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Hello mates.

I'm trying to change my old OrbFeatureDetector for a Ptr<FeatureDetector> and giving the parameter ORB, but when I try to detect something as:

Ptr<FeatureDetector> detector = FeatureDetector::create<FeatureDetector>("ORB");
detector->detect(img_object, keypoints_object);

1. My detector is null
2. I get an EXC_BAD_ACCESS with address=0x0

Do you have any idea why it could happen?

Thank you in advance.