Hello fellows,
I am trying to make a crop method for a specific image with a specific coordinates. While searching around the Internet I found some examples. The fastest I found was this one and I made some fixes along the way. Can someone give me any suggestions to make it more faster?
private static Image CropImage(Image image,int xStart, int yStart, int height, int width) { try { if (image.Height < height) { height = image.Height; } if (image.Width < width) { width = image.Width; } var bmphoto = new Bitmap(width,height, PixelFormat.Format32bppPArgb); bmphoto.SetResolution(image.VerticalResolution, image.HorizontalResolution); var grPhoto = Graphics.FromImage(bmphoto); grPhoto.CompositingMode = CompositingMode.SourceOver; grPhoto.CompositingQuality = CompositingQuality.HighSpeed; grPhoto.InterpolationMode = InterpolationMode.Default; grPhoto.PixelOffsetMode = PixelOffsetMode.Half; grPhoto.SmoothingMode = SmoothingMode.None; grPhoto.DrawImage(image, new Rectangle(0, 0, width, height),xStart,yStart,width,height,GraphicsUnit.Pixel); var mm = new MemoryStream(); bmphoto.Save(mm, ImageFormat.Jpeg); image.Dispose(); bmphoto.Dispose(); grPhoto.Dispose(); var outimage = Image.FromStream(mm); return outimage; } catch (Exception ex) { throw new Exception("Error cropping image, the error was: " + ex.Message); } } private void Button_Click(object sender, RoutedEventArgs e) { var stopwatch = new Stopwatch(); var imagePath = @"11069.jpg"; var resultImagePath = @" Woman Croped.jpg"; stopwatch.Start(); var resultImage = CropImage(new Bitmap(imagePath), 640,480,2400,1500); resultImage.Save(resultImagePath); resultImage.Dispose(); stopwatch.Stop(); MessageBox.Show(stopwatch.Elapsed.Milliseconds + "ms"); }Is there anything more to do with the CropImage() method to increase the performance?