private string reconhecerCaptcha(Image img)
{
Bitmap imagem = new Bitmap(img);
imagem = imagem.Clone(new Rectangle(0, 0, img.Width, img.Height), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Erosion erosion = new Erosion();
Dilatation dilatation = new Dilatation();
Invert inverter = new Invert();
ColorFiltering cor = new ColorFiltering();
cor.Blue = new AForge.IntRange(200, 255);
cor.Red = new AForge.IntRange(200, 255);
cor.Green = new AForge.IntRange(200, 255);
Opening open = new Opening();
BlobsFiltering bc = new BlobsFiltering();
Closing close = new Closing();
GaussianSharpen gs = new GaussianSharpen();
ContrastCorrection cc = new ContrastCorrection();
bc.MinHeight = 10;
FiltersSequence seq = new FiltersSequence(gs, inverter, open, inverter, bc, inverter, open, cc, cor, bc, inverter);
pictureBox.Image = seq.Apply(imagem);
string reconhecido = OCR((Bitmap)pictureBox.Image);
return reconhecido;
}
private void btn_prep_Click(object sender, EventArgs e)
{
rich_status.Text += "Removing Image Noise...\n";
image = new Bitmap(pictureBox1.Image);
Preprocesses.monochrome(image);
//ConservativeSmoothing filter = new ConservativeSmoothing();
GaussianSharpen filter = new GaussianSharpen(4, 11);
filter.ApplyInPlace(image);
rich_status.Text += "Image Pre-processing Successful.\n";
pictureBox1.Image = image;
}
public Processor()
{
initGlyphs();
// resizeFilter = new ResizeNearestNeighbor(1920, 1080);
// resizeFilter = new ResizeBicubic(1920, 1080);
resizeFilter = new ResizeBilinear(1920, 1080);
gaussianFilter = new GaussianSharpen(4, 11);
sharpenFilter = new Sharpen();
brightnessFilter = new ContrastCorrection(15);
autoEvent = new AutoResetEvent(false);
Thread thread = new Thread(process);
thread.Start();
}
public static Bitmap GaussianSharpen(Bitmap bmp, int value, int kernel)
{
GaussianSharpen filter = new GaussianSharpen(value, kernel);
filter.ApplyInPlace(bmp);
return bmp;
}
/// <summary>
/// Sharpen using a gaussian sharpen filter.
/// </summary>
public static Bitmap Sharpen(this Bitmap bitmap) {
if ((bitmap = bitmap.Channel()) != null) {
var gaussianSharpen = new GaussianSharpen();
gaussianSharpen.ApplyInPlace(bitmap);
}
return bitmap;
}
/// <summary>
/// Sharpen using a gaussian sharpen filter.
/// </summary>
public static Bitmap Sharpen(this Bitmap Bitmap)
{
// Convert grayscale to RGB colour space.
if ((Bitmap = Bitmap.Channel()) != null) {
// Initialize a new instance of the GaussianSharpen class.
var GaussianSharpen = new GaussianSharpen();
// Apply the filter to the image.
GaussianSharpen.ApplyInPlace(Bitmap);
}
// Return the bitmap.
return Bitmap;
}
