Accelerated predictive-transform

Details Accelerated predictive-transform Accelerated predictive-transform

2006-05-16

2006-05-16

Dang, Duy M. (Department: 2627)

Image analysis

Image compression or coding

Transform coding

C382S238000

Reexamination Certificate

active

07046856

ABSTRACT:
The present invention is drawn to a method for digital image modeling in which the digital image is divided into digital image blocks. First, a coder input vector of the digital image blocks is received. Second, a coefficient vector is approximated, each coefficient or coefficient vector corresponding to one of the digital image blocks. The approximating step further comprises generating a transformation matrix that yields a coefficient vector from a product of the coder input vector and decomposing the transformation matrix into a product of multi-diagonal or sparse unitary transformation matrixes and an energy sequencer unitary transformation matrix.

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