opencv將黑色和白色轉換爲綠色和藍色

Question

我有一個黑白圖像，並希望將其轉換爲綠色和藍色圖像。所以黑色變綠，白色變藍。我怎樣才能用openCV做到這一點？

Answer 1

您可以使用黑白圖像作爲面膜：

Mat blackWhite = ... //image of type CV_8U 

//new green Mat 
Mat bgr(blackWhite.size(), CV_8UC3, Scalar(0,255,0)); 
//set pixels masked by blackWhite to blue 
bgr.setTo(Scalar(255,0,0), blackWhite);