private void button1_Click(object sender, EventArgs e) { Dictionary <string, Image <Bgr, byte> > bgrImages = new Dictionary <string, Image <Bgr, byte> >(); //--Initialize openFiledialogue--- OpenFileDialog openFileDialog1 = new OpenFileDialog(); openFileDialog1.Filter = "Images (*.BMP;*.JPG;*.GIF;*.PNG)|*.BMP;*.JPG;*.GIF;*.PNG"; openFileDialog1.FilterIndex = 1; openFileDialog1.RestoreDirectory = true; openFileDialog1.Title = "Image Selection"; openFileDialog1.Multiselect = true; //-------------------------------- DialogResult dialogresult = openFileDialog1.ShowDialog(); //---Save Images in Dictionary and display in ListBox---- if (dialogresult == System.Windows.Forms.DialogResult.OK) { if (imagesloaded) { //reset and clear everything if images were loaded before reset(); cleanLoadedImages.Clear(); LoadedImages.Clear(); workImages.Clear(); listBox1.Items.Clear(); //listBox1.Update(); } int currentImage = 0; // Read the files listBox1.BeginUpdate(); foreach (String file in openFileDialog1.FileNames) { // Create a PictureBox. try { //Convert Images to Emgu Format Image tempImage = Image.FromFile(file); Bitmap tempBitmap = new Bitmap(tempImage); Emgu.CV.Image <Bgr, byte> cleanImage = new Emgu.CV.Image <Bgr, byte>(tempBitmap); Emgu.CV.Image <Hsv, Byte> loadedImage = new Emgu.CV.Image <Hsv, byte>(tempBitmap); string loadedImageName = "Image:" + currentImage; //Save Images listBox1.Items.Add(loadedImageName); cleanLoadedImages.Add(loadedImageName, cleanImage); LoadedImages.Add(loadedImageName, loadedImage.SmoothMedian(mediansize)); if (checkBox1.Checked) { bgrImages.Add(loadedImageName, cleanImage.SmoothGaussian(gaussiansize)); } } catch (Exception ex) { // Could not load the image - probably related to Windows file system permissions. MessageBox.Show("Cannot load the image: " + file.Substring(file.LastIndexOf('\\')) + ".\n\n" + ex.Message); } currentImage++; } listBox1.EndUpdate(); imagesloaded = true; if (checkBox1.Checked) { LoadedImages = BackgroundSubtractor.getWithoutBackground(bgrImages); } listBox1.SelectedIndex = 0; } //---------------------------------------- }