Title :
Variable block size wavelet video coding
Author :
Silva, Vitor ; De Sá, Luís
Author_Institution :
Dept. de Engenharia Electrotecnica, Coimbra Univ., Portugal
Abstract :
A new and efficient video coding algorithm is described. It is based on the wavelet decomposition of video signals using orthonormal and biorthogonal filter banks. The motion compensated error images are represented by variable size blocks. To improve the coding efficiency and to minimize the border effects associated to the wavelet transform, a new quadtree based merging algorithm was developed. The results of two coding scenarios are discussed
Keywords :
filtering theory; merging; motion compensation; quadtrees; transform coding; video coding; wavelet transforms; biorthogonal filter banks; border effects minimisation; coding efficiency; motion compensated error images; orthonormal filter banks; quadtree based merging algorithm; variable block size; video coding algorithm; video signals; wavelet decomposition; wavelet transform; Compaction; Filter bank; Image analysis; Image coding; Merging; Pixel; Prototypes; Quantization; Telecommunications; Video coding;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467223
