public FaceRetrieveResult FindFace(Mat image)
{
int size = Math.Min(image.Height, image.Width) / 8;
Rectangle[] faces = faceClassifier.DetectMultiScale(image, 1.15, 7, new Size(size, size));
if (faces.Length <= 0)
{
return(FaceRetrieveResult.EmptyResult);
}
return(new FaceRetrieveResult(true, RectangleHelper.GetMaximumRectangle(faces)));
}
public void DetectFace(Mat mat, out FaceRetrieveResult face, out EyeRetrieveResult eye)
{
Rectangle[] faceDetected = faceClassifier.DetectMultiScale(mat, faceScaleFactor, faceMinNeighbors, faceMinSize);
if (faceDetected.Length <= 0)
{
face = FaceRetrieveResult.EmptyResult;
eye = EyeRetrieveResult.EmptyResult;
return;
}
Rectangle largestFace = RectangleHelper.GetMaximumRectangle(faceDetected);
face = new FaceRetrieveResult(true, largestFace);
searchRegionExtractor.GetSearchRegion(largestFace, out Rectangle leftSearchRegion, out Rectangle rightSearchRegion);
leftSearchRegion.Offset(largestFace.X, largestFace.Y);
rightSearchRegion.Offset(largestFace.X, largestFace.Y);
bool hasLeftEye = false;
Rectangle leftEyeRegion = default;
using (Mat eyeSearchRegion = new Mat(mat, leftSearchRegion))
{
Rectangle[] eyesDetected = eyeClassifier.DetectMultiScale(eyeSearchRegion, eyeScaleFactor, eyeMinNeighbors, eyeMinSize);
if (eyesDetected.Length > 0)
{
hasLeftEye = true;
leftEyeRegion = RectangleHelper.GetMaximumRectangle(eyesDetected);
leftEyeRegion.Offset(leftSearchRegion.X, leftSearchRegion.Y);
}
}
bool hasRightEye = false;
Rectangle rightEyeRegion = default;
using (Mat eyeSearchRegion = new Mat(mat, rightSearchRegion))
{
Rectangle[] eyesDetected = eyeClassifier.DetectMultiScale(eyeSearchRegion, eyeScaleFactor, eyeMinNeighbors, eyeMinSize);
if (eyesDetected.Length > 0)
{
hasRightEye = true;
rightEyeRegion = RectangleHelper.GetMaximumRectangle(eyesDetected);
rightEyeRegion.Offset(rightSearchRegion.X, rightSearchRegion.Y);
}
}
eye = new EyeRetrieveResult(hasLeftEye, leftEyeRegion, hasRightEye, rightEyeRegion);
}
