Signal compression and decompression

Details Signal compression and decompression Signal compression and decompression

2001-07-20

2009-08-04

Do, Anh Hong (Department: 2624)

Image analysis

Image compression or coding

C382S238000, C382S240000, C382S248000

Reexamination Certificate

active

07570817

ABSTRACT:
A method of data compression, for example for image or audio signals, comprises encoding the data using a transform such as a wavelet transform or DCT, and transmitting only a predefined number of the most significant bits for each coefficient. It has been found experimentally that while such a method may marginally decrease the signal to noise ratio, the subjective quality of the received image or audio signal is nevertheless enhanced.

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