Adapted wavelet analysis from theory to software
Adapted wavelet analysis from theory to software
Wavelets and subband coding
Techniques and standards for image, video, and audio coding
Techniques and standards for image, video, and audio coding
Efficient scalar quantization of exponential and Laplacian random variables
IEEE Transactions on Information Theory
The minimum description length principle in coding and modeling
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Entropy-based algorithms for best basis selection
IEEE Transactions on Information Theory - Part 2
An embedded still image coder with rate-distortion optimization
IEEE Transactions on Image Processing
Optimal bit allocation and best-basis selection for wavelet packets and TSVQ
IEEE Transactions on Image Processing
Fast adaptive wavelet packet image compression
IEEE Transactions on Image Processing
New image compression techniques using multiwavelets and multiwavelet packets
IEEE Transactions on Image Processing
Adaptive wavelet packet basis selection for zerotree image coding
IEEE Transactions on Image Processing
Best wavelet packet bases in a rate-distortion sense
IEEE Transactions on Image Processing
A hybrid method for MRI brain image classification
Expert Systems with Applications: An International Journal
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This paper introduces an efficient image-coding algorithm using wavelet packets. The algorithm combines the top-down search approach with an operational rate-distortion (R-D) cost function to select the best wavelet packet basis at low-computational cost. The proposed method jointly optimizes the best-basis selection, coefficient ''thresholding'' and quantizer selection within the minimum description length (MDL) framework to develop a wavelet packet image coder named as JTQ-WP. We present results to verify the usefulness and versatility of this adaptive image coder both on medical US-images and natural images. The experimental results show that the joint optimization has a dramatic effect on the compression performance of medical ultrasound images. To further demonstrate the potential performance of the proposed method in comparison with the current state-of-the-art image coding algorithms, the results on Barbara image are also presented. The results show a coding gain of 0.91 dB over the benchmark wavelet-coding algorithm, SPIHT, on the Barbara image at a bit-rate of 0.25 bpp.