SetupFaceDetectingData

SetupFaceDetectingData.m

- (void)setupData {
    NSDictionary *detectorOptions = [[NSDictionary alloc] initWithObjectsAndKeys:
                                     CIDetectorAccuracyLow, CIDetectorAccuracy,
                                     nil];
    self._faceDetector = [CIDetector detectorOfType:CIDetectorTypeFace
                                      context:nil
                                      options:detectorOptions];
}