-Feature Detection
+Feature Detection
=================
.. highlight:: cpp
.. ocv:cfunction:: void cvCanny( const CvArr* image, CvArr* edges, double threshold1, double threshold2, int aperture_size=3 )
- :param image: single-channel 8-bit input image.
+ :param image: 8-bit input image.
- :param edges: output edge map; it has the same size and type as ``image`` .
+ :param edges: output edge map; single channels 8-bit image, which has the same size as ``image`` .
:param threshold1: first threshold for the hysteresis procedure.