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Wavelets: Mathematical representation tool
Decomposes into layers corresponding to features at different scales Particularly useful for signal analysis (images, sonar data, …)
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Compression
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Compression Ratio: 3.3%
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Compression Ratio: 10%
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Fast adapted retrieval
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Wavelets: Representation specially suitable for images Compression
Zoom-in capability
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wavelet reconstruction compression ratio=18:1 original
Courtesy of Chris Brislawn LANL
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Courtesy of Chris Brislawn
another sample Courtesy of Chris Brislawn LANL
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Courtesy of Chris Brislawn
zoom-in Courtesy of Chris Brislawn LANL
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compressed using wavelets compression ratio=15:1
original compressed using wavelets compression ratio=15:1 Courtesy of Chris Brislawn LANL
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compressed using wavelets compression ratio=19:1
compressed using JPEG compression ratio=19.6:1 compressed using wavelets compression ratio=19:1 Courtesy of Chris Brislawn LANL
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Fingerprints: Digitally stored Compressed - fast retrieval
- fast search
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