OpenCV Java 2.4.9 vs 3.1.0 BRISK Implementation

java
brisk

asked 2016-03-26 15:19:07 -0600

mualloc
6 ●2

updated 2016-03-26 20:39:39 -0600

berak
32993 ●7 ●81 ●312

When I compared simple grayscale images with OpenCV Java 3.1 on Windows with BRISK detector, extractor and BRUTEFORCE_HAMMING matcher I got perfect results but then I tried the same code with 2.4.9 version number of correct matchings has significantly decreased. I also noticed number of keypoints and their descriptors has significantly decreased.

So I wonder can BRISK implementation has changed that much or is there a possibility that I missed to implement?

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answered 2016-03-27 10:15:39 -0600

Eduardo
3589 ●1 ●15 ●41

It's not a surprise for me (and even a good think) that you get better results with OpenCV 3.1 compared to 2.4.9 version.

Indeed, there were a pull request in order to fix BRISK by using AGAST detector instead of FAST features as in the original paper, as you can see it here: Fix BRISK detector&descriptor using proper AGAST. #3919.