Direction-Adaptive Discrete Wavelet Transform for Image Compression

We propose a direction-adaptive DWT (DA-DWT) that locally adapts the filtering directions to image content based on directional lifting. With the adaptive transform, energy compaction is improved for sharp image features. A mathematical analysis based on an anisotropic statistical image model is pre...

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Veröffentlicht in:	IEEE transactions on image processing Jg. 16; H. 5; S. 1289 - 1302
Hauptverfasser:	Chuo-Ling Chang, Girod, B.
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	New York, NY IEEE 01.05.2007 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:	Adaptive filters Algorithms anisotropic image model Anisotropic magnetoresistance Applied sciences Coding, codes Compaction Computer Simulation Data Compression - methods Data Interpretation, Statistical Detection, estimation, filtering, equalization, prediction directional lifting Discrete transforms Discrete wavelet transforms Exact sciences and technology Filtering Filtration Gain Hoisting Image coding Image compression Image Enhancement - methods Image Interpretation, Computer-Assisted - methods Image processing Information, signal and communications theory Mathematical analysis Mathematical model Miscellaneous Models, Statistical Noise levels Numerical Analysis, Computer-Assisted PSNR Reproducibility of Results Sensitivity and Specificity Signal and communications theory Signal processing Signal Processing, Computer-Assisted Signal, noise Telecommunications and information theory Testing wavelet transforms Filtering Image processing wavelet transforms Data compression Adaptive filters Image compression Adaptive filter Discrete wavelet transforms Adaptive method directional lifting anisotropic image model Image coding Wavelet transformation Mathematical analysis Statistical model Signal processing Content analysis Signal to noise ratio
ISSN:	1057-7149, 1941-0042
Online-Zugang:	Volltext
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