Coordinate transformation method for binary image

Details Coordinate transformation method for binary image Coordinate transformation method for binary image

1996-03-20

1998-10-06

Tran, Phuoc

Image analysis

Image segmentation

Region labeling

382293, 382296, G06K 934

Patent

active

058189629

ABSTRACT:
A binary image coordinate transformation method can simplify the transformation processing for those portions consisting of pixels having the same single color value, thereby increasing the processing speed of binary image transformation overall. The original image is divided into a plurality of sub-regions. For each sub-region, it is detected whether or not the sub-region consists of pixels having the same color value of two color values of a binary image. The post-transformed image is divided into a plurality of sub-blocks. For each sub-block, all the sub-regions containing pixels corresponding to those pixels included in a sub-block are detected. When it is determined that the all the detected sub-regions corresponding to the sub-block have the same color value, the sub-block of the post-transformed image is covered with that single color in one go.

REFERENCES:
patent: 4783829 (1988-11-01), Miyakawa et al.

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