[OpenCvSharp] Mat, Bitmap, byte[] 변환

작성날짜 : 2021.01.18

운영체제 : Windows 10

VS Tool : VS2019

.NetFramework ver : 4.7.2

 

출처 : blog.naver.com/PostView.nhn?blogId=nuren1&logNo=220727174546&redirect=Dlog&widgetTypeCall=true

image 변환 mat <-> bitmap <-> bye

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);