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Method for rapidly determining inter-frame prediction mode in HEVC standard based on Hough conversion

A standard and mode technology, applied in image data processing, instruments, electrical components, etc., can solve the problems of increasing HEVC coding complexity, increasing the time to determine the optimal prediction mode, and large computational load.

Active Publication Date: 2014-07-02
ZHEJIANG NORMAL UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Here, the RDO process needs to calculate the distortion after encoding and decoding of each candidate mode, so the calculation amount is very large
Since there are many optional intra-frame prediction modes in HEVC, the determination process of its intra-frame mode has great computational complexity and is very time-consuming.
[0006] In summary, with the increase in the number of optional prediction modes in HEVC, although the prediction accuracy and coding efficiency are improved, the coding complexity of HEVC is also greatly increased.
Thus, the time to determine the optimal intra-frame prediction mode is greatly increased

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  • Method for rapidly determining inter-frame prediction mode in HEVC standard based on Hough conversion
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  • Method for rapidly determining inter-frame prediction mode in HEVC standard based on Hough conversion

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Embodiment Construction

[0057] Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail: present embodiment implements under the premise of the technical scheme of the present invention, has provided detailed implementation and specific operation process, but protection scope of the present invention is not limited to the following the embodiment.

[0058] From attached figure 1 It can be seen from the figure that the original HEVC intra prediction has many candidate modes, and determining a more optimized mode has a relatively large computational complexity.

[0059] The present invention utilizes the C++ language on the basis of the HM4.0 program of HEVC, and utilizes the OpenCV function library to realize and experiment the proposed method.

[0060] as attached figure 2 As shown, the method for reducing the computational complexity of its intra prediction of the present invention comprises the following steps:

[0061] Step 1: For the curre...

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Abstract

The invention discloses a method for rapidly determining an inter-frame prediction coding mode in the latest national video compression standard, namely, the HEVC standard. The method includes the steps of firstly, conducting edge detection and Hough conversion on a current PU; secondly, conducting statistic analysis on the tangent value of the direction angle of a detected straight line so as to extract the most possible edge direction of the current PU according to the heuristic type information, optimally selecting candidate prediction modes so as to determine the MPM by conducting detection through the code rate and RMD process, and determining the final coding mode by conducting detection through the code rate and RDO process. Experiments show that the running speed of the HEVC can be increased by more than 20% according to the method.

Description

technical field [0001] The present invention relates to a method for speeding up the running speed of HEVC, the latest international compression standard in the field of video coding, and in particular to a method for speeding up the determination of the optimal coding mode of an intra-frame coding block by using technologies such as Hough transform Methods. Background technique [0002] HEVC (High Efficiency Video Coding) is the latest international video coding standard. It is jointly formulated by ISO / IEC Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group (VCEG). It is a high-performance video coding standard following H.264 / AVC. Its encoding efficiency is more than 50% higher than that of H.264. HEVC still adopts the hybrid coding framework of prediction and transformation. Compared with the previous technology, the technology in this framework has not changed much, although the content and process of the general coding framework have not changed...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/11G06T7/00
Inventor 端木春江董朵
Owner ZHEJIANG NORMAL UNIVERSITY