gistfile1.txt

/* ios version
NSDictionary *contextDict = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:@"kCIContextUseSoftwareRenderer"];

CIContext *ciContext = [CIContext contextWithOptions:contextDict];

NSDictionary *detectorDict = [NSDictionary dictionaryWithObject:@"CIDetectorAccuracyHigh" forKey:@"CIDetectorAccuracy"];

CIDetector *detector = [CIDetector detectorOfType:@"CIDetectorTypeFace" context:ciContext options:detectorDict];


CIImage *image = [[CIImage alloc] initWithImage:self.faceImage.image];
NSArray *features = [detector featuresInImage:image];
*/


	string imageFile = "IMG_0540.jpg";
			
			NSDictionary contextDict = NSDictionary.FromObjectAndKey(NSNumber.FromBoolean(false),new NSString("kCIContextUseSoftwareRenderer"));
			
			NSDictionary detectorOptions =  NSDictionary.FromObjectAndKey(new NSString("CIDetectorAccuracyHigh"),new NSString("CIDetectorAccuracy"));
			
			
			
			CIContext context = CIContext.FromOptions(contextDict);
			CIDetector detector = CIDetector.FromType("CIDetectorTypeFace",context,detectorOptions);
			var image = new UIImage(imageFile);
			var ciImage = CIImage.FromCGImage(image.CGImage);
			var features = detector.FeaturesInImage(ciImage);
			//detector.
			Console.WriteLine(features.Count());