最終更新:2021-11-13 (土) 03:41:07 (892d)  

Mat.FromImageData
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byte[] imageData = System.IO.File.ReadAllBytes("foobar.jpg");

Mat colorMat = Mat.FromImageData(imageData, ImreadModes.Color);
Mat grayscaleMat = Mat.FromImageData(imageData, ImreadModes.GrayScale);