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Encoding method and decoding method for high sharpness video super strong compression

A compression coding and clear technology, applied in the decoding field of decompression coding, can solve the problem of low spatial resolution, and achieve the effect of wide adaptability and scalability

Inactive Publication Date: 2006-06-07
BEIJING K CITY HIGH DEFINITION ELECTRONICS TECH
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Problems solved by technology

[0032] (5) The higher the decomposition level, the lower the spatial resolution corresponding to the wavelet coefficients;

Method used

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  • Encoding method and decoding method for high sharpness video super strong compression
  • Encoding method and decoding method for high sharpness video super strong compression
  • Encoding method and decoding method for high sharpness video super strong compression

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Embodiment Construction

[0060] Referring to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0061] (compression encoding method)

[0062] Video moving images are composed of one frame of one still image, available frame rates include 23.98 frames / s, 24 frames / s, 25 frames / s, 29.97 frames / s, 30 frames / s, 50 frames / s, 59.94 frames / s seconds, 60 frames per second.

[0063] High-definition video super compression coding method of the present invention, the block diagram of its compression process is as follows figure 1 As shown, the video signal (frame-by-frame image) can be divided into three parallel channels to enter the encoder:

[0064] Step 1: Divide each frame of the first video signal into several blocks. The blocks can be rectangular or diamond-shaped. Practice shows that the diamond-shaped video object shape description type is more suitable for image segmentation. Perform wavelet transform on each block, convert the spatial domain to t...

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Abstract

This invention discloses a high resolution video ultra strong compression coding / decoding method. Said method includes decomposition of input video and extracting character by small wave change, ordering, quantizing, compressing quantized result in frame and transmitting, separating object from image, predicting next frame, comparing predicted result with input video of next frame, removing same object to obtain residual signal to obtain higher compression ratio, said residual signal used as input video for next circulation. Said invention has higher compression ratio and safety.

Description

technical field [0001] The invention relates to a video information compression encoding method, and also relates to a decoding method for decompressing the compression encoding. Background technique [0002] With the development of high-definition television HDTV technology, computer technology, and digital codec technology, the digital audio and video industry led by digital TV has become one of the country's pillar industries. [0003] The most important algorithm in the digital audio and video industry is the encoding algorithm, especially the video encoding algorithm with high compression ratio. An excellent image algorithm will bring about great changes in the entire industry, and it is also a milestone in the development of the industry. [0004] MPEG-1 was released in 1992. Its design target is an industrial-grade standard. It can compress images with standard resolution. The transmission rate is 1.5Mbps. The video quality is basically equivalent to that of VHS. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/61H04N19/63
Inventor 许丰
Owner BEIJING K CITY HIGH DEFINITION ELECTRONICS TECH
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