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Architectures Reconfigurables Dynamiquement dédiées aux traitements en temps réel des signaux vidéo

Abstract : Since a few years ago, most of vision systems with reconfigurable circuits FPGA have become an intermediate solution between systems using processor circuits and systems using a ASIC's circuits. The reconfigurability of FPGA-SRAM has become a trump for the development of several applications with the same hardware. For this work, we have interested for reconfiguring dynamically (DR) this circuits. This configuration mode has been translated by a fast change of there internaI structure during the execution of operations. Novel rules of conception were defined, especially for decomposing the algorithms that we want to implement like a separate module. These modules have the particularity to be executed independently. The domain of low level real time image processing can be decomposed easily like a set of cascaded operators. However, the use of the DR in this domain, impose us to respect the constraint of video real time and to take account of FPGA circuit's reconfiguration time. This constraint must not delay the treatment' s rate. In this fact, we developed two architectures with dynamically reconfiguratiort that the technical proposition was presented in details. They are based on the desynchronisation of the video flow and the treatment flow. Moreover we suggest a criterion in order to evaluate and to compare in one hand the two architectures between them, and in other hand the DR architecture with a classical system that do not use this mode of reconfiguration. In order to validate the concept, we have selected a set of low level images processing operators with a view to implement on the dynamically reconfiguration module (MOD ARD) which are developed in the laboratory (LIEN).
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  • HAL Id : tel-01747372, version 1



Hassane Guermoud. Architectures Reconfigurables Dynamiquement dédiées aux traitements en temps réel des signaux vidéo. Autre [cond-mat.other]. Université Henri Poincaré - Nancy 1, 1997. Français. ⟨NNT : 1997NAN10264⟩. ⟨tel-01747372⟩



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