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JBE, vol. 23, no. 1, pp.138-145, January, 2018
Motion Estimation Algorithm Using Variance and Adaptive Search Range for Frame Rate Up-Conversion
Songhyun Yu and Jechang Jeong
C.A E-mail: firstname.lastname@example.org
In this paper, we propose a new motion estimation algorithm for frame rate up-conversion. The proposed algorithm uses the variance of errors in addition to SAD in motion estimation to find more accurate motion vectors. Then, it decides which motion vectors are wrong using the variance of neighbor motion vectors and the variance between current motion vector and neighbor’s average motion vector. Next, incorrect motion vectors are corrected by weighted sum of eight neighbor motion vectors. Additionally, we propose adaptive search range algorithm, so we can find more accurate motion vectors and reduce computational complexity at the same time. As a result, proposed algorithm improves the average peak signal-to-noise ratio and structural similarity up to 1.44 dB and 0.129, respectively, compared with previous algorithms
Keyword: Frame rate up-conversion, motion estimation, adaptive search range
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