How knows if the contour passed on line?

asked 2015-12-05 10:48:12 -0600

Guilherme
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updated 2015-12-05 10:49:58 -0600

Hello there! I like to count the number of peoples or cars. I make a line on center of image. Ex.: image description

But, how can I know that he has passed and not cont again while the contour be on the line? The contours has a ID?

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answered 2015-12-06 19:36:55 -0600

diegomoreira
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You can use the minimum and maximum values of the rectangle to know. If the contour has passed, then the initial coordinate (x0, y0) and the end coordinate (x0 + x.width, y0 + y.height) rectangle, will be to the left side of the line you marked in the image.