c++ - Retrieve feature type from OpenCV FeatureDetector -


In OpenCV, it is very common to name a cv :: FeatureDetector feature : 

  cv :: Ptr   
 This is a factory pattern,  cv :: FeatureDetector  is an abstract class.  
 Then, given a variable type of  cv :: Ptr , is it possible to retrieve the feature name? This is  "SURF"  in my example.  class = "post-text" itemprop = "text"> 
  cv :: algorithm  one  name ()  gets the method which gives the algorithm name in the string. In the case of your surf detector,  named ()  returns  
 
 Feature2D.SURF   
 which is a human-readable form In general, this string is  algorithm-type .  Example-Name , although there is only one-word description in many things, for any feature detection algorithm, the  algorithm-type  prefix always  Feature2D < / code>. If you need an exact string match, you can parse it manually.  
  Auto Surf = CV :: Feature Detector :: Create ("Surf"); Auto en = surf-> Name (); Std :: cout & lt; & Lt; N & lt; & Lt; Std :: endl; // print "Feature 2D.SURF", without quote

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