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cvg / GlueStick

Joint Deep Matcher for Points and Lines 🖼️💥🖼️ (ICCV 2023)
https://iago-suarez.com/gluestick
MIT License
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Question about reprojection error #17

Closed HJoonKwon closed 10 months ago

HJoonKwon commented 10 months ago

I have a question for the re-projection error presented on the paper. It's mentioned on the paper that the authors followed SuperGlue to calculate the re-projection error. Can I assume that you guys used SED to compute the Area Under the Curve (AUC) of the re-projection error of the four image corners?

Thank you.

rpautrat commented 10 months ago

Hi, if you are talking about the homography experiment on HPatches, we used the reprojection error of the four image corners, as in SuperGlue.

The piece of code that you linked refers to an epipolar error, which is for real camera pose changes, not for homographies.

HJoonKwon commented 10 months ago

Hi, if you are talking about the homography experiment on HPatches, we used the reprojection error of the four image corners, as in SuperGlue.

The piece of code that you linked refers to an epipolar error, which is for real camera pose changes, not for homographies.

Ahh, I see. Then the reprojection error on the paper measures the Euclidean distance between the GT corner points and the estimated corner points that are mapped using the estimated homography? Thank you for the kind answer :)

rpautrat commented 10 months ago

Yes, exactly!