Showing papers by "Yücel Yemez published in 1997"
26 Oct 1997
TL;DR: An object-oriented codec for video transmission at very low bit rates is proposed and a context-based shape coding method which takes into account the image synthesis error as well as the geometric distortion is proposed.
Abstract: An object-oriented codec for video transmission at very low bit rates is proposed. The object motion is modeled by quadratic transform for which the coefficients are estimated by the nonlinear quasi-Newton method. The segmentation problem is put forward as a constrained optimization problem which interacts with the motion estimation process in the course of region growing. A context-based shape coding method which takes into account the image synthesis error as well as the geometric distortion, is also proposed. Quantitative and subjective performance results of the codec on various test sequences are included.
3 citations