CN111741278A - Projected image correction method - Google Patents
Projected image correction method Download PDFInfo
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- CN111741278A CN111741278A CN202010431473.2A CN202010431473A CN111741278A CN 111741278 A CN111741278 A CN 111741278A CN 202010431473 A CN202010431473 A CN 202010431473A CN 111741278 A CN111741278 A CN 111741278A
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- image
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- correction
- processor
- controller
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- 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
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- 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]
- H04N9/3141—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Projection Apparatus (AREA)
Abstract
The invention provides a projected image correction method, which comprises the following steps: the image projection module and the camera module are matched to acquire image information and send the image information to the processor; the processor receives the image information from the camera module, analyzes the image, acquires the corrected data and sends the corrected data to the controller; the controller receives the correction data from the processor and sends the correction data to the correction module; the correction module receives the correction data from the controller and corrects the image of the projector according to the correction data. According to the invention, through the cooperation of the image projection module, the camera module, the processor, the controller and the correction module, the position of the image projected by the projector is corrected, so that the user experience is better.
Description
Technical Field
The invention belongs to the technical field of projected image correction methods, and particularly relates to a projected image correction method.
Background
A projector is a device that can project content, such as images or video, onto a projection screen. And is applied to projectors in many scenarios. For example, when a meeting is opened, a projector is used for projecting text or image content related to the meeting onto a projection screen for people to watch; in another example, at home, a video is projected onto a projection screen using a projector for better visual enjoyment.
Along with the development of the internet technology, the education training is gradually changed from the traditional off-line teaching to the on-line teaching, and the limitation of the off-line teaching on space and time is overcome. The online education gradually occupies a large market share in the field of education and training due to the advantages of low space cost, flexible time control and the like. At present, online teaching usually adopts point-to-point video online education, in order to enable lessees to enjoy real interactivity of offline teaching, a camera device is used for acquiring live-action images of each student in real time, and projection equipment is used for projecting in a space where each user is located, so that the users experience interactive scenes of offline teaching in real time.
The projection equipment in the online teaching system is usually fixedly arranged when the real images of the participating students are projected to the positions adjacent to the user; or, for projection equipment used outdoors, manual debugging is required for a user, so that each group of images can be combined to display a complete offline teaching scene.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a projected image correction method, including an image projection module, a camera module, a processor, a controller, and a correction module, wherein the image projection module is connected to the camera module and the camera module is connected to the processor, the processor is connected to the controller, and the controller is connected to the correction module, the projected image correction method includes:
s1: the image projection module and the camera module are matched to acquire image information and send the image information to the processor;
s2: the processor receives the image information from the camera module, analyzes the image, acquires the corrected data and sends the corrected data to the controller;
s3: the controller receives the correction data from the processor and sends the correction data to the correction module;
s4: the correction module receives the correction data from the controller and corrects the image of the projector according to the correction data.
Preferably, the image photographing module can project a projector screen so that the camera module can photograph images.
Preferably, the camera module shoots an image while the image projection module projects the projector screen, and shoots a shadow part of the image;
preferably, the processor is capable of calculating coordinates of corners of the image from the received image information, and calculating the corrected data of the coordinates of the corners of the image from the coordinates of the corners of the image.
The invention has the beneficial effects that: through the cooperation between image projection module, camera module, treater, controller, the correction module, revise the position of the image that the projecting apparatus projected, make user's experience feel better.
Drawings
Fig. 1 is a step diagram of a projection image correction method.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is further described below:
example (b):
a projected image correction method, comprising an image projection module, a camera module, a processor, a controller, and a correction module, wherein the image projection module is connected to the camera module and the camera module is connected to the processor, the processor is connected to the controller, and the controller is connected to the correction module, as shown in fig. 1, the projected image correction method comprises:
(1) the image projection module is matched with the camera module to acquire information of an image, the image projection module is used for projecting a screen of a projector to obtain a shadow area of the image, the camera module is used for shooting at the same time, and shot image information is transmitted to the processor;
(2) the processor receives the image information from the camera module, analyzes the image, obtains the angular coordinates of the four corners of the image in the image information, calculates the angular coordinates of the four corners of the corrected image, and sends the obtained corrected angular coordinate data to the controller;
(3) the controller receives the corrected angular coordinate data from the processor and sends the corrected angular coordinate data to the correction module;
(4) the correction module receives the corrected angular coordinate data from the controller and corrects a position of an image of the projector according to the corrected angular coordinate data.
Specifically, the image projection module, the camera module, the processor, the controller and the correction module are matched to correct the position of the image projected by the projector, so that the user experience is better.
It should be noted that, in this document, moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The projected image correction method is characterized by comprising an image projection module, a camera module, a processor, a controller and a correction module, wherein the image projection module is connected with the camera module and the camera module is connected with the processor, the processor is connected with the controller, the controller is connected with the correction module, and the projected image correction method comprises the following steps:
s1: the image projection module and the camera module are matched to acquire image information and send the image information to the processor;
s2: the processor receives the image information from the camera module, analyzes the image, acquires the corrected data and sends the corrected data to the controller;
s3: the controller receives the correction data from the processor and sends the correction data to the correction module;
s4: the correction module receives the correction data from the controller and corrects the image of the projector according to the correction data.
2. The method according to claim 1, wherein the image photographing module is capable of projecting a projector screen to facilitate photographing by the photographing module.
3. The projection image correction method according to claim 2, wherein the image capturing module captures an image while the image projection module projects the projector screen, and captures a shadow portion of the image.
4. The method of claim 1, wherein the processor is capable of calculating coordinates of corners of the image based on the received image information and deriving the modified image corner coordinates based on the coordinates of the corners of the image.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431473.2A CN111741278A (en) | 2020-05-20 | 2020-05-20 | Projected image correction method |
| CN202110550608.1A CN113315958A (en) | 2020-05-20 | 2021-05-20 | Projected image correction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431473.2A CN111741278A (en) | 2020-05-20 | 2020-05-20 | Projected image correction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111741278A true CN111741278A (en) | 2020-10-02 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010431473.2A Pending CN111741278A (en) | 2020-05-20 | 2020-05-20 | Projected image correction method |
| CN202110550608.1A Pending CN113315958A (en) | 2020-05-20 | 2021-05-20 | Projected image correction method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110550608.1A Pending CN113315958A (en) | 2020-05-20 | 2021-05-20 | Projected image correction method |
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| Country | Link |
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| CN (2) | CN111741278A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104869377B (en) * | 2012-03-14 | 2016-11-02 | 海信集团有限公司 | A kind of method for correcting colors of projected image and projector |
| CN106157256A (en) * | 2015-04-22 | 2016-11-23 | Tcl集团股份有限公司 | A kind of fisheye image correcting method and correcting fisheye image device |
| CN107481207A (en) * | 2017-08-28 | 2017-12-15 | 广东暨通信息发展有限公司 | The geometric correction method and system of a kind of video image |
| CN108495101B (en) * | 2018-04-08 | 2019-10-11 | 北京大恒图像视觉有限公司 | A kind of method for correcting image, device, image capture device and readable storage medium storing program for executing |
| CN111093067B (en) * | 2019-12-31 | 2023-03-24 | 歌尔光学科技有限公司 | Projection apparatus, lens distortion correction method, distortion correction device, and storage medium |
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2020
- 2020-05-20 CN CN202010431473.2A patent/CN111741278A/en active Pending
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2021
- 2021-05-20 CN CN202110550608.1A patent/CN113315958A/en active Pending
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| CN113315958A (en) | 2021-08-27 |
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Application publication date: 20201002 |