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AVS fast schema selection method and device

A mode selection and mode technology, applied in the field of video coding, can solve the problems of not fully considering the time correlation of image sequences, large and complex calculations, etc., to ensure the performance of encoding rate distortion, improve encoding speed, and improve self-adaptation sexual effect

Active Publication Date: 2009-05-06
HISENSE GRP HLDG CO LTD
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Problems solved by technology

When this method uses pixel values ​​for region division, the calculation amount is relatively complicated and the calculation amount is large; and the spatial correlation is mainly considered, and the temporal correlation between image sequences is not fully considered, especially for the encoding effect of image sequences with violent motion. Poor, encoding performance could be improved

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  • AVS fast schema selection method and device
  • AVS fast schema selection method and device
  • AVS fast schema selection method and device

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Embodiment Construction

[0037] In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The following descriptions are only some embodiments of the present invention. For those of ordinary skill in the art, Other implementations of the present invention can also be obtained according to these embodiments without any creative effort.

[0038] The technical solution provided by the embodiment of the present invention is mainly based on the characteristics of the video sequence itself. For sequences with different signal characteristics (including sequences with violent motion and complex textures), the coding rate can be significantly improved under the premise of ensuring the coding rate-distortion performance. speed. The key technology in Embodiment 1 of the present invention will be described below.

[0039] An AVS fast mode select...

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Abstract

The present invention discloses an AVS fast mode selection method and device, relating to the field of video encoding, which can significantly improve the coding speed simultaneously guarantee the encoding rate distortion performance, and can obtain better encoding results specifically to image sequences having intense movement and complex texture. The technical scheme provided by the invention includes: dividing the candidate models of the current macro-block into sets including a preference mode set, a secondary mode set, and a post-election mode set; searching in the preference mode set, the secondary mode set, and the post-election mode set in sequence, and selecting an optimum mode for coding the current macro block. The invention is applicable to occasion for performing video coding.

Description

technical field [0001] The invention relates to the field of video coding, in particular to an AVS fast mode selection method and device. Background technique [0002] With the development of digital video technology, many digital audio and video compression standards have appeared in the world in recent years. AVS (Audio Video Coding Standard) is an audio and video coding standard independently formulated by my country with independent intellectual property rights. [0003] The AVS video standard adopts a series of technologies to achieve high-efficiency video coding, including intra-frame prediction, inter-frame prediction, transformation and quantization, and entropy coding. Inter prediction uses block-based motion vectors to eliminate redundancy between images; intra prediction uses spatial prediction mode to eliminate redundancy in images; then transforms and quantizes prediction residuals to eliminate visual redundancy in images; finally, Motion vectors, prediction m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N7/26H04N19/12H04N19/50
Inventor 刘微游娜彭玉华裴雷焦梅
Owner HISENSE GRP HLDG CO LTD
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