Eliminating false positives while using the matchTemplate() function?

templateMatching

asked 2015-03-06 08:05:13 -0600

Denson
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The matchTemplate() function in opencv seems to giving positives even when the desired Template is not there in the Scene image.On searching,found out that it always gives a detection/match even if the template is not there.The detection being the closest match. Since my application requires that the template not necessarily be in the scene image. This brings me to my question. Is there a way to minimize or even eliminate these false positives.Any approach towards this problem is appreciated.

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answered 2015-03-06 08:23:43 -0600

thdrksdfthmn
2170 ●5 ●18 ●46

updated 2015-03-09 03:03:18 -0600

If you watch the doc, you'll see that the result is the map of comparisons, so depending on the method, you'll get an error of matching. You can filter the result by a threshold (you do not want a match that has an error larger than X).

You can filter the result with threshold and you shall test the X value for finding a good one. Good luck!