Effects of GIMP Retinex Filtering Evaluated by the Image Entropy

A GIMP Retinex filtering can be used for enhancing images, with good results on foggy images, as recently discussed. Since this filter has some parameters that can be adjusted to optimize the output image, several approaches can be decided according to desired results. Here, as a criterion for optimizing the filtering parameters, we consider the maximization of the image entropy. We use, besides the Shannon entropy, also a generalized entropy.

Analysis of a Play by Means of CHAPLIN, the Characters and Places Interaction Network Software

Recently, we have developed a software able of gathering information on social networks from written texts. This software, the CHAracters and PLaces Interaction Network (CHAPLIN) tool, is implemented in Visual Basic. By means of it, characters and places of a literary work can be extracted from a list of raw words. The software interface helps users to select their names out of this list. Setting some parameters, CHAPLIN creates a network where nodes represent characters/places and edges give their interactions. Nodes and edges are labelled by performances. In this paper, we propose to use CHAPLIN for the analysis a William Shakespeare's play, the famous 'Tragedy of Hamlet, Prince of Denmark'. Performances of characters in the play as a whole and in each act of it are given by graphs.

Mapping Images with the Coherence Length Diagrams

Statistical pattern recognition methods based on the Coherence Length Diagram (CLD) have been proposed for medical image analyses, such as quantitative characterisation of human skin textures, and for polarized light microscopy of liquid crystal textures. Further investigations are made on image maps originated from such diagram and some examples related to irregularity of microstructures are shown.

An image processing analysis of skin textures

Colour and coarseness of skin are visually different. When image processing is involved in the skin analysis, it is important to quantitatively evaluate such differences using texture features. In this paper, we discuss a texture analysis and measurements based on a statistical approach to the pattern recognition. Grain size and anisotropy are evaluated with proper diagrams. The possibility to determine the presence of pattern defects is also discussed.