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An improvement to MBASIC algorithm for 3-D motion and depth estimation

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3 Author(s)
Bozdagi, G. ; Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey ; Tekalp, A.M. ; Onural, L.

In model-based coding of facial images, the accuracy of motion and depth parameter estimates strongly affects the coding efficiency. MBASIC (model-based analysis-synthesis image coding) is a simple and effective iterative algorithm recently proposed by Aizawa et el. (see Signal Processing: Image Communication, no.1, p.139-52, 1989) for 3-D motion and depth estimation when the initial depth estimates are relatively accurate. In this correspondence, we analyze its performance in the presence of errors in the initial depth estimates and propose a modification to MBASIC algorithm that significantly improves its robustness to random errors with only a small increase in the computational load

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Image Processing, IEEE Transactions on  (Volume:3 ,  Issue: 5 )