Rajaa Touahni

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Fractal analysis has been shown to be useful in image processing for characterizing shape and gray-scale complexity. The fractal feature is a compact descriptor used to give a numerical measure of the degree of irregularity of the medical images. This descriptor property does not give ownership of the local image structure. In this paper, we present a(More)
3D scene based objects detection and tracking is a central problem in many intelligent transportation applications. Dynamic stereo vision is the known approach to solve this problem. It consists in detecting and tracking objects from their reconstructed features using stereo images. This paper proposes a new method for detecting and tracking objects using(More)
Medical image segmentation is a technique using to mean manually, fully or semi-automatically delineating the boundaries of tissue regions or an object. This paper presents a robust segmentation approach for medical image texture using multifractal analysis. The goal is to segment the images with respect to their characteristics such as bone and tissue(More)
In this paper, we present a novel strategy for roof segmentation from aerial images (orthophotoplans) based on the cooperation of edge- and region-based segmentation methods. The proposed strategy is composed of three major steps. The first one, called the pre-processing step, consists of simplifying the acquired image with an appropriate couple of(More)
This paper aims to build an analytical tools system for Learning Management Systems (LMS) that will aid and support teachers and administrators to understand and analyse interaction patterns and knowledge constructions of the participants involved in ongoing online interactions. Most LMS commercial or open source software does not include any tools for(More)
Software testing is an important step in the life cycle of agile development, it represents an efficient way to ensure the good functioning of the product. In previous work, we implemented an algorithm that takes as input user stories, and automatically generate UML sequence diagrams. In this work, these UML sequence diagrams are automatically transformed(More)
With the widespread use of Internet, transfer of digital data online is enormous. This leads to easy accessibility and vulnerability to attacks of copyrighted content on large scale. Digital data in form of videos, audios, text, images can easily be manipulated, forged and redistributed for profits. To overcome this problem and protect copyrighted content,(More)