Encoded data generation apparatus and a method, a program,...

Details Encoded data generation apparatus and a method, a program,... Encoded data generation apparatus and a method, a program,...

2004-04-30

2008-05-13

Tran, Phuoc (Department: 2624)

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

C382S248000

Reexamination Certificate

active

07373007

ABSTRACT:
An encoding process and a recompression process of encoded data are disclosed that appropriately select low-order bit planes and low-order sub bit planes, codes corresponding to which are not to be output. The low-order bit planes and low-order sub bit planes are selected based on an inverse value of the square root of the subband gain of inverse wavelet transform, such that the selected low-order bit planes and low-order sub bit planes are not encoded, or alternatively, are encoded, but later discarded during packet generation.

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patent: 6865291 (2005-03-01), Zador
patent: 05-227320 (1993-09-01), None
Nomizu, Yasuyuki, “Next-generation Image Encoding Method JPEG 2000,” Triceps, Inc., Feb. 13, 2001.
Katto, Jiro and Yasuda, Yasuhiko, “Performance Evaluation of Subband Coding and Optimization of Its Filter Coefficients,” Journal of Visual Communication and Image Representation, vol. 2, No. 4, Dec. 1991, pp. 303-313.
Nadenau, Marcus J. and Reichel, Julien, “Opponent Color, Human Vision and Wavelets for Image Compression,” Proceedings of the Seventh Color Imaging Conference, Scottsdale, Arizona, Nov. 16-19, 1999, IS&T, pp. 237-242.
Nadenau, Marcus J. et al., “Wavelet-Based Color Image Compression, Exploiting the Contrast Sensitivity Function,” IEEE Transactions on Image Processing, vol. 12, No. 1, Jan. 2003, pp. 58-70.

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