Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Patent
1997-04-11
1999-05-04
Barlow, John
Data processing: measuring, calibrating, or testing
Measurement system
Orientation or position
702155, 382168, 382170, 382190, 348 94, G06T 100
Patent
active
058999655
ABSTRACT:
The front end position of the leads of a leaded part can be accurately detected even from image data having a noise signal mixed therein. A method including a step for defining, with respect to an electronic part having a plurality of leads to be packaged on a board by an electronic parts packaging plant, a two-dimensional test window having a rectangular coordinate system with the X-axis extending parallel with the direction in which the leads are juxtaposed and the Y-axis perpendicular to the X-axis; a lead emphasizing step for emphasizing the light intensity of the lead regions of image data obtained by photographing the electronic part in the test window; a data producing step for producing one-dimensional histogram data which indicates the distribution of light intensity along the Y-axis on the basis of the image data after having the light intensity of its lead regions emphasized; and a positioning step for calculating the Y-coordinate of the lead position in the test window on the basis of the histogram data thereon.
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Hada Junichi
Sano Kimiaki
Assouad Patrick
Barlow John
Matsushita Electric - Industrial Co., Ltd.
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