public double GetPercentageOfSkinInImage(string filePath, string debugImageFilePath = null)
{
using (IplImage imgSrc = new IplImage(filePath))
{
using (CvMemStorage storage = new CvMemStorage())
{
CvRect rect;
using (IplImage imgGray = new IplImage(filePath, LoadMode.GrayScale))
{
rect = FindBorder(imgGray);
}
if (rect.Width < imgSrc.Width * 0.10 || rect.Height < imgSrc.Height * 0.10)
{
rect = new CvRect(0, 0, imgSrc.Width, imgSrc.Height);
}
using (var subImg = imgSrc.GetSubImage(rect))
{
using (IplImage imgHueMask = new IplImage(subImg.Size, BitDepth.U8, 1))
{
CvAdaptiveSkinDetector detector = new CvAdaptiveSkinDetector(1, MorphingMethod.ErodeDilate);
detector.Process(subImg, imgHueMask);
int count = CountSkinPoints(imgHueMask, CvColor.White);
var percent = ((double)count / (double)(subImg.Width * subImg.Height) * 100);
if (debugImageFilePath != null)
{
imgHueMask.SaveImage(debugImageFilePath);
}
return(percent);
}
}
}
}
}
public DiffContainer GetDiffs(Bitmap newFrame, int compressRate)
{
IplImage Frame = BitmapConverter.ToIplImage(newFrame);
if (_oldImage == null || _oldImage.Height != newFrame.Height)
{
_oldImage = new Bitmap(newFrame.Width, newFrame.Height);
}
IplImage Previous_Frame = BitmapConverter.ToIplImage(_oldImage);
IplImage Difference = new IplImage(Previous_Frame.Width, Previous_Frame.Height, BitDepth.U8, 4);
Cv.AbsDiff(Frame, Previous_Frame, Difference);
IplImage gray = new IplImage(Previous_Frame.Width, Previous_Frame.Height, BitDepth.U8, 1);
Cv.CvtColor(Difference, gray, ColorConversion.RgbToGray);
DiffContainer container = new DiffContainer();
CvSeq <CvPoint> contours;
CvSeq <CvPoint> contour;
using (CvMemStorage storage = new CvMemStorage())
for (int i = gray.FindContours(storage, out contours, CvContour.SizeOf, ContourRetrieval.External, ContourChain.ApproxSimple); contours != null; contours = contours.HNext)
{
contour = Cv.ApproxPoly(contours, CvContour.SizeOf, storage, ApproxPolyMethod.DP, 0.2);
if (contour.ContourPerimeter() > 100 &&
contour.ContourPerimeter() < 10000
)
{
var r = contour.BoundingRect();
var im = Frame.GetSubImage(r);
Rectangle rect = new Rectangle(r.X, r.Y, r.Width, r.Height);
rect.X -= 1;
rect.Y -= 1;
rect.Width += 2;
rect.Height += 2;
var j = BitmapConverter.ToBitmap(im);
container.Data.Add(rect, j);
}
}
UpdateOldFrame(container);
return(container);
}
static IplImage GetCountours(IplImage src)
{
CvMemStorage mem = Cv.CreateMemStorage(0);
CvSeq <CvPoint> firstContour = null;
IplImage dst = GetThresholdImage(src);
dst = GetThresholdImage(dst);
int count = dst.FindContours(mem, out firstContour);
//src.DrawContours(firstContour, CvColor.Green, CvColor.Blue, 2);
//src.DrawRect(firstContour.BoundingRect(), CvColor.Red);
src = src.GetSubImage(firstContour.BoundingRect());
mem.Dispose();
firstContour.Dispose();
dst.Dispose();
return(src);
}
public IplImage getFaceImage(IplImage image)
{
Mat mat = new Mat(image);
var faces = cascade.DetectMultiScale(mat);
if (faces.Length > 0)
{
int id = 0;
int maxArea = 0;
for (int i = 0; i < faces.Length; i++)
{
if (faces[i].Width * faces[i].Height > maxArea)
{
id = i;
maxArea = faces[i].Width * faces[i].Height;
}
}
image = image.GetSubImage(faces[id]);
}
return(image);
}
private FaceImage FaceDetect(FaceImage faceImage)
{
if (faceImage.FullName == null || File.Exists(faceImage.FullName) == false || faceImage.FullName == string.Empty)
{
throw new ArgumentException("Image's path is not valid: {0}.", faceImage.FullName);
}
var facesDir = CreateDirByShortName(Strings.Face_Database_Folder_Name);
var fullName = CreateFaceFileFullName(faceImage, facesDir);
faceImage.FullName = fullName;
if (File.Exists(fullName))
{
return(faceImage);
}
try
{
using (IplImage img = new IplImage(faceImage.FullName, LoadMode.AnyColor))
{
using (IplImage smallImg = new IplImage(new CvSize(Cv.Round(img.Width / Scale), Cv.Round(img.Height / Scale)), BitDepth.U8, 1))
{
using (IplImage gray = new IplImage(img.Size, BitDepth.U8, 1))
{
Cv.CvtColor(img, gray, ColorConversion.BgrToGray);
Cv.Resize(gray, smallImg, Interpolation.Linear);
Cv.EqualizeHist(smallImg, smallImg);
}
//using (CvHaarClassifierCascade cascade = Cv.Load<CvHaarClassifierCascade>(Const.XmlHaarcascade))
using (CvHaarClassifierCascade cascade = CvHaarClassifierCascade.FromFile(Constants.FaceCascadeDefFileName))
using (CvMemStorage storage = new CvMemStorage())
{
storage.Clear();
Stopwatch watch = Stopwatch.StartNew();
CvSeq <CvAvgComp> faces = Cv.HaarDetectObjects(smallImg, cascade, storage, /*1.2*/ ScaleFactor, MinNeighbors, 0, new CvSize(30, 30));//(30,30)
watch.Stop();
DetectionTime = watch.ElapsedMilliseconds; //detection time (ms)
for (int i = 0; i < faces.Total; i++)
{
CvRect r = faces[i].Value.Rect;
//CvPoint center = new CvPoint
//{
// X = Cv.Round((r.X + r.Width * 0.5) * Scale),
// Y = Cv.Round((r.Y + r.Height * 0.5) * Scale)
//};
//int radius = Cv.Round((r.Width + r.Height) * 0.25 * Scale);
//img.Circle(center, radius, new CvColor(0, 0, 255), 3, LineType.AntiAlias, 0);
smallImg.ROI = new CvRect(r.X, r.Y, r.Width, r.Height);
IplImage subImage = smallImg.GetSubImage(smallImg.ROI);
_face = BitmapConverter.ToBitmap(subImage);
FaceImage newFaceImage = SaveFace(faceImage);
return(newFaceImage);
}
}
}
}
}
catch (Exception ex)
{
bool rethrow = ExceptionPolicy.HandleException(ex, "BusinessLogin Policy");
if (rethrow)
{
throw;
}
MessageBox.Show(string.Format("Failed to separate face from image"));
}
return(null);
}
