Besma Roui Abidi

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Automatic tracking is essential for a 24 hours intruder-detection and, more generally, a surveillance system. This paper presents an adaptive background generation and the corresponding moving region detection techniques for a Pan-TiltZoom (PTZ) camera using a geometric transform-based mosaicing method. A complete system including adaptive background(More)
Color constancy is one of the important research areas with a wide range of applications in the fields of color image processing and computer vision. One such application is video tracking. Color is used as one of the salient features and its robustness to illumination variation is essential to the adaptability of video tracking algorithms. Color constancy(More)
This paper summarizes the various components of face recognition research conducted at the IRIS Lab. First, fusion of visual and thermal infrared (IR) images for robust face recognition is discussed. Two techniques are implemented: data fusion and decision fusion. With the knowledge that eyeglasses block the emission of thermal energy, an algorithm is(More)
The commercial face recognition software FaceIt® Identification and Surveillance was evaluated using the Facial Recognition Technology (FERET) database. The experimental results show the performance of FaceIt® with variations in illumination, expression, age, head size, pose, and the size of the database which all remain difficult problems in face(More)
I am submitting herewith a thesis written by Vivek Agarwal entitled " Ridge Regression Approach to Color Constancy ". I have examined the final electronic copy of this thesis for form and content and recommend that it be accepted in partial fulfillment of the requirements for the degree of Master of Science, with a major in Electrical Engineering. (Original(More)
This paper describes a series of linear and nonlinear pseudocoloring maps designed and applied to single energy X-ray luggage scans to assist airport screeners in identifying and detecting threat items, particularly hard to see low-density weapons in luggage. Considerations of the psychological and physiological processing involved in the human perception(More)
In this paper, we describe a face video database obtained from Long Distances and with High Magnifications, IRISLDHM. Both indoor and outdoor sequences are collected under uncontrolled surveillance conditions. The significance of this database lies in the fact that it is the first database to provide face images from long distances (indoor: 10m~20m and(More)
Most existing face recognition algorithms require face images with a minimum resolution. Meanwhile, the rapidly emerging need for near-ground long range surveillance calls for a migration in face recognition from close-up distances to long distances and accordingly from low and constant resolution to high and adjustable resolution. With limited optical zoom(More)
We present an integrated surveillance system for detecting and tracking security breaches in airports. The first part of the system uses an overhead camera to detect security breaches in exit lanes using a motion-based segmentation algorithm, and the second part of the system tracks the detected target with a pan/tilt/zoom (PTZ) camera using color and shape(More)