In this research, we propose an innovative touch-less palm print recognition system. This project is motivated by the public’s demand for non-invasive and hygienic biometric technology. For various reasons, users are concerned about touching the biometric scanners. Therefore, we propose to use a low-resolution web camera to capture the user’s hand at a distance for recognition. The users do not...

The human ear is unique and stability and it has broad application prospects in the field of identity verification. Ear image matching is an important part of the ear recognition, has gained widely research. SIFT(Scale invariant feature transform) descriptor is one of the most effective local features that is used for scale, rotation and illumination invariant. In this paper a fast bi-direction...

Unsupervised image segmentation techniques based on the image textures are studied and developed in this thesis. First, the wavelet filters are considered as the mean for feature extraction and feature vector creation. The creation of the filters is studied as well as the filtered images segmented spectrum. Next, the analysis with directional filters for feature extraction is used. Emphasis is ...

Chemical gradients are used by cells to provide positional information. Two new studies reveal that polarity proteins are highly dynamic in yeast cells responding to a pheromone gradient and suggest that this behavior is important for robust directional growth.

automatic facial recognition has many potential applications in different areas of humancomputer interaction. however, they are not yet fully realized due to the lack of an effectivefacial feature descriptor. in this paper, we present a new appearance based feature descriptor,the local directional pattern (ldp), to represent facial geometry and analyze its performance inrecognition. an ldp feat...

In this paper, the impact of demosaicing on gradient extraction is studied and a gradient-based feature pipeline based raw Bayer pattern images proposed. It shown both theoretically experimentally that are applicable to central difference algorithms with negligible performance degradation, as long arrangement color filter array (CFA) patterns matches operators. The constancy assumption, which w...