| Medical image compression by using three-dimensional wavelet transformation. | |
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MedLine Citation:
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PMID: 18215935 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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This paper proposes a three-dimensional (3-D) medical image compression method for computed tomography (CT) and magnetic resonance (MR) that uses a separable nonuniform 3-D wavelet transform. The separable wavelet transform employs one filter bank within two-dimensional (2-D) slices and then a second filter bank on the slice direction. CT and MR image sets normally have different resolutions within a slice and between slices. The pixel distances within a slice are normally less than 1 mm and the distance between slices can vary from 1 mm to 10 mm. To find the best filter bank in the slice direction, the authors use the various filter banks in the slice direction and compare the compression results. The results from the 12 selected MR and CT image sets at various slice thickness show that the Haar transform in the slice direction gives the optimum performance for most image sets, except for a CT image set which has 1 mm slice distance. Compared with 2-D wavelet compression, compression ratios of the 3-D method are about 70% higher for CT and 35% higher for MR image sets at a peak signal to noise ratio (PSNR) of 50 dB, In general, the smaller the slice distance, the better the 3-D compression performance. |
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Authors:
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J Wang; K Huang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on medical imaging Volume: 15 ISSN: 0278-0062 ISO Abbreviation: IEEE Trans Med Imaging Publication Date: 1996 |
Date Detail:
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Created Date: 2008-01-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8310780 Medline TA: IEEE Trans Med Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 547-54 Citation Subset: - |
Affiliation:
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Dept. of Radiol. Sci., California Univ., Los Angeles, CA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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