Optimum Subband Quantization Filter Design for Image Compression

Filter bank design for subband compression of ECG signals

This article considers lter banks for sub-band coding of discrete time electrocardiogram (ECG) signals. Two parallel FIR lter banks are optimized and compared with a classic tree-structured lter bank. The new lter banks give a decrease in signal distortion from 0.6 to 0.8 % PRD compared to the reference lter bank.

Design of Linear Phase Cosine Modulated Filter Banks for Subband Image Compression

This paper proposes to investigate a new class of M-band linear phase modulated lter banks. In particular we propose to investigate diierent methods for designing the prototype lter based on perceptual measures such as reduced image artifacts as well as more traditional measures such as coding gain and mean square diierence. Image compression at low bit rates typically introduces image artifact...

Lossless Subband Image Compression Using Integer Coeecient Filter Banks

A new class of two-channel lter banks having integer lter coeecients is proposed. The integer lter coeecients are obtained by maximizing for subband coding gain. The number of bits required to represent the subband samples are kept low through eecient nonlinear implementation techniques. Several integer coeecient lter banks are tested for lossless image compression. An octave-band (dyadic) freq...

طراحی بهینه فیلترهای ماسه ای optimum design of sand filter

چکیده ندارد.

Vector Quantization for Image Compression-Concept Quantization