private static void TakeScreenshot(Form form,
string destinationFile,
string destinationFileInverted)
{
if (File.Exists(destinationFile))
{
File.Delete(destinationFile);
}
if (File.Exists(destinationFileInverted))
{
File.Delete(destinationFileInverted);
}
using (var destinationBitmap = new Bitmap(form.Width, form.Height))
{
form.DrawToBitmap(destinationBitmap, new Rectangle(0, 0, destinationBitmap.Width, destinationBitmap.Height));
destinationBitmap.Save(destinationFile);
using (var grayScaleImage = GrayScaleImageHelper.ToGrayScale(destinationBitmap))
{
var bounds = new Rectangle(0, 0, grayScaleImage.Width, grayScaleImage.Height);
BitmapData bitmapData = grayScaleImage.LockBits(bounds, ImageLockMode.ReadOnly, grayScaleImage.PixelFormat);
var grayScaleHW = new byte[grayScaleImage.Height * bitmapData.Stride];
Marshal.Copy(bitmapData.Scan0, grayScaleHW, 0, grayScaleImage.Height * bitmapData.Stride);
var stride = bitmapData.Stride;
grayScaleImage.UnlockBits(bitmapData);
GrayScaleImageHelper.Invert(grayScaleHW, stride, grayScaleImage.Width, grayScaleImage.Height);
var data = GrayScaleImageHelper.FromData2(grayScaleImage.Width, grayScaleImage.Height, stride, grayScaleHW);
File.WriteAllBytes(destinationFileInverted, data);
}
}
}
protected override string ProcessInternal(Bitmap bitmap)
{
using (var grayScaleImage = GrayScaleImageHelper.ToGrayScale(bitmap))
{
var bounds = new Rectangle(0, 0, grayScaleImage.Width, grayScaleImage.Height);
BitmapData bitmapData = grayScaleImage.LockBits(bounds, ImageLockMode.ReadOnly, grayScaleImage.PixelFormat);
var grayScaleHW = new byte[grayScaleImage.Height * bitmapData.Stride];
Marshal.Copy(bitmapData.Scan0, grayScaleHW, 0, grayScaleImage.Height * bitmapData.Stride);
var stride = bitmapData.Stride;
grayScaleImage.UnlockBits(bitmapData);
if (!_backgroundModel.IsOperational())
{
_backgroundModel.Train(grayScaleHW, grayScaleImage.Width, grayScaleImage.Height, stride);
if (_backgroundModel.IsOperational())
{
_interceptor.Intercept(MinIntensityBackgroundDebugView, GrayScaleImageHelper.FromData2(_backgroundModel._width, _backgroundModel._height, _backgroundModel._stride, _backgroundModel._minIntensity));
_interceptor.Intercept(MaxIntensityBackgroundDebugView, GrayScaleImageHelper.FromData2(_backgroundModel._width, _backgroundModel._height, _backgroundModel._stride, _backgroundModel._maxIntensity));
_interceptor.Intercept(MaxPerFrameDifferenceDebugView, GrayScaleImageHelper.FromData2(_backgroundModel._width, _backgroundModel._height, _backgroundModel._stride, _backgroundModel._maxPerFrameDifference));
}
return(null);
}
var foreground = GetForefround(grayScaleHW, grayScaleImage.Width, grayScaleImage.Height, stride);
//excluded, because does not work.
//ExcludeShadows(grayScaleHW, foreground, grayScaleImage.Width, grayScaleImage.Height, stride);
var temp = GrayScaleImageHelper.FromData(
_backgroundModel._width,
_backgroundModel._height,
_backgroundModel._stride,
foreground);
int countDetected = 0;
// create filter
var diamondMask = CreateClosingOpeningFileter();
Closing filter = new Closing(diamondMask);
Opening filter2 = new Opening(diamondMask);
// apply the filter
filter.ApplyInPlace(temp);
filter2.ApplyInPlace(temp);
_interceptor.Intercept(
XXX,
ImageHelper.ToBytes(temp));
// blobs!
var bc = new BlobCounter {
BackgroundThreshold = Color.FromArgb(254, 254, 254)
};
bc.ProcessImage(temp);
Rectangle[] rects = bc.GetObjectsRectangles();
var rectanglesToDraw = new List <Rectangle>();
foreach (Rectangle rect in rects)
{
if (rect.Width < _maximumDetectionWidthPixels &&
rect.Width > _minimumDetectionWidthPixels &&
rect.Height < _maximumDetectionHeightPixels &&
rect.Height > _minimumDetectionHeightPixels)
{
countDetected++;
rectanglesToDraw.Add(rect);
}
}
temp.Dispose();
_interceptor.Intercept(InputFrameDebugView, GrayScaleImageHelper.FromData2(_backgroundModel._width, _backgroundModel._height, _backgroundModel._stride, grayScaleHW));
_interceptor.Intercept(DifferenceDebugView, GrayScaleImageHelper.FromData2(_backgroundModel._width, _backgroundModel._height, _backgroundModel._stride, foreground));
using (Graphics graphics = Graphics.FromImage(bitmap))
using (var brush = new SolidBrush(Color.Red))
using (var pen = new Pen(brush, 3))
{
if (rectanglesToDraw.Any())
{
graphics.DrawRectangles(pen, rectanglesToDraw.ToArray());
}
_interceptor.Intercept(DetectedBlobDebugView, ImageHelper.ToBytes(bitmap));
}
if (countDetected > 0)
{
return("Alarm: " + countDetected);
}
}
return(null);
}