c++ - OpenCV: imread gives CV_8UC3, can't convert to CV_8UC4? -

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need image try load , convert opencv:

here code:

templ = imread("template.bmp",-1); cout<<"templ before convert: "<<type2str(templ.type())<<endl; templ.convertto(templ,cv_8uc4); cout<<"templ after convert: "<<type2str(templ.type())<<endl;

this gives me cv_8uc3! image not made converting 4 channels or this? or need scaling factor (read sth this)?

thanks help, best regards!

cvtcolor( src,dst, cv_bgr2bgra );

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