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Common Interfaces of Descriptor Extractors
==========================================
.. highlight:: cpp
Extractors of keypoint descriptors in OpenCV have wrappers with a common interface that enables you to easily switch
between different algorithms solving the same problem. This section is devoted to computing descriptors
represented as vectors in a multidimensional space. All objects that implement the ``vector``
descriptor extractors inherit the
:ocv:class:`DescriptorExtractor` interface.
CalonderDescriptorExtractor
---------------------------
.. ocv:class:: CalonderDescriptorExtractor : public DescriptorExtractor
Wrapping class for computing descriptors by using the
:ocv:class:`RTreeClassifier` class. ::
template<typename T>
class CalonderDescriptorExtractor : public DescriptorExtractor
{
public:
CalonderDescriptorExtractor( const string& classifierFile );
virtual void read( const FileNode &fn );
virtual void write( FileStorage &fs ) const;
virtual int descriptorSize() const;
virtual int descriptorType() const;
protected:
...
}
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