Identification, characterization, and segmentation of Halftone o

Details Identification, characterization, and segmentation of Halftone o Identification, characterization, and segmentation of Halftone o

1989-12-08

1992-07-14

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 55, 358456, G06K 934

Patent

active

051310490

ABSTRACT:
A method for creating a mask for separating halftone regions in a binary image from other regions comprises: constructing a seed image that includes pixels only in halftone regions and at least one pixel in every halftone region (67); constructing a clipping mask that covers in a connected manner all ON pixels in halftone regions (70); and filling the seed while clipping to the mask (72). Thresholded reductions and morphological operations are preferred.

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