public static void Capture(IntPtr handle, Point pos, Size size, ref OCRCapture ocrCapture, bool debug = false)
{
if (handle == IntPtr.Zero)
{
return;
}
Bitmap b = CaptureWindowArea(handle, pos, size);
if (b == null)
{
return;
}
if (debug)
{
Directory.CreateDirectory(Application.StartupPath + @"\debug");
}
if (debug)
{
b.Save(Application.StartupPath + @"\debug\00_input.png");
}
using (Pix pixc = PixConverter.ToPix(b)) {
b.Dispose();
using (Pix pixg = pixc.ConvertRGBToGray(0, 0, 0)) {
if (debug)
{
pixg.Save(Application.StartupPath + @"\debug\01_grayscale.png");
}
using (Pix pixs = pixg.ScaleGrayLI(Config.OCRScaleFactor, Config.OCRScaleFactor)) {
if (debug)
{
pixs.Save(Application.StartupPath + @"\debug\02_scale.png");
}
//pix = pix.UnsharpMaskingGray(5, 2.5f); //issues with light text on light bg
using (Pix pixb = pixs.BinarizeOtsuAdaptiveThreshold(2000, 2000, 0, 0, 0.0f)) {
if (debug)
{
pixb.Save(Application.StartupPath + @"\debug\03_binarize.png");
}
float pixAvg = pixb.AverageOnLine(0, 0, pixb.Width - 1, 0, 1);
pixAvg += pixb.AverageOnLine(0, pixb.Height - 1, pixb.Width - 1, pixb.Height - 1, 1);
pixAvg += pixb.AverageOnLine(0, 0, 0, pixb.Height - 1, 1);
pixAvg += pixb.AverageOnLine(pixb.Width - 1, 0, pixb.Width - 1, pixb.Height - 1, 1);
pixAvg /= 4.0f;
using (Pix pixi = pixAvg > 0.5f ? pixb.Invert() : pixb) {
if (debug)
{
pixi.Save(Application.StartupPath + $@"\debug\04_invert_{pixAvg > 0.5f}.png");
}
using (Pix pixn = pixi.SelectBySize(Config.OCRNoiseSize, Config.OCRNoiseSize, Config.OCRNoiseConnectivity, Config.OCRNoiseType, Config.OCRNoiseRelation)) {
if (debug)
{
pixn.Save(Application.StartupPath + @"\debug\05_removenoise.png");
}
//pixn.ClipToForeground(IntPtr.Zero);
using (Pix pix = pixn.AddBorder(Config.OCRPadding, 0)) {
if (debug)
{
pix.Save(Application.StartupPath + @"\debug\06_border.png");
}
pix.XRes = 300;
pix.YRes = 300;
using (Page page = Engine.Process(pix, PageSegMode.SingleLine)) {
ocrCapture.Text = page.GetText().Trim();
ocrCapture.Confidence = page.GetMeanConfidence();
ocrCapture.Iterations++;
if (ocrCapture.Confidence >= Config.OCRMinimumConfidence)
{
if (decimal.TryParse(ocrCapture.Text, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture, out decimal cooldown))
{
if (cooldown < Config.CooldownMaxPossible)
{
ocrCapture.Cooldown = cooldown;
}
}
}
}
}
}
}
}
}
}
}
}