Franck Yonga

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A holistic design and verification environment to investigate driving assistance systems is presented, with an emphasis on system-on-chip architectures for video applications. Starting with an executable specification of a driving assistance application, subsequent transformations are performed across different levels of abstraction until the final(More)
Tracking several objects across multiple cameras is essential for collaborative monitoring in distributed camera networks. The tractability of the related optimization aiming at tracking a maximal number of important targets, decreases with the growing number of objects moving across cameras. To tackle this issue, a viable model and sound object(More)
In this work, a clustering approach for bandwidth reduction in distributed smart camera networks is presented. Properties of the environment such as camera positions and environment pathways, as well as dynamics and features of targets are used to limit the flood of messages in the network. To better understand the correlation between camera positioning and(More)
In this paper we present an approach aimed at optimizing communications in a distributed smart camera network. The goal is to further reduce the amount of video data to be compressed and transported across the network, thus reducing processing time on smart camera nodes and increasing the network bandwidth. We seek to transmit only data of major importance(More)
IP-based design is used to tackle complexity and reduce time-to-market in systems-on-chip with high-performance requirements. Component integration, the main part in this process, is a complicated and time-consuming task, largely due to interfacing issues. Standard interfaces can help to reduce the integration efforts. However, existing implementations use(More)
A synthesis approach based on Answer Set Programming (ASP) for heterogeneous system-on-chips to be used in distributed camera networks is presented. In such networks, the tight resource limitations represent a major challenge for application development. Starting with a high-level description of applications, the physical constraints of the target devices,(More)
Design verification takes 80 % of times in the flow design of hardware/software applications. To reduce this duration, subsequent transformations are performed across different levels of abstraction until the final implementation. We propose a rapid prototyping camera system based on FPGAs, which allows designs to be explored and evaluated in realistic(More)
We present a framework for fast prototyping of embedded video applications. Starting with a high-level executable specification written in OpenCV, we apply semi-automatic refinements of the specification at various levels (TLM and RTL), the lowest of which is a system-on-chip prototype in FPGA. The refinement leverages the structure of image processing(More)