Despite the significant success of using local feature descriptor with many applications such as, face detection, human facial expression recognition, gender classification, signature verification, etc. Based on our knowledge, there is no research present on the usage of the descriptor to solve the stereo corresponding problem. Despite this, descriptor uses the same methodology for comparing th...

The mechanisms underlying visual motion detection can be studied simultaneously in different cell compartments in vivo by using calcium as a reporter of the spatiotemporal activity distribution in single motion-sensitive cells of the fly. As predicted by the Reichardt model, local dendritic calcium signals are found to indicate the direction and velocity of pattern motion but are corrupted by s...

Automatic facial expression recognition is a challenging problem in computer vision, and has gained significant importance in the applications of human-computer interactions. The vital component of any successful expression recognition system is an effective facial representation from face images. In this paper, we have derived an appearance-based feature descriptor, the Local Directional Patte...

With the development of information technology, face recognition technology has been continuously developed. This technology has attracted the attention of many researchers, including institutions and production enterprises. Face recognition technology has become a relatively independent application technology area in various social services. This paper presents a face recognition algorithm bas...

Several important pattern recognition applications are based on feature extraction and vector clustering. Directional patterns may be represented by rotation-variant directional vectors, formed from M features uniformly extracted in M directions. It is often required that pattern recognition algorithms are invariant under pattern rotation or, equivalently, invariant under circular shifts of suc...

Head and Shoulder pattern is a well-known technical trading strategy. However, what exactly constitutes a Head and Shoulder pattern under time series is sometimes ambiguous. In this thesis, we show how this pattern can be rigorously defined by using Directional Change. Directional Change is a new way to summarise price changes in the market. It records a transaction price only when the market h...

Local binary pattern (LBP) is a simple gray scale descriptor to characterize the local distribution of the grey levels in an image. Multi-resolution LBP and/or combinations of the LBPs have shown to be effective in texture image analysis. However, it is unclear what resolutions or combinations to choose for texture analysis. Examining all the possible cases is impractical and intractable due to...