전자공학회논문지S (Journal of the Korean Institute of Telematics and Electronics S)
- 제34S권9호
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- Pages.91-98
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- 1997
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- 1226-5837(pISSN)
블록 움직임 벡터의 검출을 위한 화소 간축 방법에 대한 연구
Pixel decimation for block motion vector estimation
- Lee, Young (Dept. of Electrical Eng. Korea Univ.) ;
- Park, Gwi-Tae (Dept. of Electrical Eng. Korea Univ.)
- 발행 : 1997.09.01
초록
In this paper, a new pixel decimation algorithm for the estimation of motion vector is proposed. In traditional methods, the computational cost can be reduced since only part of the pixels are used for motion vector calculation. But these methods limits the accuracy ofmotion vector because of the same reason. We derive a selection criteria of subsampled pixels that can reduce the probablity of false motion vector detection based on stochastic point of view. By using this criteria, a new pixel decimation algorithm that can reduce the prediction error with similar computational cost is presented. The simulation results applied to standard images haveshown that the proposed algorithm has less mean absolute prediction error than conventional pixel decimation algorithm.
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