Converting Image

### Mat -> System.Drawing.Bitmap ###

Mat mat = new Mat("foobar.jpg", ImreadModes.Color);
Bitmap bitmap = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(mat);

### System.Drawing.Bitmap -> Mat ###

Bitmap bitmap = new Bitmap("foobar.jpg");
Mat mat = OpenCvSharp.Extensions.BitmapConverter.ToMat(bitmap);

### Mat -> byte[] ###

Mat mat = new Mat("foobar.jpg", ImreadModes.Color);
byte[] bytes1 = mat.ToBytes(".png");
byte[] bytes2;
Cv2.ImEncode(".jpg", mat, out bytes2);

### byte[] -> Mat ###

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

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

Mat alt = Cv2.ImDecode(imageData, ImreadModes.GrayScale);