Component-based development of embeddedsystems has been suggested as a means to increase development efficiency by, for example, facilitating reuse. However, the specifics of the embeddedsystems domain also raise so...
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the current trend in the silicon industry has been a steady migration towards Chip Multicore Processor (CMP) system to harvest more throughputs. However, chip multicore processors report higher values of soft errors, ...
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Many camera sensors suffer from limited dynamic range. the result is that there is a lack of clear details in displayed images and videos. this paper describes our approach to generate high dynamic range (HDR) from an...
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ISBN:
(纸本)9781457717079
Many camera sensors suffer from limited dynamic range. the result is that there is a lack of clear details in displayed images and videos. this paper describes our approach to generate high dynamic range (HDR) from an image sequence while modifying exposure times for each new frame. For this purpose, we propose an FPGA-based architecture that can produce a real-time high dynamic range video from successive image acquisition. Our hardware platform is build around a standard low dynamic range CMOS sensor and a Virtex 5 FPGA board. the CMOS sensor is a EV76C560 provided by e2v. this 1.3 Megapixel device offers novel pixel integration/readout modes and embedded image pre-processing capabilities including multiframe acquisition with various exposure times. approach consists of a pipeline of different algorithmic phases: automatic exposure control during image capture, alignment of successive images in order to minimize camera and objects movements, building of an HDR image by combining the multiple frames, and final tonemapping for viewing on a LCD display. Our aim is to achieve a realtime video rate of 25 frames per second for a full sensor resolution of 1, 280 x 1, 024 pixels.
In this paper, massively parallel time-domain electrical full-wave solvers, which can be used in circuit and electromagnetic-field simulators, are described. First, FDTD (Finite-Difference time-Domain) method and its ...
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Tracking individuals is a prominent application in such domains like surveillance or smart environments. this paper provides a development of a multiple camera setup with disjointed view that tracks moving persons in ...
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ISBN:
(纸本)9781457717079
Tracking individuals is a prominent application in such domains like surveillance or smart environments. this paper provides a development of a multiple camera setup with disjointed view that tracks moving persons in a site. It focuses on a probabilistic modeling which utilizes the discriminative observed features such as person's appearance, and her/his possible pathways for the estimation of the unobserved identity. Each camera evaluates the difference between its locally extracted generative model withthe corresponding received models from its neighbors to find the correspondence between prior and recent identified persons. the linear interpolation is applied to combine the observed features. In conjunction withthis efficient probabilistic framework, a novel system on chip design for an FPGA-based smart camera is developed. It provides a hardware/software co-design architecture to achieve the real-time performance inside the smart camera. the functionality of the proposed system is evaluated through a realistic case study.
In this paper, the modules for the conceptual design of an innovative e-learning platform using satellite communications for teaching control systemstheory courses are presented. All necessary tools and mechanisms ar...
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Monitoring and tracking of elderly people using vision algorithms is an strategy gaining relevance to detect anomalous and potentially dangerous situations and react immediately. In general vision algorithms for monit...
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ISBN:
(纸本)9783642196430
Monitoring and tracking of elderly people using vision algorithms is an strategy gaining relevance to detect anomalous and potentially dangerous situations and react immediately. In general vision algorithms for monitoring and tracking are very costly and take a lot of time to respond, which is highly inconvenient since many applications can require action to be taken in realtime. A multi-agent system (MAS) can establish a social model to automate the tasks carried out by the human experts during the process of analyzing images obtained by cameras. this study presents a detector agent integrated in a MAS that can process stereoscopic images to detect and classify situations and states of elderly people in geriatric residences by combining a series of novel techniques. We will talk in details about the combination of techniques used to perform the detection process, subdivided into human detection, human tracking,and human behavior understanding, and where there is a case-based reasoning (CBR) model that allows the system to add reasoning capabilities.
Geographic Information systems are developed to handle enormous volumes of data and are equipped with numerous functionalities intended to capture, store, edit, organise, process and analyse or represent the geographi...
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