Curvature analysis approach to shape coding using B-splines
Janez Zaletelj, Jurij Franc Tasič · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2000
This work presents an algorithm for efficient shape coding using cubic B-splines. In the framework of object-based layered coding of image sequences, shape information is essential for content-based access to video objects, and its efficient encoding needs to be investigated. We present a rate and distortion controlled algorithm for vide object shape approximation by variable number of cubic B-spline segments and motion compensated inter-frame coding of B-spline control points. Rate-distortion efficiency of the proposed algorithm is compared to MPEG-4 context arithmetic encoding and two stage motion compensated chain coding.