How do you compare the x and y differences of feature points in two different images

keypoint-matching

asked 2019-10-06 02:40:32 -0600

I use KeyPoint::convert to convert KeyPoint to Point2f with keypointIndexes. but two different vector<point2f>.at(i) can not correspond. How can I achieve this goal.

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answered 2019-10-06 03:15:08 -0600

berak
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updated 2019-10-06 03:18:29 -0600

you don't, the positions are meaningless (there can be arbitrary translation / rotation between your images)

what you do instead is - look at the texture around the keypoints, gather features from there and compare those, not the keypoints.

please have a look at the resp. tutorials , e.g. this one

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Thank you for your answer. I am learning opencv

kerorohu ( 2019-10-06 03:20:49 -0600 )edit

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Asked: 2019-10-06 02:40:32 -0600

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Last updated: Oct 06 '19

How do you compare the x and y differences of feature points in two different images edit