static void TestLevels()
{
var bmp1 = (Bitmap)Bitmap.FromFile("meta1.png");
var bmp2 = (Bitmap)Bitmap.FromFile("meta2.png");
LevelsLinear filter = new LevelsLinear();
// set ranges
filter.Input = new IntRange(150, 255);
// apply the filter
var sw = Stopwatch.StartNew();
filter.ApplyInPlace(bmp2);
sw.Stop();
var contrast = new ContrastStretch();
var bmp4 = contrast.Apply(bmp2);
var bmp3 = ImageUtil.AdjustImage(bmp2, contrast: 2f);
}
public double GetTemperature()
{
var temp = 0.0;
var image = Image.FromFile(filename);
var grayscale = new Grayscale(0.2125, 0.7154, 0.0721);
image = grayscale.Apply(image);
var invert = new Invert();
image = invert.Apply(image);
var stats = new ImageStatistics(image);
var levelsLinear = new LevelsLinear
{
InGray = stats.Gray.GetRange(2.90)
};
image = levelsLinear.Apply(image);
var contrast = new ContrastStretch();
image = contrast.Apply(image);
var erosion = new Erosion();
image = erosion.Apply(image);
var blur = new GaussianBlur(2, 3);
image = blur.Apply(image);
var threshold = new Threshold(79);
image = threshold.Apply(image);
image.Save(processedFileName, System.Drawing.Imaging.ImageFormat.Jpeg);
image.Dispose();
var text = Recognise();
double.TryParse(text.Replace(',', '.'), out temp);
return temp;
}
public static Bitmap AutoColorCorrections(Bitmap source)
{
if (source == null) throw new ArgumentNullException("source");
//Bitmap output = null;
ContrastStretch filter = new ContrastStretch();
filter.ApplyInPlace(source);
//float brightness = 1.0f; // no change in brightness
//float contrast = 2.0f; // twice the contrast
//float gamma = 1.0f; // no change in gamma
//float adjustedBrightness = brightness - 1.0f;
//// create matrix that will brighten and contrast the image
//float[][] ptsArray ={
// new float[] {contrast, 0, 0, 0, 0}, // scale red
// new float[] {0, contrast, 0, 0, 0}, // scale green
// new float[] {0, 0, contrast, 0, 0}, // scale blue
// new float[] {0, 0, 0, 1.0f, 0}, // don't scale alpha
// new float[] {adjustedBrightness, adjustedBrightness, adjustedBrightness, 0, 1}};
//using (ImageAttributes imageAttrs = new ImageAttributes())
//{
// imageAttrs.ClearColorMatrix();
// imageAttrs.SetColorMatrix(new ColorMatrix(ptsArray), ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
// imageAttrs.SetGamma(gamma, ColorAdjustType.Bitmap);
// using (Graphics g = Graphics.FromImage(output))
// {
// g.DrawImage(source, new Rectangle(0, 0, output.Width, output.Height), 0, 0, source.Width, source.Height, GraphicsUnit.Pixel, imageAttrs);
// }
//}
return source;
}
private void Contrast_scretchFunc(ref Bitmap frame, int par_int, double par_d, int par_R, int par_G, int par_B)
{
ContrastStretch filter = new ContrastStretch();
// process image
filter.ApplyInPlace(frame);
}
public static Bitmap ApplyContrastStretch(Bitmap pBitmap)
{
var filter = new ContrastStretch();
return filter.Apply(pBitmap);
}
public BitmapSource Apply(BitmapSource image)
{
var filter = new ContrastStretch();
var bmp = filter.Apply(image.ToBitmap());
return bmp.ToBitmapImage();
}
private void contrastStretch_Click(object sender, RoutedEventArgs e)
{
if (contrastStretch.IsChecked == true)
{
ContrastStretch filter = new ContrastStretch();
filter.ApplyInPlace(mainPhoto);
Photography.Source = ToBitmapImage(mainPhoto);
}
else
{
UpdatePicture(ImageURL);
Photography.Source = ToBitmapImage(mainPhoto);
}
mainPhotoIS = Photography.Source;
UpdateHistograms(null);
UpdateChannelPreviews(null);
}
private void Contrast_scretchFunc(ref Bitmap frame)
{
ContrastStretch filter = new ContrastStretch();
// process image
filter.ApplyInPlace(frame);
}