Rapid interframe mode selection method based on rate-distortion cost and mode frequency

An inter-frame mode and rate-distortion technology, applied in the field of computer vision, can solve the problem of high computational complexity, achieve good results, reduce computational overhead, and improve adaptive ability.
CN101448159AInactive Publication Date: 2009-06-03BEIHANG UNIV
0 Cites 25 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2009-06-03
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention primarily utilizes the average value of the rate-distortion cost of various coded macroblocks to forecast whether the current macroblock is coded into a skip macroblock by comparing the relation between the rate distortion cost of the skip mode of a macroblock to be coded and the average value; and then the possible interframe coding mode assemble of the current macroblock to be coded is forecasted through checking the mode assemble of the adjacent macroblocks coded on time and space; the forecast begins form the most possible coding mode by using occurrence frequency of various coded macroblocks interframe coding modes; and in the forecasting process, whether to stop the forecasting process of the interframe coding mode ahead of time is decided by comparing the relation between the rate distortion cost value and the average rate distortion cost value of the mode. Under the condition that mode ergodicity is not performed, the invention directly forecasts and obtains the possible interframe coding mode assemble of the current coding block by utilizing the statistic information of the macroblock coding mode and the correlation of the coding mode among macroblocks.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a method for selecting an inter-frame encoding mode of a video image, in particular to a method for reducing the search and calculation overhead of skip macroblocks and inter-frame macroblocks, and improving the speed of inter-frame mode selection without sacrificing image quality. The method belongs to the field of computer vision technology. Background technique

[0002] Inter-frame prediction is a basic and key technology in the field of video and image processing, which has been applied in international coding standards such as H.261, H.263, H.264, MPEG-1, MPEG-2 and MPEG-4. Inter prediction is used to obtain the correlation between macroblocks in two images. The multi-mode inter-frame prediction method used in the latest international video coding standard H.264 has the advantages of wide application range and high prediction accuracy, and is an ideal inter-frame prediction method. The multi-mode inter-frame pred...

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