除投影校正图像外的区域,得到第二图像。The segmentation sub-module is used to perform segmentation processing on the first image, so as to remove the area in the first image except the projection corrected image to obtain the second image.
第二转换子模块,用于将第二图像转换为指定图像尺寸,以得到采集图像。The second conversion submodule is used to convert the second image into a specified image size to obtain the captured image.
可选地,校正图像为棋盘格图像,第一标记图案为棋盘格中的任一方格,处理模块202包括:Optionally, the corrected image is a checkerboard image, the first marking pattern is any square in the checkerboard, and the processing module 202 includes:
检测子模块,用于对采集图像中的棋盘格进行检测,并确定采集图像中的棋盘格包括的每个方格的位置信息。The detection submodule is used to detect the checkerboard in the collected image, and determine the position information of each square included in the checkerboard in the collected image.
第一确定子模块,用于将采集图像中的棋盘格包括的每个方格的位置信息,作为第一位置信息。The first determination submodule is configured to use the position information of each square included in the checkerboard in the collected image as the first position information.
可选地,处理模块202包括:Optionally, the processing module 202 includes:
第二确定子模块,用于根据每个第二位置信息,确定每个第一标记图案与校正图像的第二边界之间的位置关系,位置关系用于表征该第一标记图案与第二边界的距离。The second determination sub-module is configured to determine the positional relationship between each first marking pattern and the second boundary of the corrected image according to each second positional information, where the positional relationship is used to characterize the first marking pattern and the second boundary the distance.
第二确定子模块,还用于根据位置关系和每个第一位置信息,确定投影校正图像在采集图像中对应的第一区域。The second determination submodule is further configured to determine, according to the positional relationship and each first positional information, the first region corresponding to the projection correction image in the captured image.
第二确定子模块,还用于根据第一区域的颜色特征,从第一区域中确定第二区域。The second determination submodule is further configured to determine the second area from the first area according to the color feature of the first area.
识别子模块,用于对第二区域进行边缘识别,以得到第一边界。The identification sub-module is used for performing edge identification on the second area to obtain the first boundary.
可选地,处理模块202包括:Optionally, the processing module 202 includes:
计算子模块,用于根据第一位置信息和第二位置信息,确定变换矩阵。The calculation submodule is configured to determine the transformation matrix according to the first position information and the second position information.
第三确定子模块,用于根据变换矩阵,确定第一边界在成像媒介上对应的第三边界。The third determination submodule is configured to determine, according to the transformation matrix, a third boundary corresponding to the first boundary on the imaging medium.
第三确定子模块,还用于根据第三边界确定目标投影区域。The third determining submodule is further configured to determine the target projection area according to the third boundary.
可选地,第三确定子模块用于:Optionally, the third determination submodule is used for:
将第三边界围成的区域作为待校正区域。The area enclosed by the third boundary is used as the area to be corrected.
从待校正区域中确定满足预设形状条件的区域,作为目标投影区域。Determine the area that meets the preset shape condition from the area to be corrected as the target projection area.
可选地,校正模块203包括:Optionally, the correction module 203 includes:
第四确定子模块,用于确定目标投影区域对应的校正点的第三位置信息。校正点包括目标投影区域的角点,以及目标投影区域的每条边的中点。The fourth determination sub-module is used for determining the third position information of the correction point corresponding to the target projection area. The correction points include the corners of the target projection area and the midpoints of each side of the target projection area.
校正子模块,按照第三位置信息,将待投影图像投影至成像媒介上。The correction sub-module projects the to-be-projected image onto the imaging medium according to the third position information.
关于上述实施例中的装置,其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述,此处将不做详细阐述说明。Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.
综上所述,本公开首先通过将预设的校正图像投影至成像媒介上,以得到成像媒介上展示的投影校正图像,并获取采集图像,其中,采集图像为根据图像采集装置拍摄投影校正图像所得到的图像确定的,校正图像包括多个第一标记图案,采集图像包括与每个第一标记图案对应的第二标记图案,之后确定采集图像中的每个第二标记图案的第一位置信息,并根据每个第二标记图案的第一位置信息和每个第一标记图案的第二位置信息,确定投影校正图像在采集图像中形成的第一边界,再根据第一边界,确定在成像媒介上的目标投影区域,然后按照目标投影区域将待投影图像投影至成像媒介上,以在目标投影区域内展示待投影图像包括的信息。本公开通过确定投影校正图像中未发生畸变的目标投影区域,并按照目标投影区域将待投影图像投影至成像媒介上,可以确保将待投影图像投影至成像媒介上时不会发生畸变,能够获得满足用户要求的投影效果,无需用户手动调节,操作简单,对投影进行校正的效率高。To sum up, the present disclosure first obtains a projected corrected image displayed on the imaging medium by projecting a preset corrected image onto an imaging medium, and acquires a captured image, wherein the captured image is a projected corrected image captured by an image capturing device The obtained image is determined, the corrected image includes a plurality of first marking patterns, the acquired image includes a second marking pattern corresponding to each first marking pattern, and then the first position of each second marking pattern in the acquired image is determined information, and according to the first position information of each second mark pattern and the second position information of each first mark pattern, determine the first boundary formed by the projection correction image in the captured image, and then according to the first boundary, determine the The target projection area on the imaging medium, and then the to-be-projected image is projected onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area. In the present disclosure, by determining a target projection area without distortion in the projection correction image, and projecting the to-be-projected image onto the imaging medium according to the target projection area, it can ensure that the to-be-projected image will not be distorted when projecting the to-be-projected image onto the imaging medium, and can obtain The projection effect that meets the user's requirements does not require manual adjustment by the user, the operation is simple, and the efficiency of correcting the projection is high.
图7是根据一示例性实施例示出的一种电子设备300的框图。如图7所示,该电子设备300可以包括:处理器301,存储器302。该电子设备300还可以包括多媒体组件303,输入/输出(I/O)接口304,以及通信组件305中的一者或多者。FIG. 7 is a block diagram of an electronic device 300 according to an exemplary embodiment. As shown in FIG. 7 , the electronic device 300 may include: a processor 301 and a memory 302 . The electronic device 300 may also include one or more of a multimedia component 303 , an input/output (I/O) interface 304 , and a communication component 305 .
其中,处理器301用于控制该电子设备300的整体操作,以完成上述的投影校正方法中的全部或部分步骤。存储器302用于存储各种类型的数据以支持在该电子设备300的操作,这些数据例如可以包括用于在该电子设备300上操作的任何应用程序或方法的指令,以及应用程序相关的数据,例如联系人数据、收发的消息、图片、音频、视频等等。该存储器302可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,例如静态随机存取存储器(Static Random Access Memory,简称SRAM),电可擦除可编程只读存储器(Electrically Erasable Programmable Read-Only Memory,简称EEPROM),可擦除可编程只读存储器(Erasable Programmable Read-Only Memory,简称EPROM),可编程只读存储器(Programmable Read-Only Memory,简称PROM),只读存储器(Read-Only Memory,简称ROM),磁存储器,快闪存储器,磁盘或光盘。多媒体组件303可以包括屏幕和音频组件。其中屏幕例如可以是触摸屏,音频组件用于输出和/或输入音频信号。例如,音频组件可以包括一个麦克风,麦克风用于接收外部音频信号。所接收的音频信号可以被进一步存储在存储器302或通过通信组件305发送。音频组件还包括至少一个扬声器,用于输出音频信号。I/O接口304为处理器301和其他接口模块之间提供接口,上述其他接口模块可以是键盘,鼠标,按钮等。这些按钮可以是虚拟按钮或者实体按钮。通信组件305用于该电子设备300与其他设备之间进行有线或无线通信。无线通信,例如Wi-Fi,蓝牙,近场通信(Near Field Communication,简称NFC),2G、3G、4G、NB-IOT、eMTC、或其他5G等等,或它们中的一种或几种的组合,在此不做限定。因此相应的该通信组件305可以包括:Wi-Fi模块,蓝牙模块,NFC模块等等。Wherein, the processor 301 is used to control the overall operation of the electronic device 300 to complete all or part of the steps in the above-mentioned projection correction method. The memory 302 is used to store various types of data to support operations on the electronic device 300, such data may include, for example, instructions for any application or method operating on the electronic device 300, and application-related data, Such as contact data, messages sent and received, pictures, audio, video, and so on. The memory 302 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, SRAM for short), electrically erasable programmable read-only memory ( Electrically Erasable Programmable Read-Only Memory (EEPROM for short), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (Read-Only Memory, ROM for short), magnetic memory, flash memory, magnetic disk or optical disk. Multimedia components 303 may include screen and audio components. Wherein the screen can be, for example, a touch screen, and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in memory 302 or transmitted through communication component 305 . The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 304 provides an interface between the processor 301 and other interface modules, and the above-mentioned other interface modules may be a keyboard, a mouse, a button, and the like. These buttons can be virtual buttons or physical buttons. The communication component 305 is used for wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or one or more of them The combination is not limited here. Therefore, the corresponding communication component 305 may include: Wi-Fi module, Bluetooth module, NFC module and so on.
在一示例性实施例中,电子设备300可以被一个或多个应用专用集成电路(Application Specific Integrated Circuit,简称ASIC)、数字信号处理器(Digital Signal Processor,简称DSP)、数字信号处理设备(Digital Signal Processing Device,简称DSPD)、可编程逻辑器件(Programmable Logic Device,简称PLD)、现场可编程门阵列(Field Programmable Gate Array,简称FPGA)、控制器、微控制器、微处理器或其他电子元件实现,用于执行上述的投影校正方法。In an exemplary embodiment, the electronic device 300 may be implemented by one or more application-specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), digital signal processors (Digital Signal Processor, DSP for short), digital signal processing devices (Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor or other electronic components Implementation is used to perform the above-mentioned projection correction method.
在另一示例性实施例中,还提供了一种包括程序指令的计算机可读存储介质,该程序指令被处理器执行时实现上述的投影校正方法的步骤。例如,该计算机可读存储介质可以为上述包括程序指令的存储器302,上述程序指令可由电子设备300的处理器301执行以完成上述的投影校正方法。In another exemplary embodiment, there is also provided a computer-readable storage medium comprising program instructions, the program instructions implement the steps of the above-mentioned projection correction method when executed by a processor. For example, the computer-readable storage medium can be the above-mentioned memory 302 including program instructions, and the above-mentioned program instructions can be executed by the processor 301 of the electronic device 300 to complete the above-mentioned projection correction method.
在另一示例性实施例中,还提供一种计算机程序产品,该计算机程序产品包含能够由可编程的装置执行的计算机程序,该计算机程序具有当由该可编程的装置执行时用于执行上述的投影校正方法的代码部分。In another exemplary embodiment, there is also provided a computer program product comprising a computer program executable by a programmable apparatus, the computer program having, when executed by the programmable apparatus, for performing the above The code section of the projection correction method.
以上结合附图详细描述了本公开的优选实施方式,但是,本公开并不限于上述实施方式中的具体细节,在本公开的技术构思范围内,可以对本公开的技术方案进行多种简单变型,这些简单变型均属于本公开的保护范围。The preferred embodiments of the present disclosure have been described above in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above-mentioned embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure. These simple modifications all fall within the protection scope of the present disclosure.
另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本公开对各种可能的组合方式不再另行说明。In addition, it should be noted that the various specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner unless they are inconsistent. In order to avoid unnecessary repetition, the present disclosure provides The combination method will not be specified otherwise.
此外,本公开的各种不同的实施方式之间也可以进行任意组合,只要其不违背本公开的思想,其同样应当视为本公开所公开的内容。In addition, the various embodiments of the present disclosure can also be arbitrarily combined, as long as they do not violate the spirit of the present disclosure, they should also be regarded as the contents disclosed in the present disclosure.
Claims (10)
- 一种投影校正方法,其特征在于,应用于投影设备,所述方法包括:A projection correction method, characterized in that, applied to projection equipment, the method comprising:将预设的校正图像投影至成像媒介上,以得到所述成像媒介上展示的投影校正图像,并获取采集图像;所述采集图像为根据图像采集装置拍摄所述投影校正图像所得到的图像确定的,所述校正图像包括多个第一标记图案,所述采集图像包括与每个所述第一标记图案对应的第二标记图案;Projecting a preset corrected image onto an imaging medium to obtain a projected corrected image displayed on the imaging medium, and acquiring a captured image; the captured image is determined according to an image obtained by photographing the projected corrected image by an image acquisition device wherein the corrected image includes a plurality of first marking patterns, and the captured image includes a second marking pattern corresponding to each of the first marking patterns;确定所述采集图像中的每个所述第二标记图案的第一位置信息;determining first position information of each of the second marking patterns in the captured image;根据每个所述第二标记图案的第一位置信息和每个所述第一标记图案的第二位置信息,确定所述投影校正图像在所述采集图像中形成的第一边界;determining, according to the first position information of each of the second marking patterns and the second position information of each of the first marking patterns, a first boundary formed by the projection correction image in the captured image;根据所述第一边界,确定在所述成像媒介上的目标投影区域;determining a target projection area on the imaging medium according to the first boundary;按照所述目标投影区域将待投影图像投影至所述成像媒介上,以在所述目标投影区域内展示所述待投影图像包括的信息。The to-be-projected image is projected onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area.
- 根据权利要求1所述的方法,其特征在于,所述获取采集图像,包括:The method according to claim 1, wherein the acquiring the captured image comprises:将所述图像采集装置拍摄所述投影校正图像所得到的图像转换为指定格式,以得到第一图像;Converting the image obtained by the image acquisition device shooting the projection correction image into a specified format to obtain a first image;对所述第一图像进行分割处理,以去除所述第一图像中除所述投影校正图像外的区域,得到第二图像;Performing segmentation processing on the first image to remove the area of the first image except the projection correction image to obtain a second image;将所述第二图像转换为指定图像尺寸,以得到所述采集图像。Converting the second image to a specified image size to obtain the acquired image.
- 根据权利要求1所述的方法,其特征在于,所述校正图像为棋盘格图像,所述第一标记图案为棋盘格中的任一方格;所述确定所述采集图像中的每个所述第二标记图案的第一位置信息,包括:The method according to claim 1, wherein the corrected image is a checkerboard image, and the first mark pattern is any square in the checkerboard; the determining of each of the collected images The first position information of the second marking pattern includes:对所述采集图像中的棋盘格进行检测,并确定所述采集图像中的棋盘格 包括的每个方格的位置信息;Detecting the checkerboard in the captured image, and determining the position information of each square included in the checkerboard in the captured image;将所述采集图像中的棋盘格包括的每个方格的位置信息,作为所述第一位置信息。The position information of each square included in the checkerboard in the acquired image is used as the first position information.
- 根据权利要求1所述的方法,其特征在于,所述根据每个所述第二标记图案的第一位置信息和每个所述第一标记图案的第二位置信息,确定所述投影校正图像在所述采集图像中形成的第一边界,包括:The method according to claim 1, wherein the projection correction image is determined according to the first position information of each of the second marking patterns and the second position information of each of the first marking patterns The first boundary formed in the acquired image includes:根据每个所述第二位置信息,确定每个所述第一标记图案与所述校正图像的第二边界之间的位置关系,所述位置关系用于表征该第一标记图案与所述第二边界的距离;According to each of the second position information, a positional relationship between each of the first marking patterns and the second boundary of the corrected image is determined, and the positional relationship is used to characterize the first marking pattern and the first marking pattern. the distance between the two boundaries;根据所述位置关系和每个所述第一位置信息,确定所述投影校正图像在所述采集图像中对应的第一区域;determining, according to the positional relationship and each of the first positional information, a first region corresponding to the projection correction image in the captured image;根据所述第一区域的颜色特征,从所述第一区域中确定第二区域;determining a second area from the first area according to the color feature of the first area;对所述第二区域进行边缘识别,以得到所述第一边界。Perform edge recognition on the second area to obtain the first boundary.
- 根据权利要求1所述的方法,其特征在于,所述根据所述第一边界,确定在所述成像媒介上的目标投影区域,包括:The method according to claim 1, wherein the determining a target projection area on the imaging medium according to the first boundary comprises:根据所述第一位置信息和所述第二位置信息,确定变换矩阵;determining a transformation matrix according to the first position information and the second position information;根据所述变换矩阵,确定所述第一边界在所述成像媒介上对应的第三边界;determining, according to the transformation matrix, a third boundary corresponding to the first boundary on the imaging medium;根据所述第三边界确定所述目标投影区域。The target projection area is determined according to the third boundary.
- 根据权利要求5所述的方法,其特征在于,所述根据所述第三边界确定所述目标投影区域,包括:The method according to claim 5, wherein the determining the target projection area according to the third boundary comprises:将所述第三边界围成的区域作为待校正区域;Taking the area enclosed by the third boundary as the area to be corrected;从所述待校正区域中确定满足预设形状条件的区域,作为所述目标投影区域。An area satisfying a preset shape condition is determined from the to-be-corrected area as the target projection area.
- 根据权利要求1所述的方法,其特征在于,所述按照所述目标投影区域将待投影图像投影至所述成像媒介上,包括:The method according to claim 1, wherein the projecting the to-be-projected image onto the imaging medium according to the target projection area comprises:确定所述目标投影区域对应的校正点的第三位置信息;所述校正点包括所述目标投影区域的角点,以及所述目标投影区域的每条边的中点;determining the third position information of the correction point corresponding to the target projection area; the correction point includes the corner point of the target projection area and the midpoint of each side of the target projection area;按照所述第三位置信息,将待投影图像投影至所述成像媒介上。According to the third position information, the to-be-projected image is projected onto the imaging medium.
- 一种投影校正装置,其特征在于,应用于投影设备,所述装置包括:A projection correction device, characterized in that, when applied to projection equipment, the device comprises:获取模块,用于将预设的校正图像投影至成像媒介上,以得到所述成像媒介上展示的投影校正图像,并获取采集图像;所述采集图像为根据图像采集装置拍摄所述投影校正图像所得到的图像确定的,所述校正图像包括多个第一标记图案,所述采集图像包括与每个所述第一标记图案对应的第二标记图案;an acquisition module, configured to project a preset corrected image onto an imaging medium to obtain a projected corrected image displayed on the imaging medium, and acquire a captured image; the captured image is to capture the projected corrected image according to an image capturing device It is determined from the obtained image that the corrected image includes a plurality of first mark patterns, and the captured image includes a second mark pattern corresponding to each of the first mark patterns;处理模块,用于确定所述采集图像中的每个所述第二标记图案的第一位置信息;a processing module, configured to determine the first position information of each of the second marking patterns in the captured image;所述处理模块,还用于根据每个所述第二标记图案的第一位置信息和每个所述第一标记图案的第二位置信息,确定所述投影校正图像在所述采集图像中形成的第一边界;The processing module is further configured to determine that the projection correction image is formed in the captured image according to the first position information of each of the second marking patterns and the second position information of each of the first marking patterns the first boundary of ;所述处理模块,还用于根据所述第一边界,确定在所述成像媒介上的目标投影区域;The processing module is further configured to determine a target projection area on the imaging medium according to the first boundary;校正模块,用于按照所述目标投影区域将待投影图像投影至所述成像媒介上,以在所述目标投影区域内展示所述待投影图像包括的信息。The correction module is configured to project the to-be-projected image onto the imaging medium according to the target projection area, so as to display the information included in the to-be-projected image in the target projection area.
- 一种计算机可读存储介质,其上存储有计算机程序,其特征在于,该程序被处理器执行时实现权利要求1-7中任一项所述方法的步骤。A computer-readable storage medium on which a computer program is stored, characterized in that, when the program is executed by a processor, the steps of the method according to any one of claims 1-7 are implemented.
- 一种电子设备,其特征在于,包括:An electronic device, comprising:存储器,其上存储有计算机程序;a memory on which a computer program is stored;处理器,用于执行所述存储器中的所述计算机程序,以实现权利要求1-7中任一项所述方法的步骤。A processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-7.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110206396.5 | 2021-02-24 | ||
CN202110206396.5A CN112584116B (en) | 2021-02-24 | 2021-02-24 | Projection correction method, projection correction device, storage medium and electronic equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022179108A1 true WO2022179108A1 (en) | 2022-09-01 |
Family
ID=75113955
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2021/122447 WO2022179109A1 (en) | 2021-02-24 | 2021-09-30 | Projection correction method and apparatus, storage medium and electronic device |
PCT/CN2021/122446 WO2022179108A1 (en) | 2021-02-24 | 2021-09-30 | Projection correction method and apparatus, storage medium, and electronic device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2021/122447 WO2022179109A1 (en) | 2021-02-24 | 2021-09-30 | Projection correction method and apparatus, storage medium and electronic device |
Country Status (2)
Country | Link |
---|---|
CN (3) | CN113365041B (en) |
WO (2) | WO2022179109A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113365041B (en) * | 2021-02-24 | 2022-03-22 | 深圳市火乐科技发展有限公司 | Projection correction method, projection correction device, storage medium and electronic equipment |
CN113055663B (en) * | 2021-03-31 | 2022-07-05 | 青岛海信激光显示股份有限公司 | Projection image correction method and laser projection device |
CN113271447B (en) * | 2021-05-25 | 2022-10-25 | 青岛海信激光显示股份有限公司 | Laser projection apparatus and image correction system |
CN113034574B (en) * | 2021-05-25 | 2021-09-14 | 广州市玄武无线科技股份有限公司 | Commodity ground heap area calculation method and system based on target detection |
CN113848541B (en) * | 2021-09-22 | 2022-08-26 | 深圳市镭神智能***有限公司 | Calibration method and device, unmanned aerial vehicle and computer readable storage medium |
US20230098053A1 (en) * | 2021-09-28 | 2023-03-30 | Seiko Epson Corporation | Image projection method and projector |
CN114157848B (en) * | 2021-12-01 | 2024-07-23 | 深圳市火乐科技发展有限公司 | Projection device correction method, projection device correction device, storage medium and projection device |
CN114339179B (en) * | 2021-12-23 | 2024-05-28 | 深圳市火乐科技发展有限公司 | Projection correction method, apparatus, storage medium and projection device |
CN114422763B (en) * | 2022-01-14 | 2024-02-09 | 深圳市火乐科技发展有限公司 | Screen function verification method and device, computer equipment and storage medium |
CN114760451B (en) * | 2022-04-25 | 2024-02-09 | 深圳市火乐科技发展有限公司 | Projection image correction prompting method, projection image correction prompting device, projection equipment and storage medium |
CN115086625B (en) * | 2022-05-12 | 2024-03-15 | 峰米(重庆)创新科技有限公司 | Correction method, device and system for projection picture, correction equipment and projection equipment |
CN116433476B (en) * | 2023-06-09 | 2023-09-08 | 有方(合肥)医疗科技有限公司 | CT image processing method and device |
CN117132796A (en) * | 2023-09-09 | 2023-11-28 | 廊坊市珍圭谷科技有限公司 | Position efficient matching method based on heterogeneous projection |
CN117807581B (en) * | 2024-02-29 | 2024-06-04 | 深圳市昌卓科技有限公司 | Authorized use method, system and storage medium of projector |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010096030A1 (en) * | 2009-02-18 | 2010-08-26 | Thomson Licensing | Method and apparatus for preparing subtitles for display |
CN109451290A (en) * | 2018-12-25 | 2019-03-08 | 广州励丰文化科技股份有限公司 | Auto-correction method and system based on special-shaped projected picture |
CN110300294A (en) * | 2018-03-22 | 2019-10-01 | 卡西欧计算机株式会社 | Projection control, method for controlling projection and storage medium |
CN110809141A (en) * | 2019-09-29 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Trapezoidal correction method and device, projector and storage medium |
CN111093067A (en) * | 2019-12-31 | 2020-05-01 | 歌尔股份有限公司 | Projection apparatus, lens distortion correction method, distortion correction device, and storage medium |
CN112261396A (en) * | 2020-10-26 | 2021-01-22 | 成都极米科技股份有限公司 | Projection method, projection device, projection equipment and computer readable storage medium |
CN112272292A (en) * | 2020-11-06 | 2021-01-26 | 深圳市火乐科技发展有限公司 | Projection correction method, apparatus and storage medium |
CN112584116A (en) * | 2021-02-24 | 2021-03-30 | 深圳市火乐科技发展有限公司 | Projection correction method, projection correction device, storage medium and electronic equipment |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3882929B2 (en) * | 2004-03-29 | 2007-02-21 | セイコーエプソン株式会社 | Image processing system, projector, and image processing method |
JP5187480B2 (en) * | 2007-02-23 | 2013-04-24 | セイコーエプソン株式会社 | Projector, program, information storage medium, and image generation method |
CN103019643B (en) * | 2012-12-30 | 2015-12-23 | 中国海洋大学 | A kind of large screen projection automatic calibration of plug and play and splicing display method |
JP6299124B2 (en) * | 2013-09-13 | 2018-03-28 | 株式会社リコー | Projection system, image processing apparatus, projection method, and program |
JP6636252B2 (en) * | 2015-03-19 | 2020-01-29 | 株式会社メガチップス | Projection system, projector device, imaging device, and program |
CN106162124B (en) * | 2016-08-02 | 2018-06-08 | 上海唱风信息科技有限公司 | Projector exports the calibration method of image |
KR101847996B1 (en) * | 2016-12-16 | 2018-04-12 | 씨제이씨지브이 주식회사 | Image projection method for a curved projection area and projection system therefor |
CN109104596B (en) * | 2017-06-21 | 2021-02-26 | 中强光电股份有限公司 | Projection system and correction method of display image |
JP7148855B2 (en) * | 2018-03-26 | 2022-10-06 | カシオ計算機株式会社 | PROJECTION CONTROL DEVICE, PROJECTION DEVICE, PROJECTION METHOD AND PROGRAM |
CN109873997A (en) * | 2019-04-03 | 2019-06-11 | 贵安新区新特电动汽车工业有限公司 | Projected picture correcting method and device |
CN111935465B (en) * | 2019-05-13 | 2022-06-17 | 中强光电股份有限公司 | Projection system, projection device and correction method of display image thereof |
CN110738273B (en) * | 2019-10-23 | 2023-07-21 | 成都极米科技股份有限公司 | Image feature point matching method, device, equipment and storage medium |
CN110996081B (en) * | 2019-12-06 | 2022-01-21 | 北京一数科技有限公司 | Projection picture correction method and device, electronic equipment and readable storage medium |
CN110996083A (en) * | 2019-12-19 | 2020-04-10 | 成都极米科技股份有限公司 | Trapezoidal correction method and device, electronic equipment and readable storage medium |
CN111405258B (en) * | 2020-04-30 | 2023-06-20 | 平安科技(深圳)有限公司 | Projection method, apparatus, device and computer readable storage medium |
-
2021
- 2021-02-24 CN CN202110633599.2A patent/CN113365041B/en active Active
- 2021-02-24 CN CN202110206396.5A patent/CN112584116B/en active Active
- 2021-02-24 CN CN202110633585.0A patent/CN113365040B/en active Active
- 2021-09-30 WO PCT/CN2021/122447 patent/WO2022179109A1/en unknown
- 2021-09-30 WO PCT/CN2021/122446 patent/WO2022179108A1/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010096030A1 (en) * | 2009-02-18 | 2010-08-26 | Thomson Licensing | Method and apparatus for preparing subtitles for display |
CN110300294A (en) * | 2018-03-22 | 2019-10-01 | 卡西欧计算机株式会社 | Projection control, method for controlling projection and storage medium |
CN109451290A (en) * | 2018-12-25 | 2019-03-08 | 广州励丰文化科技股份有限公司 | Auto-correction method and system based on special-shaped projected picture |
CN110809141A (en) * | 2019-09-29 | 2020-02-18 | 深圳市火乐科技发展有限公司 | Trapezoidal correction method and device, projector and storage medium |
CN111093067A (en) * | 2019-12-31 | 2020-05-01 | 歌尔股份有限公司 | Projection apparatus, lens distortion correction method, distortion correction device, and storage medium |
CN112261396A (en) * | 2020-10-26 | 2021-01-22 | 成都极米科技股份有限公司 | Projection method, projection device, projection equipment and computer readable storage medium |
CN112272292A (en) * | 2020-11-06 | 2021-01-26 | 深圳市火乐科技发展有限公司 | Projection correction method, apparatus and storage medium |
CN112584116A (en) * | 2021-02-24 | 2021-03-30 | 深圳市火乐科技发展有限公司 | Projection correction method, projection correction device, storage medium and electronic equipment |
Also Published As
Publication number | Publication date |
---|---|
CN112584116A (en) | 2021-03-30 |
WO2022179109A1 (en) | 2022-09-01 |
CN113365040B (en) | 2023-03-14 |
CN112584116B (en) | 2021-06-29 |
CN113365041B (en) | 2022-03-22 |
CN113365040A (en) | 2021-09-07 |
CN113365041A (en) | 2021-09-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022179108A1 (en) | Projection correction method and apparatus, storage medium, and electronic device | |
CN111935465B (en) | Projection system, projection device and correction method of display image thereof | |
CN112272292B (en) | Projection correction method, apparatus and storage medium | |
WO2018214365A1 (en) | Image correction method, apparatus, device, and system, camera device, and display device | |
CN108668093B (en) | HDR image generation method and device | |
KR100796849B1 (en) | Method for photographing panorama mosaics picture in mobile device | |
CN113489961B (en) | Projection correction method, projection correction device, storage medium and projection equipment | |
US9654750B2 (en) | Image processing system, image processing apparatus, and image processing method to respectively display images obtained by dividing one image on first and the second display media | |
JP5906028B2 (en) | Image processing apparatus and image processing method | |
US20130222776A1 (en) | Image projector, method of image projection, and computer-readable storage medium storing program for causing computer to execute image projection | |
US8491128B2 (en) | System and method for projection correction by capturing projection image | |
WO2022247418A1 (en) | Image correction method and photographing device | |
JP2016085637A (en) | Data processor, imaging device, and data processing method | |
CN106464799A (en) | Automatic zooming method and device | |
US20180220113A1 (en) | Projection display system, information processing apparatus, information processing method, and storage medium therefor | |
CN110874809A (en) | Image processing method and device, electronic equipment and storage medium | |
WO2017179111A1 (en) | Display system and information processing method | |
CN114339179B (en) | Projection correction method, apparatus, storage medium and projection device | |
WO2018099128A1 (en) | Method and device used in projection apparatus | |
JP2014160998A (en) | Image processing system, image processing method, image processing program and recording medium | |
WO2024080234A1 (en) | Projection device, correction device, projection system, correction method, and computer program | |
JP2017010555A (en) | Image processing method and image processing apparatus | |
CN117710261A (en) | Image processing method and device | |
JP6668646B2 (en) | Image processing apparatus, image processing method, and program | |
CN115965675A (en) | Image processing method and device, electronic device and storage medium |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21927533 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22.01.2024) |