System.Drawing.Bitmap Decaptcha(BlockOcr blockOcr, BotData data)
{
using (var captcha = blockOcr.Base64ImageDecoder(ReplaceValues(Base64Captcha, data)))
{
using (var src = captcha.ToMat())
{
using (var binaryMask = new Mat())
{
var linesColor = Scalar.FromRgb(0x74, 0x74, 0x74);
Cv2.InRange(src, linesColor, linesColor, binaryMask);
using (var masked = new Mat())
{
src.CopyTo(masked, binaryMask);
int linesDilate = 3;
using (var element = Cv2.GetStructuringElement(MorphShapes.Ellipse, new Size(linesDilate, linesDilate)))
{
Cv2.Dilate(masked, masked, element);
}
try
{
Cv2.CvtColor(masked, masked, ColorConversionCodes.RGB2GRAY);
}
catch { }
using (var dst = src.EmptyClone())
{
Cv2.Inpaint(src, masked, dst, 3, InpaintMethod.NS);
linesDilate = 2;
using (var element = Cv2.GetStructuringElement(MorphShapes.Ellipse, new Size(linesDilate, linesDilate)))
{
Cv2.Dilate(dst, dst, element);
}
Cv2.GaussianBlur(dst, dst, new Size(5, 5), 0);
using (var dst2 = dst.BilateralFilter(5, 75, 75))
{
try
{
Cv2.CvtColor(dst2, dst2, ColorConversionCodes.RGB2GRAY);
}
catch { }
Cv2.Threshold(dst2, dst2, 255, 255, ThresholdTypes.Otsu);
Cv2.FastNlMeansDenoising(dst2, dst2, 44);
return(dst2.ToBitmap().Clone() as System.Drawing.Bitmap);
}
}
}
}
}
}
}
public override void Process(BotData data)
{
base.Process(data);
var blockOcr = new BlockOcr();
using (var captcha = Decaptcha(blockOcr, data))
{
using (var pix = PixConverter.ToPix(captcha.ConvertPixelFormat(System.Drawing.Imaging.PixelFormat.Format24bppRgb)))
{
InsertVariable(data, false, blockOcr.GetOcr(data, pix).First(),
InputVariableName);
}
}
}
public PageBlockOcr(BlockOcr block)
{
InitializeComponent();
vm = block;
DataContext = vm;
customHeadersRTB.AppendText(vm.GetCustomHeaders());
try
{
foreach (var filter in vm.GetFilters().Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries))
{
filterLB.Items.Add(filter.Trim());
}
}
catch { }
vm.PixelFormats.Add("Default");
vm.PixelFormats.AddRange(Enum.GetNames(typeof(System.Drawing.Imaging.PixelFormat)));
Enum.GetNames(typeof(EngineMode)).ToList().ForEach(e => EngineModeComboBox.Items.Add(e));
Enum.GetNames(typeof(PageSegMode)).ToList().ForEach(p => PageSegModeComboBox.Items.Add(p));
InitFilterControls();
SetItemToComboBox();
}
