The aims of this paper are two-fold: to define Gaussian mixture models (GMMs) of colored texture on several feature spaces and to compare the performance of these models in various classification tasks, both with each other and with other models popular in the literature. We construct GMMs over a variety of different color and texture feature spaces, with a view to the retrieval of textured col...

Constant background hypothesis for background subtraction algorithms is often not applicable in real environments because of shadows, reflections, or small moving objects in the background: flickering screens in indoor scenes, or waving vegetation in outdoor ones. In both indoor and outdoor scenes, the use of color cues for background segmentation is limited by illumination variations when ligh...

The needs for high‐performances display is increased while electronics have been integrated into various materials. Compared to conventional display, micro‐type displays are required with miniaturized and high‐ intensity performances applications, such as AR/VR, smart contact lens. Common light source‐based approach a simple way demonstrate the micro‐display high‐transmittance, resolution color...

Sociolinguistic research has increasingly turned to examining the use of both the grammar and speech events of black speech by non-Blacks. This phenomenon called language crossing is defined as “the use of language varieties associated with social or ethnic groups that the speaker does not normally ‘belong’ to” (Rampton 1995:14). Although the literature has focused on phonological features, the...

In this paper, we present a system for image replica detection. More specifically, the technique is based on the extraction of 162 features corresponding to texture, color and gray-level characteristics. These features are then weighted and statistically normalized. To improve training and performances, the features space dimensionality is reduced. Lastly, a decision function is generated to cl...

We propose a novel method for image demosaicking from samples obtained with a completely arbitrary color filter array (CFA). We adopt a variational approach where the reconstructed image has maximal smoothness under the constraint of consistency with the available measurements. This optimization problem boils down to a large, sparse system of linear equations to solve, for which we propose an i...

The paper presents a novel Motor Map neural network for re-indexing color mapped images. The overall learning process is able to smooth the local spatial redundancy of the indexes of the input image. Differently than before, the proposed optimization process is specifically devoted to re-organize the matrix of differences of the indexes computed according to some predefined patterns. Experiment...

The paper presents the concurrency control method implemented for a Multimedia Database Management System. The system provides simultaneous access to information for multiple clients via TCP/IP network. The problems that should be handled refers to process multiple requests and access the same set of data in a concurrent environment. It is also measured the system’s performances in different us...

More and more research have been developed very recently for automatic hand recognition. This paper proposes a new method for contactless hand authentication in complex images. Our system uses skin color and hand shape information for hand detection process. Next, the palm is extracted and characterized by circular Gabor filter. Finally, the palm features are matched by a new normalized approxi...