WO2022036481A1 - 移动投影的校正与交互技术 - Google Patents

移动投影的校正与交互技术 Download PDF

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Publication number
WO2022036481A1
WO2022036481A1 PCT/CN2020/109429 CN2020109429W WO2022036481A1 WO 2022036481 A1 WO2022036481 A1 WO 2022036481A1 CN 2020109429 W CN2020109429 W CN 2020109429W WO 2022036481 A1 WO2022036481 A1 WO 2022036481A1
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computer
correction
projection
image
worker
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PCT/CN2020/109429
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English (en)
French (fr)
Inventor
王丹丁
徐天成
张志远
罗赛
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南京智导智能科技有限公司
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Priority to PCT/CN2020/109429 priority Critical patent/WO2022036481A1/zh
Publication of WO2022036481A1 publication Critical patent/WO2022036481A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details

Definitions

  • the present invention relates to the technical field of projection, in particular to the correction and interaction technology of mobile projection.
  • the picture correction of the mobile projection display wall needs to first establish the geometric and color transformation model of the display wall system composed of projectors, projection screens and other equipment, and then generate prediction compensation information according to the geometric and color feedback signals captured by digital cameras or cameras, and finally The regularity and information integrity of the output picture are realized through pre-compensation in both geometry and color.
  • actions such as marking and turning pages in the projection picture are often required to be completed through interaction with the computer.
  • the main purpose of the present invention is to provide a correction and interaction technology for moving projection, which can effectively solve the problems in the background technology.
  • Correction and interaction technology for mobile projection including a computer, one end of the computer is sequentially connected with a graphics worker, a signal source, a fusion device, a projector, a projection screen, and a camera, and the graphics worker includes a display module, an input module, and a communication module. module.
  • a connecting wire is provided between the graphic worker and the computer, the graphic worker and the computer are connected by a connecting wire through Ethernet, and the output port of the graphic worker is signally connected to the input port of the signal source .
  • the display module, the input module and the communication module are connected by signals, and the graphics worker and the display module, the input module and the communication module are all connected by signals.
  • the fusion device and the signal source are connected by a DVI signal
  • a connection line is provided between the projector and the fusion device
  • the fusion device and the projector are connected by a signal connection line.
  • the projector is used to project an image
  • the projection screen is used to receive the image projected by the projector
  • the camera is used to capture the image of the projection area
  • a light sensor is arranged inside the camera.
  • the camera and the computer are connected through a signal, and the computer is used to determine the difference between the actual image of the projection area captured by the camera and the theoretical projected image of the original image, so as to identify the pointer or finger, and use it to identify the pointer or finger. Simulate mouse operation.
  • the present invention has the following beneficial effects: the correction and interaction technology of the mobile projection can solve the correction problem of the projection through the automatic edge fusion technology of the projector, the automatic geometric correction technology, etc., the structure is clear, and at the same time. It can greatly reduce the construction personnel's later on-site maintenance of the projection system and reduce the cost of later maintenance.
  • the light response signal of the picture is captured by the light sensor in the camera.
  • the computer-centered closed-loop control system uses the data acquisition box to collect the light sensor.
  • the communication method remotely controls the graphics worker and the fusion device, so as to realize interaction, and the presenter can operate directly, which is fast and convenient.
  • FIG. 1 is a system diagram of the correction and interaction technology of mobile projection according to the present invention.
  • the correction and interaction technology of mobile projection includes a computer 1, and one end of the computer 1 is sequentially connected with a graphics worker 2, a signal source 3, a fusion device 4, a projector 5, a projection screen 6, and a camera 7.
  • the worker 2 includes a display module, an input module and a communication module.
  • the input module is used to receive the graphics and image information transmitted by the computer 1, and perform graphics and image processing in the graphics worker 2. With the display module, the processed graphics and image information can be displayed, which is conducive to viewing the graphics and image processing effects.
  • the module transmits the processed graphic image, a connecting wire is provided between the graphic worker 2 and the computer 1, and the graphic worker 2 and the computer 1 are connected by a connecting wire through the Ethernet, and the output port of the graphic worker 2 and the signal
  • the signal connection of the input port of the source 3 can realize the real-time and fast transmission of the signal source by using the signal connection.
  • the display module, the input module and the communication module are connected by signals, and the graphic worker 2 is connected with the display module, the input module and the communication module by signals.
  • the fusion device 4 and the signal source 3 are connected through a DVI signal, and the fusion device 4 can be used to integrate various signal sources, which is conducive to the conversion and projection of the projector 5.
  • the projector 5 is used to project the image
  • the projection screen 6 is used to receive the image projected by the projector 5
  • the camera 7 is used to capture the image of the projection area. Then, the graphic image displayed by the projection screen 6 is sent back to the computer 1 to form a closed-loop system, which can correct the problems in the projection in real time.
  • the signal connection between the camera 7 and the computer 1 is convenient for returning the captured information to the projection screen 6, which is conducive to real-time correction of the projected graphic image, and can ensure the projection effect.
  • the present invention is a correction and interaction technology for mobile projection.
  • a fixed edge is added to the edge of the projection screen 6 of the projector 5, and at least four corners and the center of the four edges of the projected image are added.
  • the camera 7 obtains the image of the projection area, and calculates the magnification ratio of the original image by identifying the above-mentioned edges and combining the corner and center marks.
  • the theoretical projection image is obtained by magnifying the image, and the image of the projection area is subtracted from the theoretical projection image by the camera 7 in real time to obtain the difference image, and the image similar to the pointer or finger is recognized on the difference image, and the image with the similar pointer or finger is recognized. , converted to mouse input corresponding to the original image point.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

公开了移动投影的校正与交互系统，包括计算机，所述计算机的一端依次连接有图形工作器、信号源、融合器、投影仪、投影屏、摄像机，所述图形工作器包括显示模块、输入模块以及通讯模块，所述图形工作器与计算机之间设置有连接导线，所述图形工作器与计算机之间利用连接导线通过以太网连接，所述图形工作器的输出端口与信号源的输入端口信号连接。其能解决投影的校正问题，结构清晰，同时也可以大大减轻施工人员对投影系统的后期现场维护，降低了后期维护的成本，能够识别投影图像上的类教鞭或手指，直接完成类鼠标操作，演示者可以直接操作，快捷方便。

Description

移动投影的校正与交互技术 技术领域
本发明涉及投影技术领域，特别涉及移动投影的校正与交互技术。
 背景技术
移动投影显示墙的画面校正则需要先建立由投影仪、投影屏幕等设备组成的显示墙系统的几何与颜色变换模型，然后根据数码相机或摄像头捕获的几何和颜色反馈信号生成预测补偿信息，最后通过几何与颜色两方面的预补偿来实现输出画面的规则性和信息完整性，而在投影演示过程中，往往需要通过与计算机的交互完成投影画面中的划线、翻页等动作，为实现上述技术，我们提出一种移动投影的校正与交互技术。
 技术问题
本发明的主要目的在于提供移动投影的校正与交互技术，可以有效解决背景技术中的问题。
 技术解决方案
为实现上述目的，本发明采取的技术方案为。
移动投影的校正与交互技术，包括计算机，所述计算机的一端依次连接有图形工作器、信号源、融合器、投影仪、投影屏、摄像机，所述图形工作器包括显示模块、输入模块以及通讯模块。
优选的，所述图形工作器与计算机之间设置有连接导线，所述图形工作器与计算机之间利用连接导线通过以太网连接，所述图形工作器的输出端口与信号源的输入端口信号连接。
优选的，所述显示模块、输入模块以及通讯模块之间通过信号连接，所述图形工作器与显示模块、输入模块以及通讯模块之间均为信号连接。
优选的，所述融合器与信号源之间通过DVI信号连接，所述投影仪与融合器之间设置有连接线，所述融合器与投影仪之间通过连接线信号连接。
优选的，所述投影仪用于投影图像，所述投影屏用于接投影仪投影的图像，所述摄像机用于捕捉投影区域的图像，所述摄像机的内部设置有光传感器。
优选的，所述摄像机与计算机之间通过信号连接，所述计算机用于判断摄像机捕捉到的投影区域的实际图像与原始图像的理论投影图像的差异，来识别出类教鞭或手指，并将其模拟鼠标进行操作。
 有益效果
与现有技术相比，本发明具有如下有益效果：该移动投影的校正与交互技术，通过投影仪的自动边缘融合技术、自动几何校正技术等，能解决投影的校正问题，结构清晰，同时也可以大大减轻施工人员对投影系统的后期现场维护，降低了后期维护的成本，通过摄像机内的光传感器来捕捉画面的光响应信号，以计算机为中心的闭环控制系统，用数据采集盒收集光传感器对每个光模式的响应信号，并利用计算机判断摄像机捕捉到的投影区域的实际图像与原始图像的理论投影图像的差异，来识别出类教鞭或手指，并将其模拟鼠标进行操作，通过网络通信的方式远程的对图形工作器和融合器设备进行控制，从而实现交互，演示者可以直接操作，快捷方便。
 附图说明
图1为本发明移动投影的校正与交互技术的系统图。
图中：1、计算机；2、图形工作器；3、信号源；4、融合器；5、投影仪；6、投影屏；7、摄像机。
 本发明的实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施方式，进一步阐述本发明。
如图1所示，移动投影的校正与交互技术，包括计算机1，计算机1的一端依次连接有图形工作器2、信号源3、融合器4、投影仪5、投影屏6、摄像机7，图形工作器2包括显示模块、输入模块以及通讯模块。
输入模块用于接收计算机1传递的图形图像信息，并在图形工作器2内进行图形图像处理，配合显示模块可以将处理过后的图形图像信息进行展示，有利于查看图形图像处理效果，再利用通讯模块将处理后的图形图像进行传递，图形工作器2与计算机1之间设置有连接导线，图形工作器2与计算机1之间利用连接导线通过以太网连接，图形工作器2的输出端口与信号源3的输入端口信号连接，利用信号连接可以实现信号源的实时快速传输。
显示模块、输入模块以及通讯模块之间通过信号连接，图形工作器2与显示模块、输入模块以及通讯模块之间均为信号连接。
融合器4与信号源3之间通过DVI信号连接，利用融合器4可以将各种信号源进行统一融合，有利于投影仪5进行转换投影，投影仪5与融合器4之间设置有连接线，融合器4与投影仪5之间通过连接线信号连接。
投影仪5用于投影图像，投影屏6用于接投影仪5投影的图像，摄像机7用于捕捉投影区域的图像，摄像机7的内部设置有光传感器，利用光传感器能够实时捕捉投影屏6上的图形图像，再将投影屏6展现的图形图像回传给计算机1，形成一个闭环系统，可以实时校正投影所出现的问题。
摄像机7与计算机1之间通过信号连接，方便回传对投影屏6的捕捉信息，有利于对投影图形图像进行实时校正，可以保证投影效果。
需要说明的是，本发明为移动投影的校正与交互技术，在使用时，对应投影仪5的投影屏6边缘加入固定的边，并在投影图像的四个角落和四个边的中心加入至少两个标记，摄像机7获取投影区域的图像，并通过识别上述边缘，结合角落和中心标记计算出原始图像的放大比例，利用摄像机7识别出任意两个中心标记即可计算出放大比例，将原始图像放大获取到理论投影图像，用摄像机7实时获取投影区域的图像减去理论投影图像，得到差异图像，在差异图像上识别出类教鞭或手指的图像，把具有识别出类教鞭或手指的图像，转换为对应原始图像点的鼠标输入。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (6)

  1. 移动投影的校正与交互技术，包括计算机（1），其特征在于：所述计算机（1）的一端依次连接有图形工作器（2）、信号源（3）、融合器（4）、投影仪（5）、投影屏（6）、摄像机（7），所述图形工作器（2）包括显示模块、输入模块以及通讯模块。
  2. 根据权利要求1所述的移动投影的校正与交互技术，其特征在于：所述图形工作器（2）与计算机（1）之间设置有连接导线，所述图形工作器（2）与计算机（1）之间利用连接导线通过以太网连接，所述图形工作器（2）的输出端口与信号源（3）的输入端口信号连接。
  3. 根据权利要求1所述的移动投影的校正与交互技术，其特征在于：所述显示模块、输入模块以及通讯模块之间通过信号连接，所述图形工作器（2）与显示模块、输入模块以及通讯模块之间均为信号连接。
  4. 根据权利要求1所述的移动投影的校正与交互技术，其特征在于：所述融合器（4）与信号源（3）之间通过DVI信号连接，所述投影仪（5）与融合器（4）之间设置有连接线，所述融合器（4）与投影仪（5）之间通过连接线信号连接。
  5. 根据权利要求1所述的移动投影的校正与交互技术，其特征在于：所述投影仪（5）用于投影图像，所述投影屏（6）用于接投影仪（5）投影的图像，所述摄像机（7）用于捕捉投影区域的图像，所述摄像机（7）的内部设置有光传感器。
  6. 根据权利要求1所述的移动投影的校正与交互技术，其特征在于：所述摄像机（7）与计算机（1）之间通过信号连接，所述计算机（1）用于判断摄像机（7）捕捉到的投影区域的实际图像与原始图像的理论投影图像的差异，来识别出类教鞭或手指，并将其模拟鼠标进行操作。
PCT/CN2020/109429 2020-08-17 2020-08-17 移动投影的校正与交互技术 WO2022036481A1 (zh)

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