Translating Keypoints To Orignal Image After Pyrdown

asked 2015-12-14 23:09:00 -0500

jpistorino gravatar image

updated 2015-12-15 01:12:57 -0500

I have a full HD image (1920 x 1080).

In an effort to improve keypoint detection, I am using pyrdown to reduce the image size. Then, I run SURF on the reduced image.

My question is: what is the best way to translate the keypoints found on the reduced image to where they would be on the original image for display?

Thanks for any help.

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