Are There Qualitative Differences between Face Processing in Photographic Positive and Negative?

  title={Are There Qualitative Differences between Face Processing in Photographic Positive and Negative?},
  author={Chang Hong Liu and Avi Chaudhuri},
  pages={1107 - 1122}
The question whether face recognition in photographic negative relies more on external features and pictorial cues than in photographic positive was studied in five experiments. Recognition of whole faces as well as both external and internal features of the faces was compared in experiments 1 and 2. The conditions in which views of faces between learning and test were either identical (hence providing maximum pictorial cues) or different (hence reducing such cues) were compared in experiments… 

Figures from this paper

The importance of internal facial features in learning new faces

The results suggest that the internal features play an important role in the generalization between different images of an individual's face by enabling the viewer to detect the common identity-diagnostic elements across non-identical instances of the face.

Effect of Photographic Negation on Matching the Expressions and Identities of Faces

The independence of this irrelevant-dimension effect from the contrast effect supports the conclusion required by the main finding—that negation slows perceptual encoding of surface-based Information used for identification more than it does encoding of edge-based information used for expression recognition.

Face recognition with perspective transformation

A combinatorial study of pose effects in unfamiliar face recognition

Learning faces from photographs.

All experiments provided evidence for image-specific picture learning taking place over and above any invariant face learning, with recognition accuracy always highest for the image studied and performance falling across transformations between study and test images.

Exploring the Motion Advantage: Evaluating the Contribution of Familiarity and Differences in Facial Motion

Findings suggest that faces rated as moving a lot and in a distinctive manner benefited the most from being seen in motion, and indicate that facial motion information becomes a more important cue to recognition the more familiar a face is.

When Feature Information Comes First! Early Processing of Inverted Faces

Investigation of the early stages of face recognition and the role of featural and holistic face information exploited the fact that, on inversion, the alienating disorientation of the eyes and mouth in thatcherised faces is hardly detectable to test specific face-processing hypotheses.



Face Recognition with Multi-Tone and Two-Tone Photographic Negatives

The results show that contrast incongruency between learning and testing is the predominant factor affecting performance and that deficits in sensory coding or retention of negative face images are unlikely to be major factors.

Recognition memory for photographs of faces.

The results indicate that recognition accuracy for faces is better than for patterns of identical geometrical complexity and that this superiority rests at least in part on information that becomes inaccessible when a photograph is inverted or its brightness relations reversed.

Perception and Recognition of Normal and Negative Faces: The Role of Shape from Shading and Pigmentation Cues

The results of three experiments suggest that although changes to the apparent pigmentation of a face might result in identification errors in some situations, the loss of shape-from-shading cues is a more important cause of the negation effect.

Sensitivity to the Displacement of Facial Features in Negative and Inverted Images

Experiments were reported in which a two-alternative forced-choice technique was used to measure sensitivity for distinguishing faces which have been modified by having the eyes moved vertically or horizontally, which suggests that a facial surround is necessary.

What Is Special about Face Recognition? Nineteen Experiments on a Person with Visual Object Agnosia and Dyslexia but Normal Face Recognition

It is concluded that face recognition normally depends on two systems: a holistic, face-specific system that is dependent on orientationspecific coding of second-order relational features (internal) and a part-based object-recognition system, which is damaged in CK and which contributes to face recognition when the face stimulus does not satisfy the domain-specific conditions needed to activate the face system.

Identification of Familiar and Unfamiliar Faces from Internal and External Features: Some Implications for Theories of Face Recognition

It is argued that the internal representation for familiar faces may be qualitatively different from that for faces seen just once and some advantage in feature saliency may accrue to the internal or ‘expressive’ features of familiar faces.

Matching Familiar and Unfamiliar Faces on Internal and External Features

The study confirms reports of differential saliency of the internal features of familiar faces and shows that this only holds when stimuli are treated as faces, and reflects properties of structural rather than pictorial codes.

Features and their configuration in face recognition

For normal faces, altering the spatial location of the eyes not only impaired subjects’ recognition of the eye features but also impaired their Recognition of the nose and mouth features—features whose spatial locations were not directly altered.

Why are faces hard to recognize in photographic negative?

Faces may be difficult to recognize in photographic negative simply because they contain a large range of grays, while printed words and geometric shapes, which contain no grays, are easy to