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An improved BPM motion estimation algorithm

Author: LiJinWei
Tutor: TongJiaZuoï¼›ChenGengSheng
School: Fudan University
Course: Microelectronics and Solid State Electronics
Keywords: Motion Estimation Full search algorithm Fast Search Algorithm BPM search algorithm Bit-plane
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 19
Quote: 0
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Abstract


The digital video is constituted by a continuous digital image , between adjacent two images for a continuous video signal in terms of having a strong correlation , the motion estimation algorithm is the use of this correlation adjacent to the compressed video sequence the algorithm of the redundant information in the image between the video signal in the time domain compression processing . The motion estimation as a digital video signal to one of the compression methods , widely used in a variety of video standards , including MPEG-1, MPEG-2, MPEG-4, H.263, H.264 , etc. . Motion estimation is a key step in the video encoding , the computational complexity is low , a small amount of computation , motion estimation algorithms have significantly improved video coding efficiency . This article in traditional bit plane matching motion estimation algorithm (bit plane matching, abbreviated as BPM) based on the selection method of the threshold value , by adjusting the bit-plane conversion , improved method of calculation of the motion vector , and proposed an improved BPM algorithm . The proposed algorithm is compared with traditional BPM algorithm , you need to calculate the absolute error (sumof absolute differences, abbreviated as SAD) block number was reduced from 56.1% to 82.5% and 0.41% -7.13 % , to enhance the effect of the motion estimation . Meanwhile, the hardware structure of this paper, the classical 1D motion estimation for the bit-plane structure of the BPM algorithm characteristics , simplifies the motion estimation algorithm in the structure of the processing unit , improving systolic arrays organizational structure composed by a plurality of processing units so that it can simultaneously multiple analyte macroblock SAD calculation , good design and simulation test results , and to enhance the performance of a motion estimation algorithm and its hardware implementation .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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