private void DetectFace()
{
string facePath;
try
{
// get face detect dataset
facePath = Path.GetFullPath(@"data/haarcascade_frontalface_default.xml");
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
CascadeClassifier classifierFace = new CascadeClassifier(facePath);
Image <Gray, byte> imgGrayCurr = CurrImageI.Convert <Gray, byte>().Clone();
Image <Gray, byte> imgGrayNext = NextImageI.Convert <Gray, byte>().Clone();
int minWidthCurr = (int)(CurrImageI.Width * HAAR_MIN_FACE_FACTOR);
int minHeightCurr = (int)(CurrImageI.Height * HAAR_MIN_FACE_FACTOR);
int maxWidthCurr = (int)(CurrImageI.Width * HAAR_MAX_FACE_FACTOR);
int maxHeightCurr = (int)(CurrImageI.Height * HAAR_MAX_FACE_FACTOR);
int minWidthNext = (int)(NextImageI.Width * HAAR_MIN_FACE_FACTOR);
int minWHeightNext = (int)(NextImageI.Height * HAAR_MIN_FACE_FACTOR);
int maxWidthNext = (int)(NextImageI.Width * HAAR_MAX_FACE_FACTOR);
int maxHeightNext = (int)(NextImageI.Height * HAAR_MAX_FACE_FACTOR);
System.Drawing.Size minSizeCurr = new System.Drawing.Size(minWidthCurr, minHeightCurr);
System.Drawing.Size maxSizeCurr = new System.Drawing.Size(maxWidthCurr, maxHeightCurr);
System.Drawing.Size minSizeNext = new System.Drawing.Size(minWidthNext, minWHeightNext);
System.Drawing.Size maxSizeNext = new System.Drawing.Size(maxWidthNext, maxHeightNext);
// Detect Faces
facesArrCurr = classifierFace.DetectMultiScale(imgGrayCurr, HAAR_SCALE_FACTOR, HAAR_SCALE_MIN_NEIGHBOURS, minSizeCurr, maxSizeCurr);
facesArrNext = classifierFace.DetectMultiScale(imgGrayNext, HAAR_SCALE_FACTOR, HAAR_SCALE_MIN_NEIGHBOURS, minSizeNext, maxSizeNext);
FacesListCurr = facesArrCurr.ToList <Rectangle>();
FacesListNext = facesArrNext.ToList <Rectangle>();
}
private void ResizeImage2(System.Drawing.Size sizeOfImage)
{
double resizeFactor = 0.4;
if (facesArrCurr.Length > 0 && facesArrNext.Length > 0)
{
Rectangle rectCurr = facesArrCurr[0]; // todo: change
int widthC = rectCurr.Width;
widthC = (int)(widthC * resizeFactor);
int heightC = rectCurr.Height;
heightC = (int)(heightC * resizeFactor);
rectCurr.Inflate(widthC, heightC);
CurrImageI.ROI = rectCurr;
Rectangle rectNext = facesArrNext[0];
int widthN = rectNext.Width;
widthN = (int)(widthN * resizeFactor);
int heightN = rectNext.Height;
heightN = (int)(heightN * resizeFactor);
rectNext.Inflate(widthN, heightN);
NextImageI.ROI = rectNext;
}
// --------------------------------------
// resize image: todo -> do while morphing, not during face detect step (maybe)
System.Drawing.Size currImageSize = new System.Drawing.Size(CurrImageI.Width, CurrImageI.Height);
System.Drawing.Size nextImageSize = new System.Drawing.Size(NextImageI.Width, NextImageI.Height);
// downscale to 1080p
if (currImageSize.Height > 1080 || currImageSize.Width > 1920)
{
var tmp = CurrImageI.Mat;
currImageMat = GetSquareImage(tmp, 1920);
CurrImageI = currImageMat.ToImage <Bgr, byte>();
}
if (nextImageSize.Height > 1080 || nextImageSize.Width > 1920)
{
var tmp = NextImageI.Mat;
nextImageMat = GetSquareImage(tmp, 1920);
NextImageI = nextImageMat.ToImage <Bgr, byte>();
}
if (currImageSize.Height > nextImageSize.Height || currImageSize.Width > nextImageSize.Width)
{
var tmp = CurrImageI.Mat;
currImageMat = GetSquareImage(tmp, NextImageI.Width);
CurrImageI = currImageMat.ToImage <Bgr, byte>();
}
else
{
var tmp = NextImageI.Mat;
nextImageMat = GetSquareImage(tmp, CurrImageI.Width);
NextImageI = nextImageMat.ToImage <Bgr, byte>();
}
// -> resize
CurrImageI = CurrImageI.Resize(sizeOfImage.Width, sizeOfImage.Height, Emgu.CV.CvEnum.Inter.Linear);
NextImageI = NextImageI.Resize(sizeOfImage.Width, sizeOfImage.Height, Emgu.CV.CvEnum.Inter.Linear);
this.curr.ResizedImage = CurrImageI;
this.next.ResizedImage = NextImageI;
}
