WO2018036072A1

WO2018036072A1 - Method for projection and projection device

Info

Publication number: WO2018036072A1
Application number: PCT/CN2016/113964
Authority: WO
Inventors: 司合帅; 徐彧; 罗辉
Original assignee: 华为技术有限公司
Priority date: 2016-08-21
Filing date: 2016-12-30
Publication date: 2018-03-01
Also published as: CN108353155B; CN108353155A

Abstract

A projection device, comprising: an angle sensor for detecting a placement form (upright, inverted and flat) of the projection device to obtain placement form information related thereto; a wireless communication module for receiving original video data transmitted by a communication device; one or more processor(s) for acquiring a projection parameter corresponding to the placement form information, and processing the original video data to obtain to-be-projected video data; a projection component for emitting light, the emitted light being obtained by processing the to-be-projected video data to obtain processed to-be-projected video data and then emitting the processed to-be-projected video data using a preset light source form; a reflective mirror with a fixed position and a fixed angle, the emitted light being reflected onto the surface of an object to obtain a projection picture; a reflective mirror bracket for holding and fixing the reflective mirror, such that the position and angle of the reflective mirror are fixed relative to the projection module.

Description

一种用于投影的方法和投影设备Method and projection device for projection

本申请要求于2016年8月21日提交中国专利局、申请号为201610700354.6中国专利申请的优先权，其全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No.

技术领域Technical field

本发明涉及图像处理领域，尤指一种用于投影的方法和投影设备。The present invention relates to the field of image processing, and more particularly to a method and a projection apparatus for projection.

背景技术Background technique

投影设备在日常的生活应用中越来越广泛：如家庭影院、小型便携投影、桌面投影交互等。Projection devices are becoming more and more popular in everyday life applications such as home theater, small portable projection, desktop projection interaction, and the like.

但在各种投影场景(墙壁场景、桌面场景和天花板场景)之间进行切换时存在通过机架或机构进行多方面的调节，操作及调节复杂、可靠性差、便携性差等弊端。However, when switching between various projection scenes (wall scenes, desktop scenes, and ceiling scenes), there are various adjustments through the rack or mechanism, such as complicated operation and adjustment, poor reliability, and poor portability.

发明内容Summary of the invention

本发明实施例提供一种投影方法及投影设备，可通过对投影设备不同的摆放方式实现多种投影场景的便捷切换，以提供一种结构稳定，调节简便的投影方法和设备，以解决现有技术中存在的一种或多种问题。The embodiment of the invention provides a projection method and a projection device, which can realize convenient switching of various projection scenes by different placement methods of the projection device, so as to provide a projection method and device with stable structure and simple adjustment to solve the present problem. There are one or more problems that exist in the technology.

本发明提供的实施例包括以下任一个：Embodiments provided by the present invention include any of the following:

1、一种投影设备，所述投影设备包括投影主模块，所述投影主模块包括：A projection device, the projection device comprising a projection main module, the projection main module comprising:

能检测角度的传感器，用于检测所述投影设备的摆放形态，得到与之相关的摆放形态信息，所述投影设备的摆放形态包括以下三种：正立，倒立和平躺；The sensor capable of detecting the angle is used for detecting the placement form of the projection device, and obtaining the placement information related thereto, and the placement form of the projection device includes the following three types: erect, inverted and lying;

无线通信模块，用于接收一个通信设备发送的原始视频数据；a wireless communication module, configured to receive original video data sent by a communication device;

一个或多个处理器，与所述角度传感器和所述无线通信模块相连接，用于根据所述角度传感器检测到的所述投影设备的摆放形态信息获取与所述摆放形态信息相对应的投影参数，根据所述投影参数中的部分或全部参数，对所述无线通信模块接收到的原始视频数据进行处理得到待投影视频数据，所述投影参数包括以下参数：流明度、投影画面朝向、梯形校正相关的参数；One or more processors connected to the angle sensor and the wireless communication module, configured to acquire, according to the placement information information of the projection device detected by the angle sensor, corresponding to the placement mode information Projecting parameters, according to some or all of the parameters of the projection parameters, processing the original video data received by the wireless communication module to obtain video data to be projected, the projection parameters including the following parameters: lumens, projection screen orientation , trapezoidal correction related parameters;

投影模组，与所述一个或多个处理器相连，用于发射出发射光，所述发射光是将来自所述一个或多个处理器的所述待投影视频数据根据所述投影参数中的部分或全部参数进行处理后得到处理后的待投影视频数据，采用预设的光源形式对所述处理后的待投影视频数据进行发射得到的；a projection module coupled to the one or more processors for transmitting emitted light, the emitted light being based on the projection data from the one or more processors After the partial or all parameters are processed, the processed video data to be projected is obtained, and the processed video data to be projected is transmitted by using a preset light source form;

位置和角度固定的反射镜，所述反射镜为平面反射镜或非球面反射镜，用于根据反射原理反射来自所述所述投影模组的发射光，所述发射光被反射到一个物体表面，得到所述处理后的待投影视频数据投影在所述物体表面的投影画面；a fixed position and angle mirror, the mirror being a plane mirror or an aspheric mirror, For reflecting the emitted light from the projection module according to the reflection principle, the emitted light is reflected to an object surface, and the projected image of the processed video data to be projected projected on the surface of the object is obtained;

反射镜支架，与所述投影模组之间紧固相连，用于容纳和固定所述反射镜，使所述反射镜的位置和角度相对于投影模组固定；a mirror bracket is fastened to the projection module for receiving and fixing the mirror, so that the position and an angle of the mirror are fixed relative to the projection module;

其中，among them,

当所述投影设备的摆放形态为正立时，所述投影画面所在的物体表面为桌面或地面；When the projection device is placed in an upright position, the surface of the object on which the projection screen is located is a table top or a ground;

当所述投影设备的摆放形态为倒立时，所述投影画面所在的物体表面为天花板表面；When the projection device is placed in an inverted state, the surface of the object on which the projection screen is located is a ceiling surface;

当所述投影设备的摆放形态为平躺时，所述投影画面所在的物体表面为墙面。When the projection device is placed in a flat state, the surface of the object on which the projection screen is located is a wall surface.

反射镜的位置和角度相对于投影模组固定，使得投影角度稳定，避免反射镜位置的不稳定导致投影画面异常，以获得更稳定视觉体验更好的投影画面。The position and angle of the mirror are fixed relative to the projection module, so that the projection angle is stable, and the instability of the position of the mirror is avoided, resulting in abnormal projection images, so as to obtain a more stable visual experience and a better projection picture.

2、如1所述的投影设备，所述投影设备还包括相互套合在一起、通过伸缩结构能进行伸缩的内外两个外壳，所述投影主模块容纳在内部的外壳中，通过所述两个外壳之间的伸缩实现所述投影主模块的升降。2. The projection device of claim 1, further comprising two inner and outer outer casings that are sleeved together and telescopically extendable through the telescopic structure, the projection main module being housed in the inner casing, through the two The expansion and contraction between the outer casings enables the lifting of the projection main module.

通过实现所述投影主模块的升降，使得所述投影设备在用户不使用时可以处于较小的体积或高度，在用户使用时，又能提高所述投影设备的高度或体积以便于得到更好更大的投影画面，使得所述投影设备的便携性和投影质量均得到提升。By implementing the lifting and lowering of the projection main module, the projection device can be in a small volume or height when the user is not in use, and when the user uses it, the height or volume of the projection device can be improved to be better. The larger projection picture makes the portability and projection quality of the projection device improved.

3、如1或2所述的投影设备，所述投影设备还包括触控模组。3. The projection device of 1 or 2, wherein the projection device further comprises a touch module.

4、如3所述的投影设备，所述投影参数还包括是否开启触控功能，所述触控功能为用户对投影画面进行触控操作的功能。4. The projection device of claim 3, wherein the projection parameter further comprises: whether the touch function is enabled, and the touch function is a function of the user performing a touch operation on the projected image.

5、如1-4任一所述的投影设备所述预设的光源形式为DLP、镭射或LCoS。5. The projection device according to any one of items 1 to 4, wherein the preset light source is in the form of DLP, laser or LCoS.

可选的，如1-5任一所述的投影设备还可以在上述投影设备上端设置一个红外结构光源，以与原有的触控模组中的红外结构光源相配合，更精确地检测用户在投影画面上的触控操作。Optionally, the projection device of any one of 1-5 may further provide an infrared structure light source on the upper end of the projection device to cooperate with the infrared structure light source in the original touch module to detect the user more accurately. Touch operation on the projected screen.

6、一种用于投影的方法，所述方法包括：6. A method for projection, the method comprising:

投影设备，包括反射镜，能检测角度的传感器；Projection device, including a mirror, a sensor capable of detecting an angle;

通过所述能检测角度的传感器检测所述投影设备的摆放形态，来调整投影方式，以调整到与该便携通信设备的摆放形态相对应的投影方式，所述摆放形态包括正立，倒立和平躺；Detecting a projection mode of the projection device by the sensor capable of detecting an angle, and adjusting a projection mode to adjust a projection mode corresponding to a placement form of the portable communication device, wherein the placement form includes an erect posture. Stand upside down and lie down;

当所述投影设备的摆放形态为正立时，所述投影方式为桌面或地面投影方式；When the projection device is placed in an upright position, the projection mode is a desktop or ground projection mode;

当所述投影设备的摆放形态为倒立时，所述投影方式为天花板投影方式；When the projection device is placed upside down, the projection mode is a ceiling projection side. formula;

当所述投影设备的摆放形态为平躺时，所述投影方式为墙面投影方式。When the projection device is placed in a flat state, the projection mode is a wall projection mode.

7.如6所述的方法，所述反射镜的位置和角度固定，所述反射镜为平面反射镜或非球面反射镜。7. The method of 6, wherein the position and angle of the mirror are fixed, and the mirror is a plane mirror or an aspheric mirror.

8.如7所述的方法，所述投影设备还包括：8. The method of claim 7, the projection device further comprising:

所述反射镜用于根据反射原理反射来自所述所述投影模组的发射光，所述发射光被反射到一个物体表面，得到所述处理后的待投影视频数据投影在所述物体表面的投影画面；The mirror is configured to reflect emitted light from the projection module according to a reflection principle, and the emitted light is reflected to an object surface, and the processed video data to be projected is projected on the surface of the object. Projection picture

其中，among them,

9、如6-8任一所述的方法，所述投影设备还包括相互套合在一起、通过伸缩结构能进行伸缩的内外两个外壳，所述投影主模块容纳在内部的外壳中，通过所述两个外壳之间的伸缩实现所述投影主模块的升降。9. The method of any of 6-8, wherein the projection apparatus further comprises two inner and outer outer casings that are nested together and telescopically extendable by the telescopic structure, the projection main module being housed in the inner casing and passing through The expansion and contraction between the two outer casings enables lifting of the projection main module.

10、如8所述的方法，所述投影参数还包括是否开启触控功能，所述触控功能为用户对投影画面进行触控操作的功能。The method of claim 8, wherein the projection parameter further comprises: whether the touch function is enabled, and the touch function is a function of the user performing a touch operation on the projected image.

本发明实施例提供的投影方法及投影设备，用户只需要简单调整下投影设备的摆放形态，即可轻松实现在不同投影模式间的切换。用户可以选择多种摆放形态中的一种来摆放所述投影设备，其他的调整都由投影设备来完成，具体地，投影设备上的角度传感器通过检测所述投影设备的摆放形态，得到与之相关的摆放形态信息，所述投影设备的摆放形态包括以下三种：正立，倒立和平躺；投影设备上的无线通信模块接收一个通信设备(如手机、平板电脑等)发送的原始视频数据；投影设备上的处理器获得与所述摆放形态信息相对应的投影参数(也即，获得与所述摆放形态对应的投影模式所对应的投影参数)，根据所述投影参数中的部分或全部参数，对所述无线通信模块接收到的原始视频数据进行处理得到待投影视频数据，所述投影参数包括以下参数：流明度、投影画面朝向、梯形校正相关的参数；将所述待投影视频数据根据所述投影参数中的部分或全部参数，并采用预设的光源形式通过投影设备上的投影模组进行发射得到发射光；然后通过投影设备上的位置和角度固定的反射镜根据反射原理反射所述发射光，所述发射光被反射到一个物体表面，得到所述待投影视频数据投影在所述物体表面的投影画面；当所述投影设备的摆放形态为正立时，所述投影画面所在的物体表面为桌面或地面；当所述投影设备的摆放形态为倒立时，所述投影画面所在的物体表面为天花板表面；当所述投影设备的摆放形态为平躺时，所述投影画面所在的物体表面为墙面。投影设备根据检测到自身被摆放的不同摆放形态，即可智能地切换到不同的投影模式，采用与摆放形态对应的投影模式所对应的投影参数来进行投影，用户对投影设备不需要进行繁琐的调节，提升了投影设备的易用性，提高了用户体验。另外，通过结构固定的反射镜支架来容纳和固定所述反射镜，使得所述反射镜的位置和角度相对于投影模组固定，使得投影设备的机械或物理结构的稳定性更高，更重要的是，反射镜作为投影设备中非常重要的一个光路转换器件，其位置和角度相对于投影模组固定，使得投影角度稳定，避免反射镜位置的不稳定导致投影画面异常，以获得更稳定视觉体验更好的投影画面。According to the projection method and the projection device provided by the embodiments of the present invention, the user can easily switch between different projection modes by simply adjusting the placement mode of the projection device. The user can select one of a plurality of placement forms to place the projection device, and other adjustments are performed by the projection device. Specifically, the angle sensor on the projection device detects the placement of the projection device. Form, obtain the placement information related thereto, the projection device includes the following three types: erect, inverted and lying; the wireless communication module on the projection device receives a communication device (such as a mobile phone, a tablet computer, etc.) The original video data transmitted; the processor on the projection device obtains a projection parameter corresponding to the placement mode information (that is, obtains a projection parameter corresponding to the projection mode corresponding to the placement mode), according to Part or all of the parameters of the projection parameters, the original video data received by the wireless communication module is processed to obtain video data to be projected, and the projection parameters include the following parameters: lumens, projection screen orientation, trapezoidal correction related parameters And transmitting the to-be-projected video data according to part or all of the parameters of the projection parameter, and adopting a preset light source form to transmit light through a projection module on the projection device; and then passing the position and angle on the projection device; A fixed mirror reflects the emitted light according to a reflection principle, and the emitted light is reflected to an object a surface, a projection image of the projection data to be projected on a surface of the object; when the projection device is placed in an upright position, the surface of the object on which the projection image is located is a desktop or a ground; and when the projection device When the display form is inverted, the surface of the object on which the projection picture is located is a ceiling surface; when the projection device is placed in a flat form, the surface of the object on which the projection picture is located is a wall surface. The projection device can intelligently switch to different projection modes according to the different placement patterns in which the projection device is placed, and the projection parameters corresponding to the projection mode corresponding to the placement mode are used for projection, and the user does not need to project on the projection device. The cumbersome adjustments improve the ease of use of the projection device and improve the user experience. In addition, the mirror is fixed and fixed by a structurally fixed mirror bracket such that the position and angle of the mirror are fixed relative to the projection module, so that the mechanical or physical structure of the projection device is more stable and more important. As a very important optical path conversion device in the projection device, the position and angle of the mirror are fixed relative to the projection module, so that the projection angle is stable, and the instability of the mirror position is avoided, resulting in abnormal projection images for more stable vision. Experience a better projection picture.

附图说明DRAWINGS

为了更清楚地说明本发明实施例的技术方案，下面将对实施例中需要使用的附图作简要的介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other figures can also be obtained from the drawings by a person skilled in the art.

图1为本发明实施例一种投影方法的流程示意图；1 is a schematic flow chart of a projection method according to an embodiment of the present invention;

图2为本发明实施例一种投影方法所涉及的反梯形校正算法流程示意图；2 is a schematic flow chart of an inverse trapezoidal correction algorithm involved in a projection method according to an embodiment of the present invention;

图3为本发明实施例所涉及的一种凸型非球面反射镜示意图；3 is a schematic view of a convex aspheric mirror according to an embodiment of the present invention;

图4为本发明实施例所涉及的一种凹型非球面反射镜示意图；4 is a schematic view of a concave aspherical mirror according to an embodiment of the present invention;

图5为本发明实施例所涉及的一种固定的凸型非球面反射镜架构示意图；FIG. 5 is a schematic structural diagram of a fixed convex aspheric mirror according to an embodiment of the present invention; FIG.

图6为本发明实施例所涉及的一种固定的凹型非球面反射镜架构示意图；FIG. 6 is a schematic diagram of a fixed concave aspheric mirror structure according to an embodiment of the present invention; FIG. Figure

图7为本发明实施例所涉及的一种桌面投影模式的场景示意图；FIG. 7 is a schematic diagram of a scenario of a desktop projection mode according to an embodiment of the present invention; FIG.

图8为本发明实施例所涉及的一种墙面投影模式的场景示意图；FIG. 8 is a schematic diagram of a scene of a wall projection mode according to an embodiment of the present invention; FIG.

图9为本发明实施例所涉及的一种天花板投影模式的场景示意图；FIG. 9 is a schematic diagram of a scene of a ceiling projection mode according to an embodiment of the present invention; FIG.

图10为本发明实施例所涉及的一种位置和角度固定的反射镜的架构示意图；FIG. 10 is a schematic structural diagram of a mirror with fixed position and angle according to an embodiment of the present invention; FIG.

图11为本发明实施例所涉及的一种投影方法的场景示意图；FIG. 11 is a schematic diagram of a scenario of a projection method according to an embodiment of the present invention;

图12为本发明实施例所涉及的一种投影画面的示意图；FIG. 12 is a schematic diagram of a projection screen according to an embodiment of the present invention; FIG.

图13为本发明实施例所涉及的一种通过平面反射镜反射得到的投影画面尺寸的示意图；FIG. 13 is a schematic diagram showing a size of a projection screen obtained by reflection of a plane mirror according to an embodiment of the present invention; FIG.

图14为本发明实施例所涉及的一种通过非球面反射镜反射得到的投影画面尺寸的示意图；FIG. 14 is a schematic diagram showing a size of a projection screen obtained by reflection by an aspherical mirror according to an embodiment of the present invention; FIG.

图15为本发明实施例所涉及的一种投影设备的结构示意图；FIG. 15 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention; FIG.

图16为本发明实施例所涉及的一种投影设备实现升降的示意图；FIG. 16 is a schematic diagram of a projection apparatus for lifting and lowering according to an embodiment of the present invention; FIG.

图17为本发明实施例所涉及的一种投影设备内的弹簧升降机构的结构示意图；17 is a schematic structural view of a spring lifting mechanism in a projection device according to an embodiment of the present invention;

图18为本发明实施例所涉及的一种投影方法中墙面场景投影画面朝向的示意图；FIG. 18 is a schematic diagram showing the orientation of a projection screen of a wall surface in a projection method according to an embodiment of the invention; FIG.

图19为本发明实施例所涉及的一种投影方法中从墙面投影场景切换为桌面投影场景时投影画面朝向的转换的示意图；FIG. 19 is a schematic diagram of transition of a projection screen orientation when switching from a wall projection scene to a desktop projection scene in a projection method according to an embodiment of the invention; FIG.

图20-22为本发明实施例所涉及的一种投影方法中用户对投影画面进行触控操作相关的场景示意图；20-22 are schematic diagrams of a scene related to a user performing a touch operation on a projection screen in a projection method according to an embodiment of the invention;

图23为本发明实施例一种投影设备的结构示意图；FIG. 23 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention; FIG.

图24为本发明实施例所涉及的一种投影方法中对图片进行梯形校正的流程示意图；FIG. 24 is a schematic flowchart of trapezoidal correction of a picture in a projection method according to an embodiment of the present invention; FIG.

图25-27为本发明实施例所涉及的一种投影方法中的梯形校正算法相关的流程示意图。25-27 are schematic flowcharts related to a trapezoid correction algorithm in a projection method according to an embodiment of the present invention.

具体实施方式detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments.

本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。 The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

本发明实施例提供了一种投影设备，如图23所示为本发明提供的投影设备的一个实施例，其中电池、扬声器和USB接口是可选的。Embodiments of the present invention provide a projection apparatus. As shown in FIG. 23, an embodiment of a projection apparatus provided by the present invention, wherein a battery, a speaker, and a USB interface are optional.

●角度传感器的使用和发挥的作用●The use and function of the angle sensor

下面描述本发明提供的投影设备是如何通过能识别角度的传感器(如陀螺仪、重力加速度传感器或三轴加速度传感器等，本案中可以使用其中的一个或多个)来检测投影设备的摆放形态(或摆放角度)，进而自动调节投影模式(如桌面投影模式、天花板投影模式或墙面投影模式)的。如图1所示，投影设备上的角度传感器通过检测投影设备所处的角度，获得投影设备的摆放角度数据，并将所述投影设备的摆放角度数据发送给处理器(如应用处理器)。处理器获得所述投影设备的摆放角度数据后，获取与该摆放角度数据相对应的投影参数(包括流明度、投影画面朝向、梯形校正相关的参数以及用于指示是否开启用户对投影画面进行触控的触控功能的参数等)，并将所述投影参数发送给投影模组。所述投影模组根据所述投影参数中的部分或全部参数来处理待投影视频数据(如进行梯形校正处理)，进而将处理后的待投影视频数据通过发射光发射到反射镜上，通过反射镜的反射，获得所述处理后的待投影视频数据投影在所述物体表面的投影画面。The following describes how the projection apparatus provided by the present invention detects the placement of the projection apparatus through an angle-aware sensor (such as a gyroscope, a gravity acceleration sensor, or a three-axis acceleration sensor, etc., one or more of which can be used in the present case). (or the angle) to automatically adjust the projection mode (such as desktop projection mode, ceiling projection mode or wall projection mode). As shown in FIG. 1 , the angle sensor on the projection device obtains the placement angle data of the projection device by detecting the angle at which the projection device is located, and transmits the projection angle data of the projection device to the processor (eg, an application processor). ). After obtaining the placement angle data of the projection device, the processor acquires projection parameters corresponding to the placement angle data (including lumens, projection screen orientation, keystone related parameters, and indicating whether to open the user to the projection screen Performing parameters of the touch function of the touch, etc., and transmitting the projection parameters to the projection module. The projection module processes the video data to be projected according to some or all of the parameters of the projection parameter (for example, performing trapezoidal correction processing), and then transmitting the processed video data to be projected to the mirror through the emitted light, and transmitting The reflection of the mirror obtains a projection picture of the processed video data to be projected projected on the surface of the object.

●投影设备使用位置和角度固定的反射镜●The projection device uses a fixed position and angle mirror

本发明提供的投影设备上设置有位置和角度固定的反射镜，所述反射镜为平面反射镜或非球面反射镜，用于根据反射原理反射来自所述所述投影模组的发射光，所述发射光被反射到一个物体表面，得到经过所述投影模组处理后的待投影视频数据投影在所述物体表面的投影画面。反射面不是规则球面的镜面统称为非球面镜。目前为解决球面镜成像不清晰、歪曲，视角狭小等不良现象，非球面镜已经广泛应用在配镜、摄影、投影等光学领域。The projection device provided by the present invention is provided with a mirror with a fixed position and an angle, and the mirror is a plane mirror or an aspheric mirror for reflecting the emitted light from the projection module according to the reflection principle. The emitted light is reflected to the surface of an object, and a projection picture of the video data to be projected processed by the projection module is projected on the surface of the object. Mirrors whose reflecting surfaces are not regular spheres are collectively referred to as aspherical mirrors. At present, in order to solve the unsatisfactory phenomenon that the spherical mirror image is unclear, distorted, and the angle of view is narrow, aspherical mirrors have been widely used in optics such as glasses, photography, and projection.

本发明投影设备采用非球面镜(即非球面反射镜)，是通过非球面镜在不同投影区域内的曲率(根据成像角度、距离等参数设定)不同实现角度投影导致光点变形的反向调节，达成投影画面的可视效果。The projection device of the invention adopts an aspherical mirror (ie, an aspherical mirror), which is a reverse adjustment of the spot deformation caused by the angle projection of the aspherical mirror in different projection regions (according to the imaging angle, the distance and the like). Achieve the visual effect of the projected picture.

相比平面透镜只能将光路按原发射光路径直接透射出去而言，通过使用所述反射镜，可以改变光路(光路从原来的发射光路经反射，改变为另一条不同的发射光路)，这样可以使得投影设备能支持桌面投影模式(只需将投影设备置于正立的摆放形态即可实现桌面投影模式)。若投影设备使用平面透镜，光路没法改变，要实现桌面投影模式会比较难，可能的方法是将投影设备倒挂在空中，使得光路能直射到桌面，但无疑这种方法比较难操作。本发明实施例中的反射镜优选非球面反射镜，如凸型非球面反射镜(如图3和图5)或凹型非球面反射镜(如图4和图6)。非球面反射镜具有免调焦功能，可以使得投影画面不需要用户手动调焦；另外非球面反射镜具有较好的放大功能(相比平面反射镜和平面透镜)，可以更好地增大投影画面尺寸，如图13和14所示，在入射光光路相同的情况下，非球面反射镜下得到的投影画面尺寸是平面反射镜下得到的投影画面尺寸A的N倍，N大于1。Compared to a planar lens, the optical path can only be directly transmitted out of the original emitted light path. By using the mirror, the optical path can be changed (the optical path is reflected from the original transmitted light path and changed to another different emitted light path), so that It can make the projection device support the desktop projection mode (the desktop projection mode can be realized by simply placing the projection device in an upright position). If the projection device uses a flat lens, the optical path cannot be changed. It is difficult to realize the desktop projection mode. The possible method is The projection device is hung upside down in the air so that the light path can be directed to the desktop, but this method is undoubtedly difficult to operate. The mirrors in the embodiments of the invention are preferably aspherical mirrors, such as convex aspheric mirrors (as in Figures 3 and 5) or concave aspheric mirrors (as in Figures 4 and 6). The aspherical mirror has a focus-free function, which allows the projected image to be manually adjusted without the user's focus; in addition, the aspherical mirror has a better magnification function (compared to a flat mirror and a flat lens), which can increase the projection better. The screen size, as shown in FIGS. 13 and 14, is the same as the incident light path, and the projected picture size obtained under the aspherical mirror is N times the size A of the projected picture obtained under the plane mirror, and N is greater than 1.

反射镜的位置和角度固定是通过结构固定的反射镜支架来实现的。如图10所示，投影模组的上边缘处设有反射镜支架，所述反射镜支架与所述投影模组之间紧固相连，所述反射镜支架用于容纳和固定所述反射镜，使所述反射镜的位置和角度相对于投影模组固定。反射镜装配在反射镜支架上，这个反射镜支架可以通过螺钉紧固形式和投影模组组装在一起。图10中所示的反射镜为凸型非球面反射镜，具体可如图15所示(将投影设备倒立)。The position and angle of the mirror are fixed by a fixed mirror bracket. As shown in FIG. 10, a mirror bracket is disposed at an upper edge of the projection module, and the mirror bracket is fastened to the projection module, and the mirror bracket is configured to receive and fix the mirror. The position and angle of the mirror are fixed relative to the projection module. The mirror is mounted on a mirror holder that can be assembled by means of a screw fastening and a projection module. The mirror shown in Fig. 10 is a convex aspheric mirror, as shown in Fig. 15 (inverted projection apparatus).

反射镜和投影模组之间的夹角会影响投影光路及投影画面(即会影响反射光路的反射角度A)，下面参考图11、图12和表1进行简单举例，仅作为示意性的说明。本发明中反射镜是固定装配在反射镜支架上的，故使得反射镜和投影模组之间的夹角是固定的。图11中A为投影反射光路和投影原始光路间的夹角,此夹角A和梯形校正的角度B(图12所示)不绝对相等(同时受曲面镜的曲率的影响)。但对于反射镜已固定的场景，此角度A越大，梯形畸变角度越大，梯形校正的难度也越大。图11中L3为投影画面距投影设备的距离的示意，L4为投影画面尺寸的一种示意。The angle between the mirror and the projection module affects the projection light path and the projected image (ie, the reflection angle A that affects the reflected light path). A simple example is given below with reference to FIG. 11, FIG. 12 and Table 1 for illustrative purposes only. . In the present invention, the mirror is fixedly mounted on the mirror holder, so that the angle between the mirror and the projection module is fixed. In Fig. 11, A is the angle between the projected reflected light path and the projected original light path, and the angle A and the trapezoidal corrected angle B (shown in Fig. 12) are not absolutely equal (while being affected by the curvature of the curved mirror). However, for a scene where the mirror is fixed, the larger the angle A is, the larger the trapezoidal distortion angle is, and the more difficult the trapezoidal correction is. In Fig. 11, L3 is an illustration of the distance of the projection screen from the projection device, and L4 is an indication of the size of the projection screen.

表1Table 1

A的值建议在15～30度范围内。The value of A is recommended to be in the range of 15 to 30 degrees.

●投影设备上的投影模组●Projection module on the projection device

投影设备上设有投影模组(如图10和图15中除去反射镜和反射镜支架后剩下的部分)，投影模组与投影设备上的一个或多个处理器相连，用于发射出发射光，所述发射光是将来自所述一个或多个处理器的待投影视频数据根据投影参数中的部分或全部参数进行处理后得到处理后的待投影视频数据，采用预设的光源形式对所述处理后的待投影视频数据进行发射得到的，所述预设的光源形式为DLP、镭射或LCoS。其中DLP和LCoS为常用的投影仪使用的，需要调焦。镭射不需要调焦。The projection device is provided with a projection module (as shown in FIG. 10 and FIG. 15 after removing the mirror and the mirror bracket), and the projection module is connected to one or more processors on the projection device for launching Emitting light that is to be projected from the one or more processors The data is processed according to some or all of the parameters in the projection parameters, and the processed video data to be projected is obtained, and the processed video data to be projected is transmitted by using a preset light source form, and the preset light source form is obtained. For DLP, laser or LCoS. Among them, DLP and LCoS are used for commonly used projectors, and need to be adjusted. The laser does not need to be adjusted.

●投影设备主要有固定的三种摆放形态●The projection equipment mainly has three fixed placement forms.

本发明提供的投影设备主要有固定的三种摆放形态(正立、倒立和平躺)，对应三种投影模式(如桌面投影模式、墙面投影模式或天花板投影模式，分别如图7、8和9所示)。这三种投影模式是日常生活中用户使用投影设备最多的三个场景。这三种投影模式对应的投影设备的摆放形态是用户很容易就能将投影设备摆放好的，三种摆放形态所对应的投影设备的摆放角度固定，包括，每个不同的摆放角度都对应一种对应于该摆放角度的T型校正，固定的三个摆放角度一般共需要进行三种对应于这些摆放角度的T型校正，且因为这三个摆放角度已知并固定，投影设备可以重点针对这三个摆放角度，预先配置好这三个摆放角度下的T型校正所用的参数，从而保证这三个摆放角度下投影画面进行T型校正的效果。当然，本发明提供的投影设备也可以有所述三种摆放形态之外的摆放形态，即还可以由所述三个摆放角度外的其他摆放角度，具体用户可以根据需要对摆放角度进行调节(如通过用物品以一个方式垫在投影设备下，使得投影设备倾斜成一定角度，具体倾斜角度可以通过不同方式来垫投影设备来达到)。因为其他摆放角度可能的取值太多，不固定，投影设备无法有针对性地预先配置所述其他摆放角度下的T型校正所用的参数，虽然可以对一些摆放角度预先进行统一的配置，但无法保证所述其他摆放角度下投影画面进行T型校正的效果。若摆放角度过多，会使得总共需要进行的T型校正的种类(每一种对应一个摆放角度)增多，增大T型校正的难度。若摆放角度不固定，也会增大T型校正的难度。本发明提供的投影设备主要有三种已知且固定的摆放角度，使得投影设备的摆放形态的可靠性高，对投影画面进行T型校正的难度降低，且能保证投影画面进行T型校正的效果。投影设备的摆放形态的可靠性高，可以获得更精准的对应于这些摆放形态的投影参数，进而提高了这些摆放形态下投影画面的投影效果。The projection device provided by the invention mainly has three fixed placement modes (upright, inverted and lying), corresponding to three projection modes (such as desktop projection mode, wall projection mode or ceiling projection mode, respectively, as shown in Figures 7 and 8 respectively). And 9)). These three projection modes are the three scenarios in which the user uses the projection device most in daily life. The projection device corresponding to the three projection modes is such that the projection device can be easily placed by the user, and the projection angles of the projection devices corresponding to the three placement modes are fixed, including each different pendulum. The angle of the pair corresponds to a T-type correction corresponding to the angle of the arrangement. The three fixed angles generally require three types of T-correction corresponding to the angles of the placement, and since the three angles have been Knowing and fixing, the projection equipment can focus on the three placement angles, pre-configure the parameters used for the T-type correction under the three placement angles, so as to ensure that the projection images are T-corrected under the three placement angles. effect. Of course, the projection device provided by the present invention may also have a placement form other than the three placement modes, that is, other placement angles other than the three placement angles, and the specific user may The angle is adjusted (for example, by using the article to be placed under the projection device in one way, so that the projection device is tilted at an angle, and the specific tilt angle can be achieved by padding the projection device in different ways). Because the other placement angles may have too many values and are not fixed, the projection device cannot pre-configure the parameters used for the T-type correction at the other placement angles, although some placement angles may be pre-uniformed. Configuration, but the effect of T-type correction on the projected picture at the other placement angles cannot be guaranteed. If the placement angle is too large, the total number of T-type corrections (one for each placement angle) that need to be performed is increased, and the difficulty of the T-type correction is increased. If the placement angle is not fixed, the difficulty of the T-type correction will also increase. The projection device provided by the invention mainly has three known and fixed placement angles, so that the reliability of the projection device is high, the difficulty of T-correction of the projection image is reduced, and the T-shaped correction of the projection image can be ensured. Effect. The projection device has high reliability in the placement mode, and can obtain more precise projection parameters corresponding to these placement modes, thereby improving the projection effect of the projection images in these placement modes.

●不同投影模式下的投影参数●Projection parameters in different projection modes

不同投影模式分别对应不同的投影参数，这些不同的投影参数具有如下效果中的至少一个：Different projection modes respectively correspond to different projection parameters, and these different projection parameters have at least one of the following effects:

1)各种场景下流明度自动调节1) Automatic adjustment of lumens in various scenes

通过角度传感器确定产品的摆放形式，针对各种应用场景调整投影模组投射的流明度。如桌面场景光路相对短，画面较小，对应的流明度适当低一些(如可以调整为最大流明度*0.7)；墙面及天花板场景时，光路长，投影画面大，对应流明度设定可以高一些(入可以调整为最大流明度)。The angle sensor is used to determine the placement of the product, and the brightness of the projection of the projection module is adjusted for various application scenarios. For example, the scene of the desktop scene is relatively short, the picture is small, and the corresponding lumen is appropriate. Lower (such as can be adjusted to the maximum lumens * 0.7); wall and ceiling scenes, the light path is long, the projection screen is large, the corresponding lumens can be set higher (in can be adjusted to the maximum lumens).

2)各种场景下梯形校正自动调节2) Automatic adjustment of keystone correction in various scenes

通过角度传感器感知产品摆放形态，判断出具体的应用场景，针对各种应用场景预设梯形校正参数。The angle sensor senses the placement of the product, determines the specific application scenario, and presets the trapezoidal correction parameters for various application scenarios.

如桌面投影场景可以预设梯形校正参数；Such as the desktop projection scene can preset the trapezoidal correction parameters;

墙面及天花板场景时，角度传感器根据产品摆放的角度自动调取梯形校正参数适配应用场景。In the case of wall and ceiling scenes, the angle sensor automatically adjusts the trapezoidal correction parameter adaptation application according to the angle at which the product is placed.

3)各种场景下投影画面朝向自动调节3) Automatic adjustment of the projection orientation in various scenes

如图18和19所示，当角度传感器感知到投影设备由墙面投影场景切换为桌面投影场景时，投影画面朝向需要针对需求进行对应调整，投影画面朝向需要旋转180°，才能使用户方便地看到画面朝向符合用户视线习惯的投影画面。As shown in FIGS. 18 and 19, when the angle sensor senses that the projection device is switched from the wall projection scene to the desktop projection scene, the projection screen orientation needs to be adjusted correspondingly to the requirement, and the projection screen orientation needs to be rotated by 180° to facilitate the user. See the projected image facing the user's line of sight.

4)各种场景下自动开启或关闭触控功能4) Automatically turn the touch function on or off in various scenes

当角度传感器感知到墙面场景切换桌面投影时，自动开启或关闭触控模组(如桌面及墙面投影场景时开启触控模组，而天花板场景时就关闭触控模组)。When the angle sensor senses that the wall scene switches the desktop projection, the touch module is automatically turned on or off (such as the touch module is turned on when the desktop and the wall are projected, and the touch module is turned off when the ceiling scene is closed).

所述触控功能即用户对投影画面进行触控操作的功能。The touch function is a function of a user performing a touch operation on a projection screen.

上述方案中，投影设备中设置角度传感器，可以实现投影设备在各种投影场景下对流明度、梯形校正、投影画面朝向、是否开启触控功能的自动调节。In the above solution, the angle sensor is disposed in the projection device, and the projection device can automatically adjust the fluency, the keystone correction, the projection screen orientation, and whether the touch function is turned on in various projection scenarios.

●投影设备可自由升降●Projection equipment can be lifted freely

接下来具体描述如何通过所述两个外壳之间的伸缩结构实现所述投影主模块的升降。投影光路的长短影响投影画面的尺寸大小，或者，从另一个方面，也可以说，反射镜与投影画面所在的物体表面(以下简称投影面)的距离影响投影画面的尺寸大小，因为反射镜与投影画面所在的物体表面(以下简称投影面)的距离决定了投影光路的长短。投影光路越长，得到的投影画面的尺寸越大；投影光路越短，得到的投影画面的尺寸越小。Next, how to lift and lower the projection main module by the telescopic structure between the two outer casings will be specifically described. The length of the projection light path affects the size of the projected image, or, on the other hand, the distance between the mirror and the surface of the object on which the projected image is located (hereinafter referred to as the projection surface) affects the size of the projected image because the mirror and the mirror The distance of the surface of the object on which the projection screen is located (hereinafter referred to as the projection surface) determines the length of the projection optical path. The longer the projection path, the more The size of the projected picture is larger; the shorter the projected light path, the smaller the size of the resulting projected picture.

通过所述两个外壳之间的伸缩结构实现所述投影主模块的升降，一方面，使得投影设备的体积可大可小，在使用时可以变大，在携带时可以变小，故减小了投影设备的尺寸，提高了投影设备的便携性和使用灵活性；另一方面，在使用时，当所述投影主模块上升后，在桌面投影模式下，反射镜与投影画面所在的物体表面(此时为桌面)的距离变大，故使得投影光路变长，进而得到的投影画面的尺寸更大，更方便用户观看和对投影画面进行操控(如在投影画面上进行触控操作)。The lifting and lowering of the projection main module is realized by the telescopic structure between the two outer casings. On the one hand, the volume of the projection device can be large or small, can be enlarged in use, can be reduced when being carried, and thus can be reduced. The size of the projection device improves the portability and flexibility of the projection device; on the other hand, when in use, when the projection main module rises, in the desktop projection mode, the surface of the object on which the mirror and the projection screen are located The distance (in this case, the desktop) becomes larger, so that the projection optical path becomes longer, and the resulting projected picture has a larger size, which is more convenient for the user to view and manipulate the projected picture (such as performing a touch operation on the projected picture).

投影设备设置有升降机构，使得投影设备的内外两个外壳可以通过所示升降机构(伸缩结构)能进行伸缩(如图16所示)，投影时可以增加投影设备的高度，拉长光路，实现投影画面增大，提升用户的操控体验。缩起状态下投影设备的高度降低，提升了便携性。The projection device is provided with a lifting mechanism, so that the inner and outer casings of the projection device can be telescoped through the lifting mechanism (the telescopic structure) as shown in the figure (as shown in FIG. 16), and the height of the projection device can be increased during projection to lengthen the optical path. The projection screen is enlarged to enhance the user's control experience. The height of the projection device is lowered in the retracted state, which improves portability.

可以通过如图17所示的弹簧升降机构实现弹起后拉长投影光路，增大投影画面尺寸，收起后整机尺寸变小，提升便携性。The spring light lifting mechanism shown in FIG. 17 can be used to lengthen the projection light path after the bounce, and the size of the projection screen is increased, and the size of the whole machine becomes smaller after the stowage, thereby improving portability.

对图17说明如下：Figure 17 illustrates the following:

1.当通过按压产品顶部(内壳的顶部)或按下按钮释放弹簧时，弹簧提供升起的动力，上方部件便随着导轨滑动，最终拉杆挂住导轨底部，产品(投影设备)完全打开；1. When the spring is released by pressing the top of the product (top of the inner casing) or pressing the button, the spring provides the lifting power, the upper part slides with the guide rail, and finally the rod is hung on the bottom of the rail, and the product (projection equipment) is fully opened. ;

2.当按压产品顶部(内壳的顶部)，弹簧压缩，导轨牵引拉杆滑动，当拉杆滑动到导轨顶部后即会滑入定位槽内，实现锁固，产品合起。2. When pressing the top of the product (top of the inner casing), the spring is compressed, and the guide rail pulls the rod. When the rod slides to the top of the rail, it will slide into the positioning groove to realize the locking and the product is closed.

●投影设备可设有触控模组，实现用户对投影画面的触控操作●The projection device can be equipped with a touch module to realize the user's touch operation on the projection screen.

本发明提供的投影设备上可以设有触控模组(包括结构光手势识别传感器，红外发射传感器和红外摄像头)，用于实现用户对投影画面的触控操作。以图20、21和22为例进行说明。The projection device provided by the invention can be provided with a touch module (including a structured light gesture recognition sensor, an infrared emission sensor and an infrared camera) for realizing a user's touch operation on the projection screen. 20, 21 and 22 will be described as an example.

如图20和图21所示，红色线区域(即图20中标有字母A的矩形区域或图21或图22中左边两条光路之间所示意的地面上的一段实线所代表的区域)为投影画面及触控区域，蓝色线区域(即图20中与所述矩形区域在同一平面上的三角形圈住的区域，或图21或图22中地面上从最左边的光路到最右边的投影设备之间的一段虚线所代表的区域)为平面红外结构光覆盖区域，黄色线为红外摄像头覆盖并可读取区域。As shown in FIG. 20 and FIG. 21, the red line region (ie, the rectangular region marked with the letter A in FIG. 20 or the region represented by a solid line on the ground between the two left optical paths in FIG. 21 or FIG. 22) For the projection picture and the touch area, the blue line area (ie, the area enclosed by the triangle on the same plane as the rectangular area in FIG. 20, or the leftmost light path to the right side on the ground in FIG. 21 or FIG. 22 The area represented by a dotted line between the projection devices is a planar infrared structured light coverage area, The yellow line covers the infrared camera and can read the area.

实现过程可如下所述：The implementation process can be as follows:

a.红外发射传感器(如图21中投影设备最下端的小方块所示意的元件)发射平面红外结构光覆盖在投影画面上方1～5mm范围内；a. Infrared emission sensor (such as the element shown in the lowermost square of the projection device in Figure 21) emitting plane infrared structure light coverage in the range of 1 ~ 5mm above the projection screen;

b.红外摄像头(如图21中投影设备最上端发出两条光线的小组件所示)可读取画面也同样覆盖投影画面区域，当手指触摸投影画面时，红外光打在手指上发生漫反射，红外摄像头便可以读取到对应点位置光面的变化，可以把此处对应的坐标位置回传控制***实现此点的触控。同时可以识别一个和多个手指的触控。b. Infrared camera (shown as the small component that emits two lights at the top of the projection device in Figure 21). The readable image also covers the projected image area. When the finger touches the projected image, the infrared light hits the finger and diffuses. The infrared camera can read the change of the smooth surface of the corresponding point position, and the corresponding coordinate position can be returned to the control system to realize the touch at this point. At the same time, the touch of one or more fingers can be recognized.

另，多手指操作时，手指前后操控时后面手指的操作易被忽略的问题，我们可以采用立体多结构光架构(2个或多个红外结构光源)，提升触控识别的精准及可靠性。如图22所示，新增加一个红外结构光(绿色区域，即两条实线光路所示意的区域)，用2个红外结构光源(新增的红外结构光源如图22中发出两条实线光路的方块所示的组件)来得到立体多结构光架构，实现手指触控识别度的互补，提升触控识别精度。In addition, when multi-finger operation, the operation of the back finger is easy to be ignored when the finger is operated back and forth, we can use the stereo multi-structure optical architecture (two or more infrared structure light sources) to improve the accuracy and reliability of the touch recognition. As shown in Fig. 22, a new infrared structure light (green area, that is, the area indicated by two solid line optical paths) is newly added, and two infrared structure light sources are used (the newly added infrared structure light source is as shown in FIG. 22; The components shown in the square of the optical path are used to obtain a stereo multi-structure optical architecture, which complements the recognition of the finger touch and improves the accuracy of the touch recognition.

●投影设备对投影画面进行自动梯形校正●The projection device performs automatic keystone correction on the projection screen

由于投影设备的投影光路一般很难严格和投影面(如墙壁、桌面或天花板)相互垂直，投影画面容易出现梯形失真，需要对投影画面进行梯形校正，以获得符合视觉需求的矩形的投影画面。梯形校正与投影光路(在本文中即为反射光路)的角度有关。Since the projection light path of the projection device is generally difficult to be strictly perpendicular to the projection surface (such as a wall, a table top or a ceiling), the projection image is prone to trapezoidal distortion, and the projection screen needs to be trapezoidally corrected to obtain a rectangular projection image conforming to the visual requirements. The keystone correction is related to the angle of the projected light path (in this case, the reflected light path).

投影模组本身可以具有梯形校正功能，具体采用的梯形校正算法可以是反梯形校正算法等。当反射光的反射角度较小时，通过投影模组本身具有的梯形校正功能即可使投影画面获得较好的梯形校正效果。当由于反射光的反射角度过大，导致投影画面的梯形失真严重，超出投影模组的梯型校正的能力，导致不能通过投影模组自身梯型校正能力获得符合视觉需求的矩形的投影画面时，可以在所述投影设备上增加反梯形校正算法以对投影画面进行初步自动梯形校正来获得梯形失真较小的投影画面，以使得初步自动梯形校正后的投影画面的梯形失真程度在所述投影模组自身的梯形校正能力范围内。原始视频数据经过初步自动梯形校正后，再经过所述投影模组的梯形校正，即可获得符合视觉需求的矩形的投影画面。反梯型校正算法是针对投影设备投影光路将要产生的投影画面(或称为投影图像)的梯形失真采用插值算法对原图像进行几何变换，产生一个反向的补偿梯形图像，以抵偿投影光路产生的投影图像梯形失真,使得投影后的图像呈现较为规整的矩形(梯形失真较小或无梯形失真)。The projection module itself can have a trapezoidal correction function, and the specifically used trapezoidal correction algorithm can be an inverse trapezoidal correction algorithm or the like. When the reflection angle of the reflected light is small, the trapezoidal correction function of the projection module itself can obtain a better trapezoidal correction effect on the projection image. When the angle of reflection of the reflected light is too large, the trapezoidal distortion of the projected picture is severe, which exceeds the ability of the ladder module to correct the projection module, resulting in a rectangular projection image that cannot meet the visual requirements through the projection module's own ladder correction capability. An anti-trapezoidal correction algorithm may be added to the projection device to perform preliminary automatic keystone correction on the projection image to obtain a projection image with less trapezoidal distortion, so that the degree of trapezoidal distortion of the projection image after the initial automatic trapezoidal correction is at the projection The module's own trapezoidal correction capability is within range. After the initial video data is subjected to initial automatic trapezoidal correction, and then through the trapezoidal correction of the projection module, a rectangular projection image conforming to the visual requirement can be obtained. The anti-ladder correction algorithm is for the trapezoidal distortion of the projection picture (or projection image) to be generated by the projection device, and uses an interpolation algorithm to geometrically transform the original image to generate a reverse compensation trapezoidal image to compensate for the projection optical path. Projection image trapezoidal distortion, so that the projected image is rendered A more regular rectangle (less trapezoidal distortion or no keystone distortion).

所述自动梯形校正可以是通过红外camera读取投影到物体表面的投影画面的信息(包括投影画面的尺寸等)后，处理器使用梯形校正算法(如反梯形校正算法)对投影画面产生的梯形失真做的自动校正。本文中所述自动梯形校正指的是由投影设备自身进行梯形校正，不需要用户手动调节来进行梯形校正，具体流程图可以如图24所示。The automatic trapezoidal correction may be a ladder generated by the processor using a trapezoidal correction algorithm (such as an inverse trapezoidal correction algorithm) after reading information of a projection screen projected onto the surface of the object (including the size of the projection screen, etc.) by the infrared camera. Automatic correction for distortion. The automatic trapezoidal correction described herein refers to the trapezoidal correction performed by the projection device itself, and does not require manual adjustment by the user for trapezoidal correction. The specific flowchart can be as shown in FIG.

目前反梯形校正算法主要涉及垂直和水平两个方向上的梯形校正，如图2所示。At present, the inverse trapezoidal correction algorithm mainly involves trapezoidal correction in both vertical and horizontal directions, as shown in FIG.

垂直方向上的反梯形校正算法可以如图25所示：The inverse trapezoidal correction algorithm in the vertical direction can be as shown in Figure 25:

图25(1)为待投影的原始图像；Figure 25 (1) is the original image to be projected;

图25(2)为未进行反梯型校正处理所产生的失真图像(梯形失真角度超出投影模组自身梯形校正的能力)；Figure 25 (2) is a distortion image generated by the reverse ladder type correction processing (the trapezoidal distortion angle exceeds the ability of the projection module itself to trapezoidal correction);

图25(3)为投影前经反梯型校正处理后产生的补偿梯形图像；Figure 25 (3) is a compensated trapezoidal image generated after the anti-ladder type correction processing before projection;

图25(4)为经反梯型校正处理后得到相对规整的矩形投影图像(梯形失真角度在投影模组自身梯形校正能力范围内)。Fig. 25(4) shows a relatively regular rectangular projection image obtained by the inverse ladder type correction processing (the trapezoidal distortion angle is within the trapezoidal correction capability of the projection module itself).

从上述可以看出垂直方向上的反梯形校正算法的主要工作就是由原规整的矩形图25(1)经图像处理中的插值算法通过几何变换得到补偿梯形图25(3)。It can be seen from the above that the main work of the inverse trapezoidal correction algorithm in the vertical direction is to obtain the compensated ladder diagram 25(3) by geometric transformation from the original rectangular graph 25(1) through the interpolation algorithm in the image processing.

反梯形校正算法流程可以如图26所示。The inverse trapezoid correction algorithm flow can be as shown in FIG.

整个成像路径可以如图27所示。The entire imaging path can be as shown in FIG.

本发明各方法实施例之间相关部分可以相互参考；各装置实施例所提供的装置用于执行对应的方法实施例所提供的方法，故各装置实施例可以参考相关的方法实施例中的相关部分进行理解。The related parts of the method embodiments of the present invention may be referred to each other; the apparatus provided in each device embodiment is used to perform the method provided by the corresponding method embodiment, so each device embodiment may refer to related methods in the related method embodiments. Partial understanding.

本发明各实施例中提供的消息/帧、模块或单元的名称仅为示例，可以使用其他名称，只要消息/帧、模块或单元的作用相同即可。The names of the messages/frames, modules, or units provided in the various embodiments of the present invention are merely examples, and other names may be used as long as the functions of the messages/frames, modules, or units are the same.

还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should also be noted that, in this context, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying such entities or operations. There is any such actual relationship or order between them. Furthermore, the terms "comprises," "comprising," or "include" or "the" It also includes other elements not explicitly listed, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关硬件来完成，所述的程序可以存储于一投影设备的可读存储介质中，该程序在执行时，包括上述全部或部分步骤，所述的存储介质，如：FLASH、EEPROM等。A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a readable storage medium of a projection device, and the program is executed. Including all or part of the above steps, the storage medium, such as: FLASH, EEPROM, and the like.

以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，不同的实施例可以进行组合，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何组合、修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The specific embodiments described above further explain the objects, technical solutions and beneficial effects of the present invention. It should be understood that different embodiments may be combined, and the above is only the specific embodiment of the present invention. It is not intended to limit the scope of the invention, and any combination, modification, equivalent substitution, modification, etc., which are within the spirit and scope of the invention, are intended to be included within the scope of the invention.

Claims

一种投影设备，其特征在于，所述投影设备包括投影主模块，所述投影主模块包括：A projection device, comprising: a projection main module, the projection main module comprising:

能检测角度的传感器，用于检测所述投影设备的摆放形态，得到与之相关的摆放形态信息，所述投影设备的摆放形态包括以下三种：正立，倒立和平躺；The sensor capable of detecting the angle is used for detecting the placement form of the projection device, and obtaining the placement information related thereto, and the placement form of the projection device includes the following three types: erect, inverted and lying;

无线通信模块，用于接收一个通信设备发送的原始视频数据；a wireless communication module, configured to receive original video data sent by a communication device;

一个或多个处理器，与所述角度传感器和所述无线通信模块相连接，用于根据所述角度传感器检测到的所述投影设备的摆放形态信息获取与所述摆放形态信息相对应的投影参数，根据所述投影参数中的部分或全部参数，对所述无线通信模块接收到的原始视频数据进行处理得到待投影视频数据，所述投影参数包括以下参数：流明度、投影画面朝向、梯形校正相关的参数；One or more processors connected to the angle sensor and the wireless communication module, configured to acquire, according to the placement information information of the projection device detected by the angle sensor, corresponding to the placement mode information Projecting parameters, according to some or all of the parameters of the projection parameters, processing the original video data received by the wireless communication module to obtain video data to be projected, the projection parameters including the following parameters: lumens, projection screen orientation , trapezoidal correction related parameters;

投影模组，与所述一个或多个处理器相连，用于发射出发射光，所述发射光是将来自所述一个或多个处理器的所述待投影视频数据根据所述投影参数中的部分或全部参数进行处理后得到处理后的待投影视频数据，采用预设的光源形式对所述处理后的待投影视频数据进行发射得到的；a projection module coupled to the one or more processors for transmitting emitted light, the emitted light being based on the projection data from the one or more processors After the partial or all parameters are processed, the processed video data to be projected is obtained, and the processed video data to be projected is transmitted by using a preset light source form;

位置和角度固定的反射镜，所述反射镜为平面反射镜或非球面反射镜，用于根据反射原理反射来自所述所述投影模组的发射光，所述发射光被反射到一个物体表面，得到所述处理后的待投影视频数据投影在所述物体表面的投影画面；a fixed position and angle mirror, the mirror being a plane mirror or an aspheric mirror for reflecting emitted light from the projection module according to a reflection principle, the emitted light being reflected to an object surface Obtaining a projected image of the processed video data to be projected projected on the surface of the object;

反射镜支架，与所述投影模组之间紧固相连，用于容纳和固定所述反射镜，使所述反射镜的位置和角度相对于投影模组固定；a mirror bracket is fastened to the projection module for receiving and fixing the mirror, so that the position and an angle of the mirror are fixed relative to the projection module;

其中，among them,

当所述投影设备的摆放形态为正立时，所述投影画面所在的物体表面为桌面或地面；When the projection device is placed in an upright position, the surface of the object on which the projection screen is located is a table top or a ground;

当所述投影设备的摆放形态为倒立时，所述投影画面所在的物体表面为天花板表面；When the projection device is placed in an inverted state, the surface of the object on which the projection screen is located is a ceiling surface;

当所述投影设备的摆放形态为平躺时，所述投影画面所在的物体表面为墙面。When the projection device is placed in a flat state, the surface of the object on which the projection screen is located is a wall surface.
如权利要求1所述的投影设备，其特征在于，所述投影设备还包括相互套合在一起、通过伸缩结构能进行伸缩的内外两个外壳，所述投影主模块容纳在内部的外壳中，通过所述两个外壳之间的伸缩实现所述投影主模块的升降。The projection apparatus according to claim 1, wherein said projection apparatus further comprises two inner and outer outer casings that are sleeved together and telescopically extendable by a telescopic structure, said projection main module being housed in an inner casing, The lifting of the projection main module is achieved by the expansion and contraction between the two outer casings.
如权利要求1或2所述的投影设备，其特征在于，所述投影设备还包括触控模组。The projection device according to claim 1 or 2, wherein the projection device further comprises a touch module.
如权利要求3所述的投影设备，其特征在于，所述投影参数还包括是否开启触控功能，所述触控功能为用户对投影画面进行触控操作的功能。A projection apparatus according to claim 3, wherein said projection parameters further comprise Whether the touch function is enabled, the touch function is a function of the user performing a touch operation on the projected image.
如权利要求1-4任一所述的投影设备所述预设的光源形式为DLP、镭射或LCoS。The projection device according to any one of claims 1 to 4, wherein the preset light source is in the form of DLP, laser or LCoS.
一种用于投影的方法，其特征在于，所述方法包括：A method for projection, characterized in that the method comprises:

投影设备，包括反射镜，能检测角度的传感器；Projection device, including a mirror, a sensor capable of detecting an angle;

通过所述能检测角度的传感器检测所述投影设备的摆放形态，来调整投影方式，以调整到与该便携通信设备的摆放形态相对应的投影方式，所述摆放形态包括正立，倒立和平躺；Detecting a projection mode of the projection device by the sensor capable of detecting an angle, and adjusting a projection mode to adjust a projection mode corresponding to a placement form of the portable communication device, wherein the placement form includes an erect posture. Stand upside down and lie down;

当所述投影设备的摆放形态为正立时，所述投影方式为桌面或地面投影方式；When the projection device is placed in an upright position, the projection mode is a desktop or ground projection mode;

当所述投影设备的摆放形态为倒立时，所述投影方式为天花板投影方式；When the projection device is placed in an inverted state, the projection mode is a ceiling projection mode;

当所述投影设备的摆放形态为平躺时，所述投影方式为墙面投影方式。When the projection device is placed in a flat state, the projection mode is a wall projection mode.
如权利要求6所述的方法，其特征在于，所述反射镜的位置和角度固定，所述反射镜为平面反射镜或非球面反射镜。The method of claim 6 wherein the position and angle of the mirror are fixed and the mirror is a planar mirror or an aspheric mirror.
如权利要求7所述的方法，其特征在于，所述投影设备还包括：The method of claim 7, wherein the projection device further comprises:

无线通信模块，用于接收一个通信设备发送的原始视频数据；a wireless communication module, configured to receive original video data sent by a communication device;

一个或多个处理器，与所述角度传感器和所述无线通信模块相连接，用于根据所述角度传感器检测到的所述投影设备的摆放形态信息获取与所述摆放形态信息相对应的投影参数，根据所述投影参数中的部分或全部参数，对所述无线通信模块接收到的原始视频数据进行处理得到待投影视频数据，所述投影参数包括以下参数：流明度、投影画面朝向、梯形校正相关的参数；One or more processors connected to the angle sensor and the wireless communication module, configured to acquire, according to the placement information information of the projection device detected by the angle sensor, corresponding to the placement mode information Projecting parameters, according to some or all of the parameters of the projection parameters, processing the original video data received by the wireless communication module to obtain video data to be projected, the projection parameters including the following parameters: lumens, projection screen orientation , trapezoidal correction related parameters;

投影模组，与所述一个或多个处理器相连，用于发射出发射光，所述发射光是将来自所述一个或多个处理器的所述待投影视频数据根据所述投影参数中的部分或全部参数进行处理后得到处理后的待投影视频数据，采用预设的光源形式对所述处理后的待投影视频数据进行发射得到的；a projection module coupled to the one or more processors for transmitting emitted light, the emitted light being based on the projection data from the one or more processors After the partial or all parameters are processed, the processed video data to be projected is obtained, and the processed video data to be projected is transmitted by using a preset light source form;

反射镜支架，与所述投影模组之间紧固相连，用于容纳和固定所述反射镜，使所述反射镜的位置和角度相对于投影模组固定；a mirror bracket is fastened to the projection module for receiving and fixing the mirror, so that the position and an angle of the mirror are fixed relative to the projection module;

所述反射镜用于根据反射原理反射来自所述所述投影模组的发射光，所述发射光被反射到一个物体表面，得到所述处理后的待投影视频数据投影在所述物体表面的投影画面；The mirror is configured to reflect emitted light from the projection module according to a reflection principle, and the emitted light is reflected to an object surface, and the processed video data to be projected is projected on the surface of the object. Projection picture

其中，among them,

当所述投影设备的摆放形态为正立时，所述投影画面所在的物体表面为桌面或地面；When the projection device is placed in an upright position, the surface of the object on which the projection screen is located is a table top or a ground;

当所述投影设备的摆放形态为倒立时，所述投影画面所在的物体表面为天花板表面； When the projection device is placed in an inverted state, the surface of the object on which the projection screen is located is a ceiling surface;

当所述投影设备的摆放形态为平躺时，所述投影画面所在的物体表面为墙面。When the projection device is placed in a flat state, the surface of the object on which the projection screen is located is a wall surface.
如权利要求6-8任一所述的方法，其特征在于，所述投影设备还包括相互套合在一起、通过伸缩结构能进行伸缩的内外两个外壳，所述投影主模块容纳在内部的外壳中，通过所述两个外壳之间的伸缩实现所述投影主模块的升降。The method according to any one of claims 6 to 8, wherein the projection apparatus further comprises two inner and outer outer casings that are sleeved together and telescopically extendable through the telescopic structure, the projection main module being housed inside. In the outer casing, the lifting and lowering of the projection main module is achieved by the expansion and contraction between the two outer casings.
如权利要求8所述的方法，其特征在于，所述投影参数还包括是否开启触控功能，所述触控功能为用户对投影画面进行触控操作的功能。 The method of claim 8, wherein the projection parameter further comprises whether the touch function is turned on, and the touch function is a function of the user performing a touch operation on the projected image.