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Author Gamba, Claudio ♦ Carrato, Sergio
Source CiteSeerX
Content type Text
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Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Video Coding ♦ Spatio-temporal Prediction ♦ Fast Motion Vector Estimation ♦ Final Analysis ♦ First Mv Estimate ♦ Carrato Ipl ♦ Video Coder ♦ Telecommunication System ♦ Computational Complexity ♦ Reconstruction Error ♦ Sergio Carrato D.e.e.i. ♦ Small Search Area ♦ Motion Vector ♦ Italy Tel ♦ Coded Frame ♦ Standard Full-search Algorithm ♦ Adjacent Block ♦ Mv Field ♦ High Image Quality ♦ Video Coding Application ♦ New Fast Algorithm
Abstract this 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: carrato@ipl.univ.trieste.it 1 Introduction
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study