MEASURING DEVICE AND MEASURING METHOD FOR ROD-SHAPED ARTICLE, AND MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR ROD-SHAPED ARTICLE
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Oct 28, 2024
filing date -
Oct 28, 2024
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Abstract
A measuring device is provided for determining the outer circumference length of a rod-shaped article in a conveyance section. The device includes a camera that captures an image of the article's end surface and an image processing unit that processes the image to calculate the circumference. The unit identifies the outer edge of the end surface, generates a virtual circle based on the edge, and draws n straight lines through the circle's center. It identifies intersection points where each line intersects the outer edge and measures distances (d1, d2, . . . , dn) between intersections along each line. The virtual diameter is obtained by averaging these distances, and the outer circumference length is calculated by multiplying the virtual diameter by π.
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