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Introduction to wavelet-based compression of medical images.
Schomer DF, Elekes AA, Hazle JD, Huffman JC, Thompson SK, Chui CK, Murphy WA Jr.
Department of Diagnostic Radiology, University of Texas M. D. Anderson Cancer Center, Houston 77030, USA.
Radiographics. 1998 Mar-Apr;18(2):469-81
Medical image compression can significantly enhance the performance of picture archiving and communication systems and may be considered an enabling technology for telemedicine. The wavelet transform is a powerful mathematical tool with many unique qualities that are useful for image compression and processing applications. Although wavelet concepts can be traced back to 1910, the mathematics of wavelets have only recently been formalized. By exploiting spatial and spectral information redundancy in images, wavelet-based methods offer significantly better results for compressing medical images than do compression algorithms based on Fourier methods, such as the discrete cosine transform used by the Joint Photographic Experts Group. Furthermore, wavelet-based compression does not suffer from blocking artifacts, and the restored image quality is generally superior at higher compression rates.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Department of Diagnostic Radiology, University of Texas M. D. Anderson Cancer Center, Houston 77030, USA.
Radiographics. 1998 Mar-Apr;18(2):469-81
Medical image compression can significantly enhance the performance of picture archiving and communication systems and may be considered an enabling technology for telemedicine. The wavelet transform is a powerful mathematical tool with many unique qualities that are useful for image compression and processing applications. Although wavelet concepts can be traced back to 1910, the mathematics of wavelets have only recently been formalized. By exploiting spatial and spectral information redundancy in images, wavelet-based methods offer significantly better results for compressing medical images than do compression algorithms based on Fourier methods, such as the discrete cosine transform used by the Joint Photographic Experts Group. Furthermore, wavelet-based compression does not suffer from blocking artifacts, and the restored image quality is generally superior at higher compression rates.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
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