Wavelet inverse transform method and apparatus and wavelet...

Details Wavelet inverse transform method and apparatus and wavelet... Wavelet inverse transform method and apparatus and wavelet...

2005-11-22

2005-11-22

Wu, Jingge (Department: 2623)

Image analysis

Image compression or coding

Including details of decompression

C382S240000

Reexamination Certificate

active

06968086

ABSTRACT:
A wavelet inverse transform method includes a decoding object coefficient extracting step of extracting only coefficients necessary for decoding a specified area from wavelet transform coefficients, and a wavelet inverse transform step of inverse transforming coefficients extracted from the decoding object coefficient extracting step. The decoding object coefficient extracting step extracts transform coefficients not only inside the specified area but also those outside the specified area. This enables only an optional partial picture to be decoded without decoding the entire picture. A corresponding wavelet inverse transform device is also disclosed.

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patent: 6501861 (2002-12-01), Cho et al.
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