Object extracting method

Details Object extracting method Object extracting method

1993-07-23

1995-12-12

Rosenberger, Richard A.

Optics: measuring and testing

By alignment in lateral direction

With registration indicia

382168, G01B 1100, G06K 938

Patent

active

054754925

ABSTRACT:
An object extracting method of extracting a position of an object in a to-be-inspected region through an image processing, includes the steps of obtaining a plurality of density values of brightness from the to-be-inspected region, converting the density value which is larger or smaller than a preset threshold value into a specified value, integrating the density values at an X or Y coordinate on a Y or X axis, projecting the integrated density values at the X or Y axis, and extracting the position of the object present in the to-be-inspected region based on change of the integrated density values.

REFERENCES:
patent: 5138671 (1992-08-01), Yokoyama
Translation of German Patent 2,753,953, Kuni et al Aug. 1978.
"Image Processing Application Technique", Tanaka et al., Jun. 20, 1989, pp. 42-45, Kogyo Chosakai Publishing Co., Ltd.

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