C#中使用OpenCV的常用函数的常用示例

using OpenCvSharp;
Mat image = Cv2.ImRead("path_to_your_image.jpg", ImreadModes.Color);

Cv2.NamedWindow("Image Window", WindowFlags.Normal);
Cv2.ImShow("Image Window", image);
Cv2.WaitKey(0);
Cv2.DestroyAllWindows();

Mat grayImage = new Mat();
Cv2.CvtColor(image, grayImage, ColorConversionCodes.BGR2GRAY);

Mat[] channels = new Mat[3];
Cv2.Split(image, channels);
Mat blueChannel = channels[0]; // BGR order, so the first channel is Blue

Mat bitwiseNotImage = new Mat();
Cv2.BitwiseNot(image, bitwiseNotImage);

int[] histSize = { 256 };
float[] ranges = { 0, 256 };
MatND histogram = new MatND();
Cv2.CalcHist(new Mat[] { grayImage }, new int[] { 0 }, null, histogram, new int[] { 1 }, histSize, ranges);

Rect roi = new Rect(new Point(100, 100), new Size(200, 200));
Mat croppedImage = new Mat(image, roi);

Mat resizedImage = new Mat();
Cv2.Resize(image, resizedImage, new Size(800, 600));

Cv2.ImWrite("output_image.jpg", image);