private bool TryToDetectFaceAndResizeImage(KeyValuePair <string, EPiFaceImageAttribute> faceImagePropertyDef, ImageData image, Image imageDetails, out byte[] faceResizedImage)
{
faceResizedImage = null;
IList <DetectedFace> detectedFaces = FaceRecognitionService.DetectFace(image.BinaryData);
if (detectedFaces?.Count == 0)
{
return(false);
}
DetectedFace firstFace = detectedFaces.FirstOrDefault();
FaceImageDimensions faceImageDimensions = new FaceImageDimensions(firstFace, faceImagePropertyDef.Value.FacePercentage, imageDetails);
faceResizedImage = ImageResizeService.CutAndResizeImage(image.BinaryData.ReadAllBytes(), faceImageDimensions, faceImagePropertyDef.Value.Width, faceImagePropertyDef.Value.Height);
return(true);
}
internal static byte[] CutImage(Image image, FaceImageDimensions imageDimensions)
{
var destRect = new Rectangle(0, 0, imageDimensions.Width, imageDimensions.Height);
var destImage = new Bitmap(imageDimensions.Width, imageDimensions.Height);
destImage.SetResolution(image.HorizontalResolution, image.VerticalResolution);
using (var graphics = Graphics.FromImage(destImage))
{
graphics.CompositingMode = CompositingMode.SourceCopy;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
using (var wrapMode = new ImageAttributes())
{
wrapMode.SetWrapMode(WrapMode.TileFlipXY);
graphics.DrawImage(image, destRect, imageDimensions.MinX, imageDimensions.MinY, imageDimensions.Width, imageDimensions.Height, GraphicsUnit.Pixel, wrapMode);
}
}
return(destImage.BitmapToByteArray());
}
internal static byte[] CutImage(byte[] image, FaceImageDimensions imageDimensions)
{
return(CutImage(image.ByteArrayToImage(), imageDimensions));
}
internal static byte[] CutAndResizeImage(byte[] image, FaceImageDimensions imageDimensions, int outputWidth, int outputHeight)
{
return(CutAndResizeImage(image.ByteArrayToImage(), imageDimensions, outputWidth, outputHeight));
}
internal static byte[] CutAndResizeImage(Image image, FaceImageDimensions imageDimensions, int outputWidth, int outputHeight)
{
byte[] faceOnly = CutImage(image, imageDimensions);
return(ResizeImage(faceOnly, outputWidth, outputHeight));
}
