We present a face recognition method using image sequence. As input we utilize plural face images rather than a `single-shot', so that the input re ects variation of facial expression and face direction. For the identi cation of the face, we essentially form a subspace with the image sequence and apply the Mutual Subspace Method in which the similarity is de ned by the angle between the subspac...

Illumination variation that occurs on face images degrades the performance of face recognition. In this paper, we propose a novel approach to handling illumination variation for face recognition. Since most human faces are similar in shape, we can find the shadow characteristics, which the illumination variation makes on the faces depending on the direction of light. By using these characterist...

Face recognition has received wide concern as a hot direction in recognition models. Due to a strong self-adaptive and mapping ability, traditional BP algorithm occupies certain advantages in face recognition, but is has the shortcomings of fast convergence speed and being easy to fall into local optimum in itself. In this paper, an improved BP neural network is proposed aiming at the deficienc...

In this paper, we propose an elegant approach for illumination invariant face recognition based on the photometric stereo technique. The basic idea is to reconstruct the surface normal and the albedo of a face using photometric stereo images, and then use them as the illumination independent model of the face. And, we have investigated the optimal light source directions for accurate surface sh...

In this paper, we propose a novel method for face recognition which uses the polar coordinate system instead of the conventional cartesian coordinate system. Among the central area of a face, we select a point as a pole and make a polar image of a face by evenly sampling pixels in each direction of 360 degrees around the pole. The polar coordinate system delineates near-pole area more vividly t...

In adults, facial identity is coded by opponent processes relative to an average face or norm, as evidenced by the face identity aftereffect: adapting to a face biases perception towards the opposite identity, so that a previously neutral face (e.g. the average) resembles the identity of the computationally opposite face. We investigated whether children as young as 8 use adaptive norm-based co...

Several studies have identified the importance of holistic information in face recognition. However, only few studies have investigated how it is influenced by changes of configuration. In Experiment 1, four faces were created by changing the distance between the eyes and the mouth. Participants evaluated the size of the face on three dimensions -- face length, face width and face range by usin...

Eye gaze is an important tool for social contact. In this study, we investigated whether direct gaze facilitates the recognition of three-dimensional face images in infants. We presented artificially produced face images in rotation to 6-8 month-old infants. The eye gaze of the face images was either direct or averted. Sixty-one sequential images of each face were created by rotating the vertic...

Adapting to a face shifts the perceived identity of a subsequent face in the direction opposite to the adapting face, a phenomenon known as a face identity aftereffect. In the present study, we examined the temporal dynamics of such aftereffects in children at an age when face processing abilities are not yet adult-like. We hypothesized that children's difficulties in face processing may stem f...