private Rect GetFaceRoiFastMat(Mat integralMask, Rect roi, int size, out double faceRatio)
{
var maxI = -1;
var maxJ = -1;
var max = 0.0;
var mat3 = new MatOfInt(integralMask);
var indexer = mat3.GetGenericIndexer <int>();
for (var i = roi.Y; i < roi.Y + roi.Height - size; i += 4)
{
for (var j = roi.X; j < roi.X + roi.Width - size; j += 4)
{
var maskI = i + 1;
var maskJ = j + 1;
var count = indexer[maskI + size - 1, maskJ + size - 1];
count -= indexer[maskI - 1, maskJ + size - 1];
count -= indexer[maskI + size - 1, maskJ - 1];
count += indexer[maskI - 1, maskJ - 1];
var ratio = count * 1.0 / (size * size);
if (ratio > max)
{
max = ratio;
maxI = i;
maxJ = j;
}
}
}
faceRatio = max;
if (maxI == -1)
{
return(Rect.Empty);
}
return(new Rect(maxJ, maxI, size, size));
}
private void ImgList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
int pos;
if (ImgList != null && ImgList.SelectedItem != null)
{
if (DetectList != null)
{
DetectList.Clear();
}
// var OriImageMat = new Mat(ImgList.SelectedItem.ToString());
var ThrImageMat = new Mat();
pos = ImgList.SelectedIndex;
//CurrentFN = ImgList.SelectedItem.ToString();
CurrentFN = fileEntries[pos];
Mat OriImageMat = new Mat(CurrentFN);
Mat GrayImage = OriImageMat.CvtColor(ColorConversionCodes.BGR2GRAY);
//int slideVal;
//int.TryParse(SliderValue, out slideVal);
Cv2.Threshold(GrayImage, ThrImageMat, int.Parse(SliderValue), 255, ThresholdTypes.Binary);
int[] mask = { 1, 1, 1,
1, 1, 1,
1, 1, 1 };
Mat kernel = new Mat(3, 3, MatType.CV_32F, mask);
Cv2.MorphologyEx(ThrImageMat, ThrImageMat, MorphTypes.Open, kernel);
Cv2.MorphologyEx(ThrImageMat, ThrImageMat, MorphTypes.Close, kernel);
Cv2.BitwiseNot(ThrImageMat, ThrImageMat);
var label = new MatOfInt();
var stats = new MatOfInt();
var centroids = new MatOfDouble();
var nLabels = Cv2.ConnectedComponentsWithStats(ThrImageMat, label, stats, centroids, PixelConnectivity.Connectivity8, MatType.CV_32S);
var statsIndexer = stats.GetGenericIndexer <int>();
for (int i = 0; i < nLabels; i++)
{
//Threshold줄때 일정크기 이하의 객체는 노이즈로 간주하고 패스
if (statsIndexer[i, 4] < 90)
{
continue;
}
var rect = new OpenCvSharp.Rect
{
X = statsIndexer[i, 0],
Y = statsIndexer[i, 1],
Width = statsIndexer[i, 2],
Height = statsIndexer[i, 3]
};
Cv2.Rectangle(OriImageMat, rect, new Scalar(33, 113, 243), 3);
obj temp = new obj();
//중심좌표 x,y (0 ~ 1)
temp.X = ((rect.X + rect.Width) / 2.0) / OriImageMat.Width;
temp.Y = ((rect.Y + rect.Height) / 2.0) / OriImageMat.Height;
temp.W = (double)rect.Width / (double)OriImageMat.Width;
temp.H = (double)rect.Height / (double)OriImageMat.Height;
DetectList.Add(temp);
}
OriginalImg.Source = OriImageMat.ToWriteableBitmap();
ThresholdImg.Source = ThrImageMat.ToWriteableBitmap();
}
}