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Mostrando ítems 21-30 de 81
Ponencia
Switched-capacitor networks for scale-space generation
(Institute of Electrical and Electronics Engineers, 2011)
In scale-space filtering signals are represented at several scales, each conveying different details of the original signal. Every new scale is the result of a smoothing operator on a former scale. In image processing, ...
Ponencia
In-pixel generation of gaussian pyramid images by block reusing in 3D-CMOS
(Institute of Electrical and Electronics Engineers, 2012)
This paper introduces an architecture of a switched-capacitor network for Gaussian pyramid generation. Gaussian pyramids are used in modern scale- and rotation-invariant feature detectors or in visual attention. Our ...
Ponencia
Power-efficient focal-plane image representation for extraction of enriched Viola-Jones features
(Institute of Electrical and Electronics Engineers, 2012)
This paper describes the use of a reconfigurable focal-plane processing array in order to achieve an image representation which dramatically reduces the computational load of the Viola-Jones object detection framework. ...
Artículo
Real-Time Inter-Frame Histogram Builder for SPAD Image Sensors
(Institute of Electrical and Electronics Engineers, 2018)
CMOS image sensors based on single-photon avalanche-diodes (SPAD) are suitable for 2D and 3D vision. Limited by uncorrelated noise and/or low illumination conditions, image capturing becomes nearly impossible in a single-shot ...
Capítulo de Libro
Towards an ultra‐low‐power low‐cost wireless visual sensor node for fine‐grain detection of forest fires
(Universidade de Coimbra, 2014)
Advances in electronics, sensor technologies, embedded hardware and software are boosting the application scenarios of wireless sensor networks. Specifically, the incorporation of visual capabilities into the nodes means ...
Ponencia
An Experimentally-Validated Verilog-A SPAD Model Extracted from TCAD Simulation
(Institute of Electrical and Electronics Engineers, 2018)
Single-photon avalanche diodes (SPAD) are photodetectors with exceptional characteristics. This paper proposes a new approach to model them in Verilog-A HDL with the help of a powerful tool: TCAD simulation. Besides, to ...
Ponencia
Form Factor Improvement of Smart-Pixels for Vision Sensors through 3-D Vertically- Integrated Technologies
(Institute of Electrical and Electronics Engineers, 2014)
While conventional CMOS active pixel sensors embed only the circuitry required for photo-detection, pixel addressing and voltage buffering, smart pixels incorporate also circuitry for data processing, data storage and ...
Ponencia
Experimental Evidence of Power Efficiency due to Architecture in Cellular Processor Array Chips
(Institute of Electrical and Electronics Engineers, 2016)
Speeding up algorithm execution can be achieved by increasing the number of processing cores working in parallel. Of course, this speedup is limited by the degree to which the algorithm can be parallelized. Equivalently, ...
Artículo
IC-PCR 1000 control using a wireless sensor network (WSN)
(International Association of Computer Science and Information Technology, 2012)
We put forward in this paper a new methodbased on a Wireless Sensor Network from Crossbowtechnology for the IC-PCR1000 control and communication tolessen the impact of the unwanted EMI. This method is a newmethod that ...
Artículo
Image Sensing Scheme Enabling Fully-Programmable Light Adaptation and Tone Mapping with a Single Exposure
(Institute of Electrical and Electronics Engineers, 2016)
This letter presents new insights into a high dynamic range (HDR) technique recently reported. We demonstrate that two intertwined photodiodes per pixel can perform tone mapping under unconstrained illumination conditions ...