Pixel block correlation process

Details Pixel block correlation process Pixel block correlation process

1996-06-04

1998-07-21

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Auxiliary signal

382107, 348154, 348155, 348430, 348412, H04N 1415

Patent

active

057841756

ABSTRACT:
A method of correlating transformation blocks between video frames for a block matching motion estimation process utilizes redundancy inherent in correlating pixel blocks to significantly reduce the processing resources required to perform the correlation. The method includes defining for the transformation blocks subsets of multiple pixels. In video frames that include pixels arranged as rows and columns of pixels, for example, the subsets can include columns of pixels in the transformation blocks. Correlations are obtained and stored for the transformation block subsets. Many of the correlations for the transformation block subsets of a transformation block match the correlations for the transformation block subsets of adjacent transformation blocks. Such matching correlations are retrieved rather than being recalculated as in conventional correlation methods.

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