CODEWITHSUNDEEP
c#.netvb.netopencv
codeDom
codeDom

Reputation: 1769

How save OpenCvSharp.Mat with CV_8UC1 type?

I wrote the following code to load a picture with any type, I convert it to type CV_8UC1 and then save it again in the file.

The problem is that when I load the saved image it is not a CV_8UC1 type but a CV_8UC3 type.

Where am I wrong?

    private void SaveTest()
    {
        var fileName = @"F:\src.png";
        Mat src = new Mat(fileName);
        var gray = src.CvtColor(ColorConversionCodes.BGR2GRAY);
        Debug.Assert(gray.Type() == MatType.CV_8UC1);

        var fileName2 = @"F:\temp.png";
        gray.ImWrite(fileName2);
        Mat test = new Mat(fileName2);
        Debug.Assert(test.Type() == MatType.CV_8UC1);
    }

Upvotes: 0

Views: 4447

Answers (1)

codeDom
codeDom

Reputation: 1769

Just change instead this:

Mat test = new Mat(fileName2);

this:

Mat test = new Mat(fileName2, ImreadModes.Unchanged);

Upvotes: 1

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