Dotted image area detecting apparatus and dotted image area dete

Details Dotted image area detecting apparatus and dotted image area dete Dotted image area detecting apparatus and dotted image area dete

1998-03-02

2000-04-11

Rogers, Scott

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382195, 382201, 382205, G06K 946, G06K 956, G06T 500

Patent

active

060496355

ABSTRACT:
An apparatus for and a method of reliably detecting a very small dotted image area. A detecting area including a predetermined number of pixels including a target pixel is set. It is judged whether or not the detecting area belongs to a dotted image area on the basis of the number of edge pixels in the detecting area. Consequently, it is possible to detect edges peculiar to the dotted image area on the basis of a leading edge portion or a trailing edge portion of the density, to detect the very small dotted image area on the basis of the number of edge pixels.

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