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Rapid interframe mode selection method and device for AVS (Advanced Audio Video Coding Standard) coder

An inter-frame mode and encoder technology, applied in the field of digital video encoding and decoding, can solve problems such as reducing hardware implementation complexity, and achieve the effects of reducing hardware implementation complexity, meeting real-time requirements, and strong robustness

Active Publication Date: 2012-09-19
PEKING UNIV
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Problems solved by technology

[0004] The technical problem solved by the present invention is how to significantly reduce the complexity of hardware implementation under the premise of ensuring high rate-distortion performance

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  • Rapid interframe mode selection method and device for AVS (Advanced Audio Video Coding Standard) coder
  • Rapid interframe mode selection method and device for AVS (Advanced Audio Video Coding Standard) coder
  • Rapid interframe mode selection method and device for AVS (Advanced Audio Video Coding Standard) coder

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Embodiment Construction

[0027] Refer to the following figure 1 -6 An embodiment of the present invention will be described.

[0028] In order to make the above objects, features and advantages more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] refer to figure 1 , is a flow chart of the fast inter-frame mode selection algorithm of the present invention. Specifically include the following steps:

[0030] Mode selection initialization step S100, during the initialization process, configure the required parameters for mode selection, such as figure 1As shown, the parameters that need to be configured are: encoding frame type, quantization step size; execution process S101, according to the extracted original pixel value, the size of MLEP, HEP and VEP in each macroblock can be counted; according to the decision condition S102 , determine the branch of mode selection, if MLEP is not greate...

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Abstract

The invention discloses a rapid inter-frame mode selection method for an AVS (Advanced Audio Video Coding Standard) coder. The method comprises the following steps of: preselecting an optimal mode from a 16*16 mode, a 16*8 mode, a 8*16 mode and a 8*8 mode by virtue of a vision perception judging model and pixel point edge information; breaking through the dependence on data of interframe mode selection by virtue of a rapid interframe mode selection algorithm facilitating the realization of hardware to ensure that the interframe mode selection does not need to wait the relevant reconstruction data and becomes the premise for realizing an efficient interruption-free mode selection stream line; designing 5-level stream algorithm which can be realized oriented at the hardware and is capable of efficiently calculating rate distortion cost values to allow the application and popularization of the practical hardware for the interframe mode selection on the basis of rate distortion cost values to be possible; and finally, determining an optimal mode according to cost values of three candidate modes including a preset optimal mode, a direct mode and an intra mode. The invention also discloses an AVS interframe mode selection device. According to the invention, the coding property of the hardware coder is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of digital video encoding and decoding, in particular to an AVS encoder fast inter-frame mode selection method and device. Background technique [0002] Video compression technology occupies an important position in multimedia and its transmission system. With the continuous development of multimedia technology, efficient compression technology has become a hot research topic. The AVS (Advanced Audio Video Coding Standard) standard is proposed by the China Digital Audio and Video Codec Technology Standard Working Group (AVS Working Group for short), a digital audio and video codec technology standard with independent intellectual property rights. AVS is equivalent to H.264 in terms of encoding performance, and the algorithm complexity is obviously lower than H.264, so it has become a very competitive force in the field of digital media. Regardless of AVS or H.264, rate-distortion optimization (RDO) plays a ...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/34H04N19/103
Inventor 贾惠柱李帅祝闯解晓东高文
Owner PEKING UNIV
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