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Title: Combining multiple-candidate search with one-bit transform for motion estimation
Authors: Wong, Hon Wah
Au, Oscar C.
Tourapis, Alexandros
Keywords: Motion estimation
One-bit transform
Motion vector
Issue Date: 1998
Citation: Proceedings International Conference on Consumer Electronics, ICCE 1998, 2-4 June 1998, p. 134-135
Abstract: Motion estimation using one-bit information (1BT) to represent a pixel or a group of pixels becomes popular in recently years [1-2] as the distortion function between the reference block and the search block can be computed very efficiently. In [1], each frame is filtered and compared with the original frame to extract the edge information. However, its performance is not good enough as it degrades the predicted image by 1dB on the average comparing with full search. In this paper, we improve the performance using the results of one-bit transform as the initial estimate of the motion vector, and use re-examination strategies to find the final motion vector. Experiment results show that the proposed method improves the peformance of the one-bit transform by up to 0.9 dB and outperforms many other motion estimation algorithms such as the Three-Step Search (3SS), New Three-Step Search (N3SS) and the Four-Step Search (4SS).
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