Pascal Fleury

Learn More
Digital images have become an important source of information in the modern world of communication systems. In their raw form, digital images require a tremendous amount of memory. Many research efforts have been devoted to the problem of image compression in the last two decades. Two different compression categories must be distinguished: lossless and(More)
Perceptual components such as audiovisual processing and multimodal fusion components are integral elements of smart space applications. These components provide information about human actors' identity, location, activities, and sometimes goals through person trackers, person-identification components, and other situation-identification elements.(More)
In this paper the problem of object coding is addressed. In order to satisfy the needs of new applications in a multi-resolution environment the problem of object{oriented coding has to be addressed. In this paper a new approach of object coding is proposed. It is based on an arbitrarily{shaped subband transform followed by a generalized embedded zerotree(More)
Recent developments in image coding tend to promote schemes consisting of a great variety of coding algorithms applied to diierent parts of the image to code. This results in an improved rate-distortion behavior of the global system. The selection of the optimal coding method for a given region of an image is still a computationally intensive task, as most(More)
MPEG-4 aims at providing standardized core technologies allowing efficient storage, transmission and manipulation of video data in multimedia environments. In order to achieve this broad goal, rather than a solution for a narrow set of applications, functionalities common to clusters of applications are under consideration. The encoded representation, along(More)