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

asked 2013-05-16 11:21:15 -0500

wuling gravatar image

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 -0500

berak gravatar image

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.

StevenPuttemans gravatar imageStevenPuttemans ( 2013-05-16 12:07:59 -0500 )edit
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Asked: 2013-05-16 11:21:15 -0500

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Last updated: May 16 '13