Unlock instant, AI-driven research and patent intelligence for your innovation.

Intra-frame prediction mode selection method and its apparatus based on M algorithm

A technology of intra-frame prediction mode and prediction mode, which is applied in TV, electrical components, digital video signal modification and other directions, and can solve problems such as unrealizable and complex

Active Publication Date: 2010-06-02
SHANGHAI FULLHAN MICROELECTRONICS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the Viterbi Algorithm (Viterbi Algorithm) adopts an exhaustive search strategy, so it is usually the best in theory. However, due to its exhaustive search characteristics, it is often too complicated in the case of complex coding and joint decoding-channel equalization. can not achieve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intra-frame prediction mode selection method and its apparatus based on M algorithm
  • Intra-frame prediction mode selection method and its apparatus based on M algorithm
  • Intra-frame prediction mode selection method and its apparatus based on M algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] The flow of the intra-frame mode selection method and the implementation device structure of the present invention are applied to the H.264 real-time encoder in conjunction with the accompanying drawings and specific embodiments below.

[0067] Such as image 3 As shown, if the possible block intra prediction modes of each block starting from the first block are regarded as grid nodes, then the history of block intra prediction mode selection can be regarded as a path through the grid, and the branch from the node is the block For prediction mode cost, the mode selection method is the operation of searching the tree with the minimum metric Γ, that is, the path with the minimum total cost of the intra prediction mode of the block. The existing block intra prediction mode selection method selects the b extended branches of the current best path in each step of the search process, the branch metric λ, that is, the path with the smallest block intra prediction mode cost. A...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for selecting an intraframe prediction mode based on an M algorithm, and a device thereof. The device comprises an intraframe prediction device and a block-mode cost accounting and block reconfiguration device which are connected in sequence. The device of the invention is characterized by also comprising a data management device which is used for storing buffer data of reconstructed images and managing information of adjacent pixels and paths, and a path cost accounting and prediction mode selecting device. The method for selecting the intraframe prediction mode, which is disclosed by the invention, realizes a multi-path global search of the intraframe prediction mode of the block so as to reduce the possibility that the search with the best mode of the intraframe prediction mode of the block falls into the local minimum.

Description

technical field [0001] The invention belongs to the field of digital video processing, and relates to an intra-frame prediction mode selection method and an implementation device, in particular to an M-algorithm-based intra-frame prediction mode selection method and an implementation device. Background technique [0002] With the continuous development of the audio and video industry, the international requirements for audio and video codec technology are also getting higher and higher. Since the evolution of video coding technology, international standards for video coding technology represented by MPEG-4 AVC / H.264 have emerged, while my country has introduced the audio and video coding standard AVS (Advanced Audio-Video Coding Standard in Information Technology, advanced information technology audio and video coding). These audio and video coding standards can efficiently compress video signals with a huge amount of information while maintaining the subjective quality of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/50H04N19/593
Inventor 诸悦陈晓春李小飞
Owner SHANGHAI FULLHAN MICROELECTRONICS