Title :
Indexing the output points in a lattice based vector quantizer
Author :
Khataie, Manijeh ; Soleymani, M.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
A new method for indexing the codewords of a lattice based vector quantizer (LBVQ) is presented. With this method, a codebook with a large number of lattice points can be selected. As a result, the quality of the compressed image can be very high. For some images, our methods shows up to a 1.5 dB improvement in comparison with JPEG. This method is suitable for applications with moderate to high vector dimensions
Keywords :
data compression; discrete cosine transforms; image coding; transform coding; vector quantisation; DCT; LBVQ; codebook; image coding; image compression; lattice based vector quantizer; output points indexing; Bit rate; Hypercubes; Image coding; Indexing; Laplace equations; Lattices; Probability; Shape; Source coding; Transform coding;
Conference_Titel :
Electrical and Computer Engineering, 1995. Canadian Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2766-7
DOI :
10.1109/CCECE.1995.528097
