Title :
Region coding using improved B-spline surface approximation
Author :
Pan, Jinhui ; Liao, Qingmin
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fDate :
1/20/2000 12:00:00 AM
Abstract :
A new arbitrary region coding algorithm using a B-spline surface is presented. Pixels in the coded region are regarded as valid image data, and the parameters of the B-spline surface are calculated under certain optimisation criteria. Instead of the traditional least squares error (LSE) criterion, a least squares weighted error (LSWE) criterion is used as the approximation criterion. Simulation results show that the LSWE approach is much better for region coding than the LSE approach
Keywords :
image coding; least squares approximations; optimisation; splines (mathematics); B-spline surface approximation; LSWE criterion; approximation criterion; least squares weighted error criterion; optimisation criteria; region coding algorithm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000186
