OpenCV error: ‘create’ is not a member of ‘cv::FeatureDetector {aka cv::Feature2D}’

featuredetector

asked 2015-07-02 03:02:37 -0600

mkc
136 ●5 ●12 https://github.com/mel...

updated 2015-07-02 03:05:24 -0600

I'm trying a simple AKAZE features example and I got the error ‘create’ is not a member of ‘cv::FeatureDetector:

Ptr<FeatureDetector> detector = FeatureDetector::create("AKAZE");

Any idea on how to initialize AKAZE? I tried matchmethod_orb_akaze_brisk.cpp example previously in my Ubuntu 12.04 but it gave me a Segmentation Fault.

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There is no more abstract create for features, in OpenCV 3.0, you shall create the needed featureDetector: see the docs

thdrksdfthmn ( 2015-07-02 03:34:30 -0600 )edit

the old Algorithm interface is gone in 3.0.

Ptr<FeatureDetector> detector = AKAZE::create();
Ptr<Feature2D> sift = xfeatures2d::SIFT::create(); // if you have the contrib repo

also please see the tutorial

berak ( 2015-07-02 03:38:23 -0600 )edit

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//Ptr<FeatureDetector> detector = FeatureDetector::create("AKAZE"); // Old Ptr<AKAZE> detector = AKAZE::create(); // // This worked in OpenCV 3.0; and also Ptr<AKAZE> detector = AKAZE::create(AKAZE::DESCRIPTOR_MLDB_UPRIGHT, 0, 3, 0.0001, 4, 4, KAZE::DIFF_PM_G2);

Ptr<AKAZE> AKAZE::create(int descriptor_type, int descriptor_size, int descriptor_channels, float threshold, int octaves, int sublevels, int diffusivity)

OpenCV error: ‘create’ is not a member of ‘cv::FeatureDetector {aka cv::Feature2D}’

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OpenCV error: ‘create’ is not a member of ‘cv::FeatureDetector {aka cv::Feature2D}’ edit

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OpenCV error: ‘create’ is not a member of ‘cv::FeatureDetector {aka cv::Feature2D}’