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

Low-power high-performance video coding method for implementing motion estimation

A technology of motion estimation and horizontal direction, applied in the direction of digital video signal modification, TV, electrical components, etc., can solve the problem of increasing memory bandwidth and so on

Inactive Publication Date: 2013-01-16
ACER INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when performing motion estimation, in order to perform data comparison operations, the required candidate block data in the search window of the reference frame will be transferred between the external memory 220 and the internal memory 212 through the external bus 230, thereby greatly increasing the memory bandwidth.

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
  • Low-power high-performance video coding method for implementing motion estimation
  • Low-power high-performance video coding method for implementing motion estimation
  • Low-power high-performance video coding method for implementing motion estimation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] FIG. 3 is a schematic diagram of performing motion estimation with a helical search algorithm according to an embodiment of the present invention. For a current block 302 with a size of N×N in the current frame 300, the surrounding frame corresponding to the position of the current block 302 in the reference frame 310 A search window 320 is displayed, and the block most similar to the current block 302 is found in the search window 320 . The comparison method adopted in this embodiment is to calculate the SAD value of each candidate block in the current block 302 and the search window 320, and its calculation method is as follows:

[0044] SAD = Σ i = 0 N - 1 Σ j = 0 N - 1 ...

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 provides a method for implementing motion estimation. The method comprises the steps that a current block is selected in a current frame, the current block is compared with an initial reference block in a reference frame to obtain an initial comparison parameter, wherein the position of the initial reference block in the reference frame corresponds to the position of the current block in the current frame, a prediction search window corresponding to the current block is determined according to the comparison result, the blocks in the search window are compared and the comparisonparameter of the reference block and the current block in the search window are computed so as to search a corresponding reference block matched with the current block.

Description

technical field [0001] The present invention relates to a method for performing motion estimation, and more particularly to a method for performing motion estimation that can reduce memory capacity and bandwidth. Background technique [0002] As the application of multimedia technology becomes more and more popular, the requirement of video compression technology becomes more and more important. Many video compression technical standards have been proposed one after another, and the current mainstream specifications include MPEG-4 and H.264 / AVC. The basic principles of these standards are mainly to remove redundant data in image data, so as to reduce image storage space or image transmission volume. Motion Estimation is a very important part of video coding, which utilizes the similarity between consecutive frames to remove temporal redundancy of data, thereby achieving the purpose of data compression. [0003] FIG. 1 is a schematic diagram of a block comparison algorithm ...

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): H04N7/26H04N19/57
Inventor 黄士嘉郭斯彦
Owner ACER INC