public static Image <Gray, byte> DetectAndTrimFace(int[] pixels, Size initialSize, Size outputSize, String haarcascadePath)
{
var inBitmap = ConvertToBitmap(pixels, initialSize.Width, initialSize.Width);
//for testing purposes I can the picture to a folder
//inBitmap.Save(@"E:\data\phototest\received.bmp");
var grayframe = new Image <Gray, byte>(inBitmap);
var haar = new HaarCascade(haarcascadePath);
var faces = haar.Detect(grayframe,
1.2,
3,
HAAR_DETECTION_TYPE.DO_CANNY_PRUNING,
new Size(30, 30));
if (faces.Count() != 1)
{
return(null);
}
var face = faces[0];
var returnImage = grayframe.Copy(face.rect).Resize(outputSize.Width, outputSize.Height, INTER.CV_INTER_CUBIC);
//cleanup managed resources
haar.Dispose();
grayframe.Dispose();
return(returnImage);
}
public void Dispose()
{
_faceCascade.Dispose();
}