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Dispatching licence transmitting method in radio communication system

A technology of video image and coding method, which is applied in the field of video image coding, and can solve the problems of complex transformation matrix elements, complex transformation calculation processing and quantization processing, etc.

Inactive Publication Date: 2008-08-13
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The 2D 8×8DCT-like integer transformation method given in literature [1], although its transformation performance is relatively close to DCT transformation, its transformation matrix elements are still relatively complex, and the transformation calculation process and quantization process are also relatively complicated.

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  • Dispatching licence transmitting method in radio communication system
  • Dispatching licence transmitting method in radio communication system
  • Dispatching licence transmitting method in radio communication system

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0036] Such as image 3 and Figure 4 Shown, be that the present invention carries out the schematic diagram and flow chart that video image is coded and processed, as can be seen from the figure, the present invention mainly comprises the following steps:

[0037] a. The input video image is divided into 16×16 macroblocks, and intra-frame pixel prediction and compensation are carried out to the I-frame image, and inter-frame motion estimation and motion compensation are carried out to the P-frame image to obtain prediction difference data;

[0038] b. The converter transforms the input prediction difference data to obtain transform coefficients;

[0039] c. Perform quantization and entropy coding processing on the transformation coefficients, and transmit the coded code stream to the receiving end;

[0040] d. The receiving end perfor...

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Abstract

A video code method is first of all to process a macroblock of an image with pretest and compensation, then a process of 8X8DCT-like integral conversion to the pretested D-value and a process of quantization and mean information content coding to the conversion quotients separately. The method applies a new 8X8 DCT-like integral conversion method and related inverse transformation, quantization and inverse quantization, its conversion matric elements are rather simple relating to additive and multiply operations only, its performance is closes to 8X8DCT.

Description

technical field [0001] The invention relates to the field of video processing, in particular to a video image encoding method. technical background [0002] At present, the technology in the video field is advancing by leaps and bounds, and there are many technical solutions for video coding. However, because the cosine transform has good decorrelation performance and is easy to implement quickly, it has been widely used in the field of video coding. The existing Video compression standards MPEG-1, MPEG-2, MPEG-4 (Part 2), H.261, and H.263 are all based on 8×8 discrete digital cosine transform (8×8DCT). The general processing frame diagram is as follows: figure 1 shown. [0003] H.263 encoding compression framework such as figure 2 As shown, "T" refers to the 8×8 DCT transformation of image data or prediction difference data. [0004] The general representation of the cosine transform is: [0005] F ( u ) ...

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Application Information

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IPC IPC(8): H04N7/32H04N7/26H04N19/61H04N19/625
Inventor 熊联欢
Owner TENCENT TECH (SHENZHEN) CO LTD