public Bitmap FindTextBitmap()
{
Bitmap textBmp = new Bitmap(sets.BmpTextWidth, sets.BmpTextHeight);
textBmp = sourceImage.Clone(new Rectangle(match.X + sets.TextMarginRight, match.Y + sets.TextMarginTop, sets.BmpTextWidth, sets.BmpTextHeight), PixelFormat.Format24bppRgb);
Grayscale gs = new Grayscale(0.2125, 0.7154, 0.0721);
SISThreshold th = new SISThreshold();
BinaryErosion3x3 bs = new BinaryErosion3x3();
ColorFiltering cf = new ColorFiltering();
cf.Red = new IntRange(90, 160);
cf.Green = new IntRange(55, 110);
cf.Blue = new IntRange(15, 85);
cf.ApplyInPlace(textBmp);
//for (int i = 0; i < textBmp.Width; i++)
//{
// for (int j = 0; j < textBmp.Height; j++)
// {
// if (((textBmp.GetPixel(i, j).R > 95) && (textBmp.GetPixel(i, j).R < 155)) && ((textBmp.GetPixel(i, j).G > 60) && (textBmp.GetPixel(i, j).G > 105)) && ((textBmp.GetPixel(i, j).B > 20 && (textBmp.GetPixel(i, j).B < 80))))
// {
// textBmp.SetPixel(i, j, Color.Black);
// }
// else
// {
// textBmp.SetPixel(i, j, Color.White);
// }
// }
//}
BilateralSmoothing bss = new BilateralSmoothing();
bss.KernelSize = 7;
bss.SpatialFactor = 5;
bss.ColorFactor = 30;
bss.ColorPower = 0.5;
bss.ApplyInPlace(textBmp);
textBmp = gs.Apply(textBmp);
th.ApplyInPlace(textBmp);
//bs.ApplyInPlace(textBmp);
//erose.ApplyInPlace(textBmp);
return(textBmp);
}
//TODO //FIXME
public static string CalculateHash(Bitmap original, string save_filtered_to = null)
{
// Hash calculation is very discriminating. If a pixel changes in color, the whole hash will be different.
// For us this is too rigid: we might support some "noise" or "error", manly because of animation of buttons.
// For this reason, it is a good idea to apply some filter to the image in order to flattern common pizels.
// A way to do this is to lower the image quality
// Apply some common filter and then calculate the hash.
if (original == null)
{
return(null);
}
using (Bitmap bmp = Grayscale.CommonAlgorithms.BT709.Apply(original))
{
// Apply the Threshold
var threshold = new SISThreshold();
threshold.ApplyInPlace(bmp);
Erosion f = new Erosion();
f.ApplyInPlace(bmp);
ImageConverter converter = new ImageConverter();
byte[] rawImageData = converter.ConvertTo(bmp, typeof(byte[])) as byte[];
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] hash = md5.ComputeHash(rawImageData);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hash.Length; i++)
{
sb.Append(hash[i].ToString("X2"));
}
string strhash = sb.ToString();
if (save_filtered_to != null)
{
bmp.Save(string.Format(save_filtered_to, strhash + "_filtered"));
}
return(strhash);
}
}
private void Button_HSV_Filter_Click(object sender, EventArgs e)
{
Bitmap image = new Bitmap(pictureBox1.Image);
HSLFiltering filterHsl = new HSLFiltering();
Mean filterMean = new Mean();
filterHsl.Luminance = new AForge.Range(0.1f, 1);
filterHsl.UpdateHue = false;
filterHsl.UpdateSaturation = false;
filterHsl.UpdateLuminance = true;
filterHsl.ApplyInPlace(image);
filterMean.ApplyInPlace(image);
SISThreshold filterThresold = new SISThreshold();
GrayscaleBT709 filterGray = new GrayscaleBT709();
image = filterGray.Apply(image);
Bitmap clone = image.Clone(new Rectangle(0, 0, image.Width, image.Height), PixelFormat.Format8bppIndexed);
filterThresold.ApplyInPlace(clone);
image = clone;
Bitmap clone2normal = image.Clone(new Rectangle(0, 0, image.Width, image.Height), PixelFormat.Format32bppRgb);
image = clone2normal;
BlobCounter bc = new BlobCounter();
bc.FilterBlobs = true;
bc.MinWidth = 5;
bc.MinHeight = 5;
bc.ProcessImage(image);
Blob[] blobs = bc.GetObjects(image, false);
var rectanglesToClear = from blob in blobs select blob.Rectangle;
using (var gfx = Graphics.FromImage(image))
{
foreach (var rect in rectanglesToClear)
{
if (rect.Height < 20 && rect.Width < 20)
{
gfx.FillRectangle(Brushes.White, rect);
}
}
gfx.Flush();
}
Dilatation filterDilation = new Dilatation();
image = image.Clone(new Rectangle(0, 0, image.Width, image.Height), PixelFormat.Format48bppRgb);
filterDilation.ApplyInPlace(image);
filterDilation.ApplyInPlace(image);
Erosion filterErosion = new Erosion();
filterErosion.ApplyInPlace(image);
pictureBox2.Image = image;
}
