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In this paper we propose a novel texture feature extraction method for posed and spontaneous image based facial expression recognition. The kernel Sobel filter is used with eight masks to derive the gradient components for each pixel in the image. Two types of gradient images are extracted for different directions denoted as xy and lr. The robust Elongated Quinary Pattern (EQP) descriptor is then...
In this paper a new feature extraction method called Multi-scale Sobel Angles Local Binary Pattern (MSALBP) is proposed for application in personal verification using biometric Finger Texture (FT) patterns. This method combines Sobel direction angles with the Multi-Scale Local Binary Pattern (MSLBP). The resulting characteristics are formed into non-overlapping blocks and statistical calculations...
The aim of this paper is to present a new method to produce a Receiver Operating Characteristic (ROC) curve from a Probabilistic Neural Network (PNN). Traditionally, an ROC curve has been used widely to report the recognition system measurements. Two main problems arise when using the PNN. Firstly, the PNN outputs are always logical (zeros and one); secondly, a PNN is considered as a multi-class classifier,...
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