public static Rectangle ToRectangle(this Region2D region)
{
return(new Rectangle(new Point(region.Location.X, region.Location.Y), new Size(region.Width, region.Height)));
}
public static FaceRegion2D[] GetFaceRegion2Ds(Image<Bgr, byte> image,
int faceWidth, int faceHeight, bool findEyes = true, bool findMouthRegions = true)
{
var ret = new List<FaceRegion2D>();
var parameter = new PrepareImageParameter
{
};
using (var gray = FilterInstances.PrepareFilter.GetResult(image, parameter))
{
foreach (var faceRegion in FilterInstances.FaceFilter.GetResult(gray, new FacePartParameter
{
MinWidth = faceWidth,
MinHeight = faceHeight
}))
{
Region2D leftEyeRegion = null;
Region2D rightEyeRegion = null;
Region2D mouthRegion = null;
double angle = 0;
IImage faceImage = null;
using (var cropFace = FilterInstances.CropFilter.GetResult(gray, new CropParameter { Region = faceRegion }))
{
#region Face parts detection
if (findEyes)
{
#region Detect Eyes
#region Left
var leftRegion = new Region2D
{
Location = new Point
{
X = 0,
Y = 0
},
Width = faceRegion.Width / 2,
Height = faceRegion.Height / 2
};
var leftEyes = FilterInstances.EyeFilter.GetResult
(cropFace, new FacePartParameter { Region = leftRegion });
if (leftEyes.Any())
{
leftEyeRegion = new Region2D
{
Location = new Point
{
X = (int)leftEyes.Average(item => item.Location.X) + leftRegion.Location.X,
Y = (int)leftEyes.Average(item => item.Location.Y) + leftRegion.Location.Y
},
Width = (int)leftEyes.Average(item => item.Width),
Height = (int)leftEyes.Average(item => item.Height)
};
}
#endregion
#region Right
var rightRegion = new Region2D
{
Location = new Point
{
X = faceRegion.Width / 2,
Y = 0,
},
Width = faceRegion.Width / 2,
Height = faceRegion.Height / 2
};
var rightEyes = FilterInstances.EyeFilter.GetResult
(cropFace, new FacePartParameter { Region = rightRegion });
if (rightEyes.Any())
{
rightEyeRegion = new Region2D
{
Location = new Point
{
X = (int)rightEyes.Average(item => item.Location.X) + rightRegion.Location.X,
Y = (int)rightEyes.Average(item => item.Location.Y) + rightRegion.Location.Y
},
Width = (int)rightEyes.Average(item => item.Width),
Height = (int)rightEyes.Average(item => item.Height)
};
}
#endregion
#endregion
#region Calculate Face Angle
if (leftEyeRegion != null
&& rightEyeRegion != null)
{
int yCoord = (rightEyeRegion.Location.Y + rightEyeRegion.Height / 2)
- (leftEyeRegion.Location.Y + leftEyeRegion.Height / 2);
int xCoord = (rightEyeRegion.Location.X + rightEyeRegion.Width / 2 + leftRegion.Width)
- (leftEyeRegion.Location.X + leftEyeRegion.Width / 2);
// calc rotation angle in radians
angle = -Math.Atan2(yCoord, xCoord) * (180.0 / Math.PI);
}
#endregion
}
if (findMouthRegions)
{
#region Mouth
var mouthSearchRegion = new Region2D
{
Location = new Point
{
X = 0,
Y = faceRegion.Height / 2
},
Width = faceRegion.Width,
Height = faceRegion.Height / 2
};
var mouths = FilterInstances.MouthFilter.GetResult(cropFace, new FacePartParameter
{
Region = mouthSearchRegion
});
if (mouths.Any())
{
mouthRegion = new Region2D
{
Location = new Point
{
X = (int)mouths.Average(item => item.Location.X) + mouthSearchRegion.Location.X,
Y = (int)mouths.Average(item => item.Location.Y) + mouthSearchRegion.Location.Y
},
Width = (int)mouths.Average(item => item.Width),
Height = (int)mouths.Average(item => item.Height)
};
}
#endregion
}
#endregion
faceImage = FilterInstances.ResizeFilter.GetResult(cropFace, new ResizeParameter { NewHeight = faceHeight, NewWidth = faceWidth });
}
ret.Add(new FaceRegion2D
{
Face = faceRegion,
LeftEye = leftEyeRegion,
RightEye = rightEyeRegion,
Mouth = mouthRegion,
EyeAngle = angle,
FaceImage = (Image<Gray, byte>)faceImage,
SourceImage = (gray as Image<Gray, byte>) ?? ((GpuImage<Gray, byte>)gray).ToImage()
});
}
}
return ret.ToArray();
}
