public static CIDetector CreateFaceDetector (CIContext context, FaceDetectorAccuracy? accuracy = null, float? minFeatureSize = null, bool? trackingEnabled = null)
{
List<NSObject> keys = new List<NSObject> (3);
List<NSObject> values = new List<NSObject> (3);
if (accuracy != null) {
keys.Add (Accuracy);
values.Add (accuracy == FaceDetectorAccuracy.High ? AccuracyHigh : AccuracyLow);
}
// MinFeatureSize exists only in iOS6+, before this the field is null (and would throw if used)
if (MinFeatureSize != null && minFeatureSize != null) {
keys.Add (MinFeatureSize);
values.Add (new NSNumber (minFeatureSize.Value));
}
// Tracking exists only in iOS6+, before this the field is null (and would throw if used)
if (Tracking != null && trackingEnabled != null) {
keys.Add (Tracking);
values.Add (NSObject.FromObject (true));
}
using (var options = NSDictionary.FromObjectsAndKeys (values.ToArray (), keys.ToArray ()))
return FromType (TypeFace, context, options);
}
public static CIDetector CreateFaceDetector (CIContext context, bool highAccuracy)
{
// TypeFace is the only detector supported now
using (var options = NSDictionary.FromObjectsAndKeys (new NSObject [] { highAccuracy ? AccuracyHigh : AccuracyLow },
new NSObject [] { Accuracy }))
return FromType (TypeFace, context, options);
}
public static CIDetector CreateFaceDetector (CIContext context, bool highAccuracy, float minFeatureSize)
{
// MinFeatureSize exists only in iOS6+, before this the field is null (and would throw if used)
if (MinFeatureSize == null)
return CreateFaceDetector (context, highAccuracy);
// TypeFace is the only detector supported now
using (var options = NSDictionary.FromObjectsAndKeys (new NSObject [] { highAccuracy ? AccuracyHigh : AccuracyLow, new NSNumber (minFeatureSize) },
new NSObject [] { Accuracy, MinFeatureSize, }))
return FromType (TypeFace, context, options);
}
public static CIDetector CreateFaceDetector(CIContext context, FaceDetectorAccuracy? accuracy = null, float? minFeatureSize = null, bool? trackingEnabled = null)
{
List<NSObject> keys = new List<NSObject> (3);
List<NSObject> values = new List<NSObject> (3);
if (accuracy != null) {
keys.Add (Accuracy);
values.Add (accuracy == FaceDetectorAccuracy.High ? AccuracyHigh : AccuracyLow);
}
if (minFeatureSize != null) {
keys.Add (MinFeatureSize);
values.Add (new NSNumber (minFeatureSize.Value));
}
if (trackingEnabled != null) {
keys.Add (Tracking);
values.Add (NSObject.FromObject (true));
}
using (var options = NSDictionary.FromObjectsAndKeys (values.ToArray (), keys.ToArray ()))
return FromType (TypeFace, context, options);
}
private void InitializeImagingContext()
{
#if MONOTOUCH
if (ciContext == null)
ciContext = CIContext.FromOptions(null);
#else
if (ciContext == null)
ciContext = CIContext.FromContext (context);
#endif
}
