Title :
Optimized subband coding of images
Author :
Park, Kyu Sik ; Hong, Sung Chan ; Kim, Hyeong Kyo
Author_Institution :
Dept. of Inf. & Telecommun., Sangmyung Univ., South Korea
Abstract :
This paper presents recent results in analysis and design of optimum two dimensional (2D) filter banks for subband coding of images in the presence of quantization noise. General M-band 2D separable filter banks are considered. The quantization effects in two dimensional subband coding system is analyzed by employing the polyphase decomposition technique of the subband filter bank and using the gain-plus-additive noise model for the quantizer. The mean square (MS) quantization error due to the quantizer if then calculated at the system output. This mean square error (MSE) serves as the measure in the optimum design and evaluation of subband filter banks. Numerical design examples with orthonormal and biorthonormal constraints on the subband filter banks are shown and tested with actual LENA image
Keywords :
image coding; quantisation (signal); two-dimensional digital filters; LENA image; gain-plus-additive noise model; mean square error; optimum design; polyphase decomposition; quantization noise; subband coding; two dimensional filter bank; Additive noise; Bit rate; Channel bank filters; Codecs; Filter bank; Finite impulse response filter; Image coding; Lattices; Noise figure; Quantization;
Conference_Titel :
Circuits and Systems, 1996., IEEE Asia Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-3702-6
DOI :
10.1109/APCAS.1996.569209
