private void applyButton_Click(object sender, EventArgs e)
{
if (InputImage == null) return; // Get out if no input image
if (OutputImage != null) {
OutputImage.Dispose(); // Reset output image
OutputImage = null;
}
Color[,] image = new Color[InputImage.Size.Width, InputImage.Size.Height]; // Create array to speed-up operations (Bitmap functions are very slow)
// Setup progress bar
progressBar.Visible = true;
progressBar.Minimum = 1;
progressBar.Maximum = 100;
progressBar.Value = 33;
progressBar.Step = 1;
// Copy input Bitmap to array
for (int x = 0; x < InputImage.Size.Width; x++) {
for (int y = 0; y < InputImage.Size.Height; y++) {
image[x, y] = InputImage.GetPixel(x, y); // Set pixel color in array at (x,y)
}
}
//==========================================================================================
// Start of own code
//==========================================================================================
goto Test;
goto GreenScale;
goto NegativeThreshold;
Test:
var red = image.ColorThresholdFunc(ThresholdValue, 0, c => c.R > 100 && c.G < 50 && c.B < 50);
var blue = image.ColorThresholdFunc(ThresholdValue, 0, c => c.B > 100 && c.G < 125 && c.R < 50);
var redblue = Operators.Op(red, blue, (a, b) => a + b);
redblue = redblue.Dilate(Kernels.DiamondElement5x5);
redblue = redblue.Erode (Kernels.DiamondElement5x5);
redblue = redblue.CountObjects();
var boundz = redblue.BoundingBox();
var tmp = redblue.ArrayToBitmap();
using ( Graphics g=Graphics.FromImage( tmp))
foreach (Color key in boundz.Keys) {
g.DrawRectangle(new Pen(Color.Red), boundz[key]);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
}
image = tmp.BitmapToArray();
goto End;
RedThreshold:
image = image.ColorThresholdFunc(ThresholdValue, 0, c => c.R > 100 && c.G < 50 && c.B < 50);
goto End;
BlueThreshold:
image = image.ColorThresholdFunc(ThresholdValue, 0, c => c.B > 100 && c.G < 125 && c.R < 50);
goto End;
XDerivate:
image = image.ApplyKernel(Kernels.XDerivateKernel, Functors.KernelSampleToValue.Sum, Functors.DoubleToDouble.Multiply);
GreenScale:
image = image.Transform(Functors.ColorToColor.ToGrayScaleGreen);
goto NegativeThreshold;
Grayscale:
// Gray scale
image = image.Transform(Functors.ColorToColor.ToGrayScale);
//goto NegativeThreshold;
goto End;
goto Dilate;
NegativeThreshold:
// Negative threshold
image = image.Threshold(3, 1, 0);
//image = image.Threshold(200, 0, 1);
goto Labelling;
goto End;
goto Erode;
Labelling:
image = image.CountObjects();
Dictionary<Color, Tuple<double, double>> centroids = image.Centroids();
Dictionary<Color, int> area = image.Areas();
Dictionary<Color, int> momOrder = image.MomentOfOrder(0, 0);
goto ShowBounds;
goto End;
ShowBounds:
Dictionary<Color, Rectangle> bounds = image.BoundingBox();
Dictionary<Color, double> rectularties = image.ObjectRectangularity();
var circularity = image.Circularity();
Bitmap img = image.ArrayToBitmap();
// paint
using ( Graphics g=Graphics.FromImage(img) )
foreach ( Color key in bounds.Keys ) {
g.DrawRectangle(new Pen(Color.Red), bounds[key]);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.DrawString(String.Format("c: {0}", Math.Round(circularity[key], 2).ToString()), new Font("Thaoma", 16), Brushes.Green, bounds[key]);
}
/* Circularity range
Circle: 0.86 - 1.00
Driehoek: 0.78 - 0.85
Rectangle: 0.50 - 0.70
Octagon: 0.95 - 1.00
Diamond: 0.40 - 0.50
// Rectangularity range
Circle: 0.75 - 0.85
Driehoek: 0.55 - 0.65
Rectangle: 0.95 - 1.05
Octagon: 0.70 - 0.80
Diamond: 0.55 - 0.60
*/
// convert back
image = img.BitmapToArray();
goto End;
Dilate:
image = image.Dilate(Kernels.CrossElement3x3);
goto End;
Erode:
image = image.Erode(Kernels.CrossElement3x3);
goto Dilate;
End:
//==========================================================================================
// End of own code
//==========================================================================================
progressBar.Value = 66;
// Copy array to output Bitmap
OutputImage = new Bitmap(InputImage.Size.Width, InputImage.Size.Height); // Create new output image
for (int x = 0; x < InputImage.Size.Width; x++) {
for (int y = 0; y < InputImage.Size.Height; y++) {
OutputImage.SetPixel(x, y, image[x, y]); // Set the pixel color at coordinate (x,y)
}
}
progressBar.Value = 100;
pictureBox2.Image = OutputImage; // Display output image
progressBar.Visible = false; // Hide progress bar
}