Graphic contour extracting method, pattern inspecting...

Image analysis – Applications – Manufacturing or product inspection

Reexamination Certificate

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Details

C382S241000, C382S199000, C700S187000

Reexamination Certificate

active

10807188

ABSTRACT:
A graphic contour extracting method includes: acquiring an image of a graphic form to be inspected; defining an inspection region for the image of the graphic form to be inspected by an inspection graphic form including at least one of a circle, an ellipse, a rectangle, a first rectangular graphic form, a second rectangular graphic form and a closed curved graphic form, at least one end of the first rectangular graphic form being replaced with any one of a semi-circle, a semi-ellipse and a parabola, at least one of four corners of the second rectangular graphic form being replaced with a ¼ circle or a ¼ ellipse, the closed curved graphic form being expressed by the following expression:(x-x0)4a4+(y-y0)4b4=1,and the inspection graphic form having an edge searching direction previously defined for at least one component thereof; and searching an edge of the graphic form to be inspected on the basis of the inspection graphic form to acquire contour information of the graphic form to be inspected.

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