Search results for "Real-time operating system"

showing 4 items of 4 documents

<title>Real-time face tracking and recognition for video conferencing</title>

2001

This paper describes a system of vision in real time, allowing to detect automatically the faces presence, to localize and to follow them in video sequences. We verify also the faces identities. These processes are based by combining technique of image processing and methods of neural networks. The tracking is realized with a strategy of prediction-verification using the dynamic information of the detection. The system has been evaluated quantitatively on 8 video sequences. The robustness of the method has been tested on various lightings images. We present also the analysis of complexity of this algorithm in order to realize an implementation in real time on a FPGA based architecture.

Artificial neural networkComputer scienceFacial motion capturebusiness.industryImage processingcomputer.software_genreFacial recognition systemVideoconferencingRobustness (computer science)Computer graphics (images)Video trackingComputer visionArtificial intelligencebusinessReal-time operating systemcomputerAdvanced Signal Processing Algorithms, Architectures, and Implementations XI
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Real Time Image Rotation Using Dynamic Reconfiguration

2002

Abstract Field programmable gate array (FPGA) components are widely used nowdays to implement various algorithms, such as digital filtering, in real time. The emergence of dynamically reconfigurable FPGAs made it possible to reduce the number of necessary resources to carry out an image-processing task (tasks chain). In this article, an image-processing application, image rotation, that exploits the FPGAs dynamic reconfiguration method is presented. This paper shows that the choice of an implementation, static or dynamic reconfiguration, depends on the nature of the application. A comparison is carried out between the dynamic and the static reconfiguration using two criteria: cost and perfo…

Computer scienceBlock diagramControl reconfigurationImage processingTask (computing)Computer engineeringSignal ProcessingComputer Vision and Pattern RecognitionElectrical and Electronic EngineeringField-programmable gate arrayDynamic methodReal-time operating systemImage restorationSimulationReal-Time Imaging
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Dynamic scheduling of periodic skippable tasks in an overloaded real-time system

2008

International audience; The need for supporting dynamic real-time environments where changes in workloads may occur requires a scheduling framework that explicitly addresses overload conditions, allows the system to achieve graceful degradation and supports a mechanism capable of determining the load to be shed from the system to handle the overload. In applications ranging from video reception to air-craft control, tasks enter periodically and have response time constraints, but missing a deadline is acceptable, provided most deadlines are met. Such tasks are said to be occasionally skippable and have an assigned skip parameter. We look at the problem of uniprocessor scheduling of skippabl…

Earliest deadline first schedulingComputer scienceDistributed computingReal-time computingResponse timeFault toleranceWorkload02 engineering and technologyDynamic priority scheduling020202 computer hardware & architectureScheduling (computing)Robustness (computer science)0202 electrical engineering electronic engineering information engineering[INFO.INFO-ES]Computer Science [cs]/Embedded Systems020201 artificial intelligence & image processingReal-time operating system2008 IEEE/ACS International Conference on Computer Systems and Applications
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Hyplets - Multi Exception Level Kernel towards Linux RTOS

2018

This paper presents the concept of a Multi-Exception level operating system. We add a hypervisor awareness to the Linux kernel and execute code in hyp exception level. We do that through the use of Hyplets. Hyplets are an innovative way to code interrupt service routines under ARM. Hyplets provide high performance, security, running time predictability, an RPC mechanism and a possible solution for the priority inversion problem. Hyplets uses special features of ARM8va hypervisor memory architecture.

Priority inversionSoftware_OPERATINGSYSTEMSComputer scienceKernel (statistics)Memory architectureCode (cryptography)Operating systemHypervisorLinux kernelInterruptcomputer.software_genreReal-time operating systemcomputerProceedings of the 11th ACM International Systems and Storage Conference
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