Invention Grant
US07809179B2 Manufacturing inspection of folded feminine hygiene products by cascading edge and skew detection 有权
通过级联边缘和歪斜检测制造检查折叠女性卫生产品

Manufacturing inspection of folded feminine hygiene products by cascading edge and skew detection
Abstract:
A process is provided for inspecting an absorbent article constructed from multiple components. A filtered image is produced from the absorbent article. In the image of the absorbent article, a nonlinear first edge and a second edge are identified at a location where there is a course change in contrast. A center point and centerline of the absorbent article is calculated using the position of the first edge and the second edge. A skew of the absorbent article is calculated. These known locations are utilized to define at least one additional region of the image for further analysis. A third edge and fourth edge are identified at a location where there is a fine change in contrast. The skew of the third edge and the fourth edge within the defined region is calculated and compared to known parameters for the absorbent article.
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