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Spatio-Temporal Prediction for Fast Motion Vector Estimation in Video Coding
No full textthis paper, we propose a new fast algorithm to estimate motion vectors (MVs) in video coding applications; it is based on the correlation which is present in the MV fields. To evaluate the MV of each block of a coded frame, information on MVs of adjacent blocks is used to give a first MV estimate, which is then refined by performing block matching within a very small search area. A final analysis on the reconstruction error assures high image quality, close to that of the standard full-search algorithm, with the advantage of a significantly reduced computational complexity. Simulations on a H.263 video coder show the validity of the proposed approach. Area: Telecommunication systems Corresponding author: Sergio Carrato D.E.E.I., University of Trieste, v. Valerio, 10, 34100 Trieste, Italy tel.: +39.40.6767147; fax: +39.40.6763460 e-mail: [email protected] 1 Introductio
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