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FREAK matching

asked 2013-02-13 03:40:19 -0600

muthu gravatar image

updated 2013-02-13 03:43:23 -0600

For Freak descriptor which detector i have to use??also while matching, which matcher is supposed to be used?

Can anyone provide info. regarding what matcher is supposed to be used to brisk,brief,orb,sift,surf...

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There is a FREAK demo in the samples/ folder. Check it out

sammy gravatar imagesammy ( 2013-02-13 03:49:45 -0600 )edit

ok thank u...It is said that SURF/SIFT returns empty objects since they're patented...Is there any way to use them??

muthu gravatar imagemuthu ( 2013-02-13 04:08:55 -0600 )edit

To use SIFT and SURF now you've got to include the nonfree module. The algorithms were shiftetd to that. - #include <opencv2/nonfree/nonfree.hpp>

Bomber19 gravatar imageBomber19 ( 2013-02-13 04:27:07 -0600 )edit

i'm developing in android -java...can u pls tell the corresponding wrapping

muthu gravatar imagemuthu ( 2013-02-13 04:46:24 -0600 )edit

You can find it in the docs

sammy gravatar imagesammy ( 2013-02-13 05:15:41 -0600 )edit
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Actually I don't think it's possible if you are using OpenCV 2.4.3. The nonfree module is not included in this version. For Android I think the last one to have SURF and SIFT was 2.4.0. You can use this version but then you can't use OpenCV Manager

Hugo Teixeira gravatar imageHugo Teixeira ( 2013-02-13 08:01:33 -0600 )edit

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answered 2013-02-13 16:48:18 -0600

Guanta gravatar image

Why not using BRISK like the authors suggest in their papers for their detector? For the matcher you should use the BruteForceMatcher with Hamming-Distance since FREAK is a binary descriptor.

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Asked: 2013-02-13 03:40:19 -0600

Seen: 1,132 times

Last updated: Feb 13 '13