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difference between feature and edge based geometric matching

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Can anyone help me with the difference between a feature and an edge based geometric template matching ????

-$hiv@
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Accepted by topic author $hiv@

I understand that :

o feature based geometric matching uses directly the intensity of the pixels, and searches pattern and their parameters

o edge based geometric matching firstly calculates the gradient of the image, and then uses this gradient to search features with generalised Hough transform..

 

More information here : NI documentation

Hope this helps...

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