Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Reexamination Certificate
2006-04-18
2006-04-18
Tran, Phuoc (Department: 2621)
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
C382S233000, C382S248000
Reexamination Certificate
active
07031534
ABSTRACT:
A xerographic apparatus, a printer, a printer server, and the like processes wavelet domain image data and includes means for receiving the wavelet domain image data representative of an input digital image. The wavelet domain image data may be formatted as a JPEG 2000 compressed file or other wavelet domain file including N levels of wavelet decompositions. An M-level extractor extracts an Mth level wavelet decomposition from the wavelet domain image data where M is <N. The extracted Mth level wavelet decomposition is a low resolution representation of the input digital image. An image enhancement system receives the extracted Mth level wavelet decomposition and derives an enhancement process such as a tone reproduction curve, a sharpness filter, and the like from the extracted Mth level wavelet decomposition. The enhancement process is used to enhance a higher resolution representation of the digital input image.
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patent: 6476805 (2002-11-01), Shum et al.
patent: 6757437 (2004-06-01), Keith et al.
Wavelets and Subband Coding, Vetterli and Kovacevic, Prentice Hall PTR (1995) (Book not enclosed).
Wavelets and Filter Banks, Strang and Nguyen, Wellesley-Cambridge Press (1996) (Book not enclosed).
Wavelet Basics, Y. T. Chan, Kluwer Academic Publishers (1995) (Book not enclosed).
Fay Sharpe Fagan Minnich & McKee LLP
Tran Phuoc
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