Subband coding method with wavelet transform for high efficiency

Details Subband coding method with wavelet transform for high efficiency Subband coding method with wavelet transform for high efficiency

1995-12-28

1998-10-20

Couso, Yon

Image analysis

Image compression or coding

Transform coding

382239, 348398, G06K 936

Patent

active

058259350

ABSTRACT:
A subband coding method for dividing a digital video signal into a plurality of frequency bands in vertical and horizontal directions in a spatial frequency region includes executing two-dimensional multilayer (n-layer) wavelet transform on each processing unit (field) of the digital video signal and rearranging data in those frequency bands to a plurality of data blocks each consisting of, for example, 8.times.8 pieces of data. Data in the data blocks are scanned in a predetermined order to generate a data train so that zero-runs easily occur.

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