In this work, the authors present current research in the study of the practices, perspectives and challenges of pattern recognition. The topics include the practical usage of algorithmic probability in pattern recognition; application of pattern recognition in optimisation-simulation techniques; pattern recognition applied to spectroscopy; optimisation of an embedded simplified fuzzy ARTMAP implemented on a microcontroller using MATLAB GUI environment; pattern recognition using quaternion colour moments; and pattern recognition by Bessel mask and one-dimensional signatures.