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High definition video real time compressing as well as coding and decoding method

A high-definition video, compression coding technology, applied in high-definition color TV, color TV with pulse code modulation, etc., can solve the problems of long time consumption and high performance requirements, achieve high compression efficiency and solve the problem of insufficient transmission bandwidth , the effect of high compression ratio

Inactive Publication Date: 2010-02-24
NANJING UNIV
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Problems solved by technology

The current popular video compression methods have high requirements on the performance of embedded processors and take a long time, such as MPGE, H.264, etc. Real-time compression at 30 frames per second requires the performance of embedded processors , the overall cost of the equipment is not a small challenge

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  • High definition video real time compressing as well as coding and decoding method
  • High definition video real time compressing as well as coding and decoding method
  • High definition video real time compressing as well as coding and decoding method

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Embodiment Construction

[0027] The method of the invention provides a real-time video compression and decompression technology. After adopting this method, the real-time performance of video compression is guaranteed, and at the same time, the requirements for the performance of the embedded processor are also reduced, and the quality of the image is also guaranteed to a certain extent, so that both the real-time performance of the video signal and the quality of the compressed image can be taken into account. , which reduces the bandwidth of video signal transmission and reduces the cost of video transmission. Principle of the present invention is as follows:

[0028] A. Video compression

[0029] A1. Read in the Bayer format video signal input by the camera. Usually, the ratio of the RGB three components in the 4 adjacent pixels output by the CCD camera is 1:2:1.

[0030] A2. Rearrange the read-in image frame data so that the adjacent 4 pixels are the same color components when performing AMBCT t...

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Abstract

The invention discloses a method for carrying out real-time compressing as well as coding and decoding on a high definition video of Bayer format, which is implemented by transmitting the collected high definition Bayer format video information to a video processing module, and compressing the Bayer format high definition video information according to improved AMBCT algorithm; firstly separatingout a frame-to-frame step of an image during uncompressing, restoring a 1bit image matrix and an average value matrix according to a zonebit, restoring the image via coefficients and the correspondingzonebit, and finally re-arraying and interpolating the image matrix to obtain a standard RGB format video signal. The invention depends on digital image processing technology, has the characteristicsof high compression efficiency, simple and high efficient software and hardware realization, satisfactory video information processing real-time requirement, and guaranteed quality of video information after compression, wherein the improved AMBCT algorithm has the characteristics of fast speed and high compression efficiency, the requirement on transmission bandwidth is lowered, and the invention is suitable for occasions needing real-time compressing and transmitting video information.

Description

1. Technical field [0001] The present invention relates to a method for real-time compression and encoding and decoding of high-definition video signals in Bayer format, specifically aiming at the characteristics of Bayer format images, using embedded technology and digital image processing technology to complete real-time compression and decompression of video signals , while meeting the real-time requirements of video signal processing, it also ensures the quality of the video signal. 2. Background technology [0002] Real-time video processing technology is widely used in various fields, such as road monitoring, automation management, etc., and plays an important role in these fields, but it also faces some technical bottlenecks, such as embedded processor performance needs to be improved, transmission issues such as limited bandwidth. As a result, the video signal processing cannot be done in real time to a certain extent, and the resolution of the image is limited. Thi...

Claims

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Application Information

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IPC IPC(8): H04N11/04H04N11/24
Inventor 袁杰陆保国王惠
Owner NANJING UNIV
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