OpenCV C++ and cvSmooth

Question

Anyone know what could be problem:

cvSmooth(origImage, grayImage1, CV_BLUR,3);

I received error:

error: cannot convert `cv::Mat\         


        

Answer 1

Be careful not to mix the OpenCV 1.x API (CvArr) with the 2.x API (cv::Mat). I guess you tried an example from somewhere.

Answer 2

cv::Mat is a new structure from the C++ version of OpenCV. cvSmooth() is from the old C API. Do not mix the C interface with the C++!

I'll suggest that you take a moment to read the introduction.

Also, if you check opencv/modules/imgproc/src/smooth.cpp you'll see that cv::boxFilter() is the equivalent for cvSmooth(CV_BLUR) on the new C++ interface.