pub unsafe static CIDetectorEyeBlink: &'static NSStringAvailable on crate feature
CIDetector only.Expand description
A dictionary key that configures a Core Image face feature detection operation to perform additional processing to recognize closed eyes in detected faces.
This option is used with /CIDetector/featuresInImage:options:
If the value of the key is true, then facial expressions such as blinking and smiles are extracted.
This is needed for the /CIFaceFeature/leftEyeClosed-property and /CIFaceFeature/rightEyeClosed-property to function.
See also Apple’s documentation