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C# EmguCV影象處理擷取矩形區域

Rectangle rectangle = new Rectangle(10,20,30,40);
Image<Gray, byte> Sub = Image.GetSubRect(rectangle);
Image<Gray, byte> CropImage = new Image<Gray, byte>(Sub.Size);
CvInvoke.cvCopy(Sub, CropImage, IntPtr.Zero);


//程式中Image是原始影象,型別Image<Gray, byte>,rectangle是矩形,CropImage是截得的影象。