This text gives a short overview of the features of the visualization software CLUCalc, and how this software may be used to teach various aspects of Geometric Algebra. CLUCalc is a stand-alone software tool that uses the 3d-graphics library OpenGL to visualize the geometric meaning of elements of Geometric Algebras. These visualizations can very easily be animated or made user-interactive. Apa...

detecting faces in cluttered backgrounds and real world has remained as an unsolved problem yet. in this paper, by using composition of some kind of independent features and one of the most common appearance based approaches, and multilayered perceptron (mlp) neural networks, not only some questions have been answered, but also the designed system achieved better performance rather than the pre...

This paper systematically studies maize seeds varieties identification technology and algorithms using advanced machine vision technology. A multi-object contour extraction algorithm adapting to maize seeds varieties identification was proposed. Geometric features and color features parameters of maize seeds were defined and analyzed, and a multi-object geometric features and color features ext...

A patient with left hemispatial neglect, while completely unaware of features on the left side of figures, nevertheless perceived geometric illusions dependent on these features. Bisection errors were amplified not only by increasing line length, but also by perceived line length induced by these illusions. Bisection of Judd illusion figures was as much influenced by neglected features on the l...

We present a data-driven method for automatically recoloring a photo to enhance its appearance or change a viewer’s emotional response to it. A compact representation called a RegionNet summarizes color and geometric features of image regions, and geometric relationships between them. Correlations between color property distributions and geometric features of regions are learned from a database...

In this paper we present the lip-reading experiments with different sets of the features extracted from the video sequence. In our experiments we use a simple color based filtering techniques to extract the feature vectors from the incoming video signal. Some of those features are directly related to the geometrical properties of the lips (their position and visible thickness). Other features r...

In this paper we investigate the acquisition of 3D functional object maps for outdoor urban scenes from point cloud data, using techniques which worked reliably for indoor household environments in our previous work[1]. By employing 3D geometry reasoning methods, our approach can successfully segment the important parts of the environment and give semantic annotations to the underlying data poi...

In this paper, we proposed a new fingerprint matching algorithm based on local geometric feature of fingerprint minutia and texture feature for each minutia. To describe the geometric feature of fingerprint minutia, we build a bi-minutia based bar model and get the geometric relationship between the bar and ridges of two candidate minutia; to demonstrate the texture feature, we creatively adopt...

The directional properties of bat ears as receivers is a current area of interest in ultrasound research. This paper presents a new approach to analyse the relationship between morphological features and acoustical properties of the external ear of bat species. The beam pattern of Rousettus leschenaultii's right ear is measured and compared to that of receiver structures whose design is inspire...