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alfredplpl/opencv_copyTo_trans.cpp

Last active December 25, 2015 16:39
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opencv_copyTo_trans.cpp
cv::Mat image=cv::imread("./image.png",-1);
cv::Mat trans=cv::imread("./trans.png",0);
cv::Rect rect1(startColumn1,startRow1,trans.cols,trans.rows);
cv::Mat subdst1=dst(rect1);
trans.convertTo(subdst1,subdst1.type(),alpha);//double alphaは透過率[0.0, 1.0]
cv::Rect rect2(startColumn2,startRow2,image.cols,image.rows);
cv::Mat subdst2=dst(rect2);
image.copyTo(subdst2);
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