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add external opencv libraries to ros package

asked 2013-02-02 00:05:07 -0600

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Hi all i use opencv libraries in ros qt package . i need to use surf feature detector in my work but libraries of this function not exist in ros_opencv . i want to add external opencv libraries to package but i can't this . can anybody help me ?

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answered 2013-02-02 02:08:05 -0600

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You don't need external libraries for SIFT and SURF. Just add #include <opencv2/nonfree/features2d.hpp> and it will work. You initialize your fdeature detector and descriptor using : cv::Ptr<cv::FeatureDetector> detect = new cv::SurfFeatureDetector; and descriptor : cv::Ptr<cv::DescriptorExtractor> detect = new cv::SurfDescriptorExtractor; You could replace the word Surf with Sift or Orb for the feature detector. And you could also replace the descriptor with Sift or Brief.

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where do i add the red code lines on?

Akali gravatar imageAkali ( 2015-01-15 19:20:38 -0600 )edit

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Asked: 2013-02-02 00:05:07 -0600

Seen: 2,099 times

Last updated: Feb 02 '13