Title :
A fixed-rate vector quantizer based on pyramid-bounded integer lattices for image compression
Author :
Yeo, Boon-Lock ; Yeung, Minerva M. ; Sarkar, Sandip
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
Proposes a low-complexity fixed-rate vector quantizer for DCT transformed images based on the packing of scalar quantized DCT coefficients into pyramid-bounded integer lattices. A closed form expression for the size of pyramid-bounded integer lattices is derived and a method of bit-rate allocation to the various coefficients is described. The proposed scheme is simple and has performed well for various bit rates
Keywords :
computational complexity; discrete cosine transforms; image coding; vector quantisation; DCT transformed images; bit-rate allocation; closed form expression; fixed-rate vector quantizer based; image compression; packing; pyramid-bounded integer lattices; scalar quantized DCT coefficients; Bit rate; Buffer storage; Discrete cosine transforms; Image coding; Image storage; Laplace equations; Lattices; Rate distortion theory; Rate-distortion; Vector quantization;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413380
