Wavelets: • Mathematical representation tool • Decomposes into layers corresponding to featu at different scales • Particularly useful for signal analysis (images, sonar data, …)
Wavelets:
Jan 21, 2016
Wavelets:. Mathematical representation tool. Decomposes into layers corresponding to features at different scales. Particularly useful for signal analysis (images, sonar data, …). Compression. Compression Ratio: 3.3%. Compression Ratio: 10%. Fast adapted retrieval. Wavelets:. - PowerPoint PPT Presentation
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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, …)
Compression
Compression Ratio: 3.3%
Compression Ratio: 10%
Fast adapted retrieval
• Representation specially suitable for images
• Compression
• Zoom-in capability
Wavelets:
Courtesy of Chris BrislawnLANL
original wavelet reconstructioncompression ratio=18:1
Courtesy of Chris BrislawnLANL
another sample
Courtesy of Chris BrislawnLANL
zoom-in
Courtesy of Chris BrislawnLANL
original compressed using waveletscompression ratio=15:1
Courtesy of Chris BrislawnLANL
compressed using waveletscompression ratio=19:1
compressed using JPEGcompression ratio=19.6:1
Fingerprints:
• Digitally stored
• Compressed
- fast retrieval
- fast search
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