How to access pixels along a line or curve using opencv?

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asked 2013-05-16 11:21:15 -0600

wuling

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Hi all, is any method to access pixels along a line or curve in opencv???

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answered 2013-05-16 11:34:49 -0600

berak
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for a straight line between 2 points, there's the LineIterator.

unfortunately it does not work with curves or arbitrary shapes, you might try findContours to get an array of waypoints

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If you would like to access pixels on a curve, you could basically store the coördinates first by create a binary image of your image versus the line, using lineiterator to go over each row or column and storing the coördinates of each point that has a 1 value.