private Bitmap ProcessImage(Bitmap image)
{
// set up Dlib facedetectors and shapedetectors
using (var fd = FrontalFaceDetector.GetFrontalFaceDetector())
using (var sp = new ShapePredictor("shape_predictor_68_face_landmarks.dat"))
{
// convert image to dlib format
var img = image.ToArray2D <RgbPixel>();
// detect faces
var faces = fd.Detect(img);
// detect facial landmarks
foreach (var rect in faces)
{
// detect facial landmarks
var shape = sp.Detect(img, rect);
// extract face chip
var chip = Dlib.GetFaceChipDetails(shape);
var thumbnail = Dlib.ExtractImageChips <RgbPixel>(img, chip);
// add picturebox
var box = new PictureBox()
{
Image = thumbnail.ToBitmap <RgbPixel>(),
SizeMode = PictureBoxSizeMode.Zoom,
Width = 62,
Height = 62
};
imagesPanel.Controls.Add(box);
// draw landmarks on main image
var lines = Dlib.RenderFaceDetections(new FullObjectDetection[] { shape });
foreach (var line in lines)
{
Dlib.DrawRectangle(
img,
new DlibDotNet.Rectangle(line.Point1),
new RgbPixel {
Green = 255
},
8);
}
}
return(img.ToBitmap <RgbPixel>());
}
}
private void BackgroundWorkerOnDoWork(object sender, DoWorkEventArgs doWorkEventArgs)
{
var path = doWorkEventArgs.Argument as string;
if (string.IsNullOrWhiteSpace(path) || !File.Exists(path))
{
return;
}
using (var faceDetector = Dlib.GetFrontalFaceDetector())
using (var img = Dlib.LoadImage <RgbPixel>(path))
{
Dlib.PyramidUp(img);
var dets = faceDetector.Operator(img);
var shapes = new List <FullObjectDetection>();
foreach (var rect in dets)
{
var shape = this._ShapePredictor.Detect(img, rect);
if (shape.Parts <= 2)
{
continue;
}
shapes.Add(shape);
}
if (shapes.Any())
{
var lines = Dlib.RenderFaceDetections(shapes);
foreach (var line in lines)
{
Dlib.DrawLine(img, line.Point1, line.Point2, new RgbPixel
{
Green = 255
});
}
var wb = img.ToBitmap();
this.pictureBoxImage.Image?.Dispose();
this.pictureBoxImage.Image = wb;
foreach (var l in lines)
{
l.Dispose();
}
var chipLocations = Dlib.GetFaceChipDetails(shapes);
using (var faceChips = Dlib.ExtractImageChips <RgbPixel>(img, chipLocations))
using (var tileImage = Dlib.TileImages(faceChips))
{
// It is NOT necessary to re-convert WriteableBitmap to Matrix.
// This sample demonstrate converting managed image class to
// dlib class and vice versa.
using (var tile = tileImage.ToBitmap())
using (var mat = tile.ToMatrix <RgbPixel>())
{
var tile2 = mat.ToBitmap();
this.pictureBoxTileImage.Image?.Dispose();
this.pictureBoxTileImage.Image = tile2;
}
}
foreach (var c in chipLocations)
{
c.Dispose();
}
}
foreach (var s in shapes)
{
s.Dispose();
}
}
}
