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Visible light implicit imaging communication method adaptive to imaging direction

A technology of shooting direction and communication method, which is applied in the field of visible light communication, can solve the problems of different mixing characteristics and does not take into account mixed frames at the receiving end, and achieve the effect of correct analysis

Active Publication Date: 2018-08-10
DONGGUAN XINDA INST OF INTEGRATED INNOVATION +1
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Problems solved by technology

[0002] At present, most of the studies on the communication between the display screen and the camera link do not take into account the phenomenon of mixed frames at the receiving end due to the refresh direction of the display screen and the direction of the camera CMOS rolling shutter (that is, the video frame played by the display screen is processed twice. The image is captured by the camera at the receiving end, and the captured video frame is a linear mixture of adjacent original video frames), and the combination of different directions between the refresh direction of the display screen and the direction of the camera's CMOS rolling shutter produces different mixing characteristics

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  • Visible light implicit imaging communication method adaptive to imaging direction
  • Visible light implicit imaging communication method adaptive to imaging direction
  • Visible light implicit imaging communication method adaptive to imaging direction

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Embodiment Construction

[0038] Through experiments, it is found that the mixed frame phenomenon is not only related to the relative refresh direction between the two (display refresh direction and camera CMOS rolling shutter direction), but also related to the refresh rate of the display screen and the frame rate of the camera. Different relative directions correspond to different mixing characteristics.

[0039] Therefore, the invention provides a visible light implicit imaging communication method that adapts to the shooting direction. The innovation points are: 1. Considering the mixed characteristics of the secondary imaging of the display screen and the camera link under different shooting angles, and addressing the problem of mixed frames Carry out analysis and modeling; 2. Based on the secondary imaging hybrid model, rationally design the frame format of the sending end, and give the corresponding processing flow of the receiving end, and propose a system for correct analysis of secondary imagi...

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Abstract

The invention relates to the technical field of visible light communication, and specifically discloses a visible light implicit imaging communication method adaptive to the imaging direction. The method comprises the following steps: randomly selecting a display screen refresh direction, and performing shooting on different CMOS rolling directions of a camera; obtaining secondary imaging hybrid characteristics through experimental analysis; establishing a secondary imaging hybrid model according to the secondary imaging hybrid characteristics; designing a sending end frame format based on thesecondary imaging hybrid model, and sending information; and parsing, by a receiving end, hybrid frame information in the secondary imaging hybrid model. According to the visible light implicit imaging communication method disclosed by the invention, the secondary imaging hybrid characteristics of the display screen and a camera link are explored through experiments of different shooting angles,the secondary imaging hybrid model is established, and communication is performed on the secondary imaging hybrid model, so that the information of a secondary imaging hybrid frame is correctly parsed.

Description

technical field [0001] The invention relates to the technical field of visible light communication, and specifically discloses a visible light implicit imaging communication method adaptive to a shooting direction. Background technique [0002] At present, most of the studies on the communication between the display screen and the camera link do not take into account the phenomenon of mixed frames at the receiving end due to the refresh direction of the display screen and the direction of the camera CMOS rolling shutter (that is, the video frame played by the display screen is processed twice. The image is captured by the camera at the receiving end, and the captured video frame is a linear mixture of adjacent original video frames), and the combination of different directions between the display screen refresh direction and the camera CMOS shutter direction produces different mixing characteristics. Contents of the invention [0003] In order to overcome the disadvantages...

Claims

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Application Information

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IPC IPC(8): H04N1/32H04B10/116
CPCH04B10/116H04N1/32149
Inventor 胡赟鹏唐燕群沈智翔李明超姚祥文张效义朱义君
Owner DONGGUAN XINDA INST OF INTEGRATED INNOVATION
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