Wavelet-based encoding method and wavelet-based encoding device

Details Wavelet-based encoding method and wavelet-based encoding device Wavelet-based encoding method and wavelet-based encoding device

2004-04-19

2008-09-23

Do, Anh Hong (Department: 2624)

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

C382S232000

Reexamination Certificate

active

07428340

ABSTRACT:
Input data, distributed along a time axis, is converted into data distributed along a frequency axis by the use of a frequency range dividing filter, and is subjected to scalar quantization performed by a compression circuit with different step numbers for different frequency ranges, so that data in a plurality of frequency ranges along the frequency axis is compressed.

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patent: 07-079433 (1995-03-01), None
patent: 411330975 (1999-11-01), None

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