Method of image processing in optical measuring apparatus

Image analysis – Applications – Manufacturing or product inspection

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382152, 382288, 348 95, 348135, 356375, G06K 900

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active

056339500

ABSTRACT:
An optical cutting image which has a maximum portion in the X-axis direction on the screen of an image sensing device and which extends in the X-axis direction away from the maximum portion so as to expand in the Y-axis direction is measured by means of plural windows to be set on both side portions of the image as seen in the Y-axis direction, equations to represent the image lines of both side portions, and the like. The position of a front end point of the image is measured. A first window which is oblong in the X-axis direction is set such that the front end point is contained therein. A position of the center of gravity of image inside the first window is measured. Second and third windows which are oblong in the Y-axis direction are set at a position which is backwardly away by a predetermined length from the center of gravity of image inside the first window in the X-axis direction to measure the position of the center of gravity of image inside each of the windows. A reference point which has a predetermined correlation with the centers of gravity of image inside the second and third windows is obtained. The above-mentioned plural windows are respectively set in a predetermined positional relationship with this reference point.

REFERENCES:
patent: 4988201 (1991-01-01), Sugitani et al.
patent: 5027416 (1991-06-01), Loriot
patent: 5129010 (1992-07-01), Higuchi et al.
patent: 5206917 (1993-04-01), Veno et al.
patent: 5311289 (1994-05-01), Yamaoka et al.
patent: 5533146 (1996-07-01), Iwai

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