OpenCV Keypoints response, greater or less?

Question

According to OpenCV KeyPoint documentation, there is response field in every keypoints that:

float response: The response, by which the strongest keypoints have been selected.

But I couldn't find whether the greater response is better or less? I want to sort the keypoints and pick only the best 20.

score 5 · Accepted Answer · edited May 23 '17 at 11:43

5

Here, response is indeed an indicator of "how good" (roughly speaking, in terms of corner-ness) a point is. The higher, the better. The strongest keypoints means the ones that are the best.

You can check out this thread for more info and examples.

edited May 23 '17 at 11:43

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answered Jul 11 '14 at 14:28

herohuyongtao

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It is represented as a floating point number. You mean, for instance, `0.87` is better than `0.76`? – Mikael S. Jul 11 '14 at 14:33
@MikaelS. Yes, the higher, the better. – herohuyongtao Jul 11 '14 at 14:33

OpenCV Keypoints response, greater or less?

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