Wavelet transform coding method

Details Wavelet transform coding method Wavelet transform coding method

1996-02-14

1997-08-12

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348403, H04N 730

Patent

active

056570856

ABSTRACT:
An improved coding performance for wavelet transform coding. The method comprises: two-dimensional wavelet transforming an input picture signal to output transform coefficients; two-dimensionally arranging the transform coefficients; quantizing the arranged transform coefficients; choosing a scanning pattern for the quantized transform coefficients based on the correlation between these coefficients; generating a one-dimensional signal series by scanning the transform coefficients after they are quantized according to a scanning pattern decided in the above step; coding the one-dimensional signal series; and, finally, terminating the coding of the signal series using a symbol indicating the end of scanning.

REFERENCES:
patent: 5014134 (1991-05-01), Lawton et al.
patent: 5107345 (1992-04-01), Lee
patent: 5315670 (1994-05-01), Shapiro
patent: 5321776 (1994-06-01), Shapiro
patent: 5396237 (1995-03-01), Ohta

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