Buscar
Mostrando ítems 1-10 de 13
Ponencia
Ponencia
Real-time single-exposure ROI-driven HDR adaptation based on focal-plane reconfiguration
(Society of Photo-Optical Instrumentation Engineers, 2015)
This paper describes a prototype smart imager capable of adjusting the photo-integration time of multiple regions of interest concurrently, automatically and asynchronously with a single exposure period. The operation is ...
Ponencia
Design of a power-efficient widely-programmable Gm-LC band-pass sigma-delta modulator for SDR
(Institute of Electrical and Electronics Engineers, 2016)
This paper presents the design and implementation of a fourth-order band-pass continuous-time modulator intended for the digitization of radio-frequency signals in softwaredefined- radio applications. The modulator ...
Artículo
Characterization-Based Modeling of Retriggering and Afterpulsing for Passively Quenched CMOS SPADs
(Institute of Electrical and Electronics Engineers, 2019)
The current trend in the design of systems based on CMOS SPADs is to adopt smaller technological nodes, allowing the co-integration of additional electronics for the implementation of complex digital systems on chip. Due ...
Ponencia
A QVGA Vision Sensor with Multi-functional Pixels for Focal-Plane Programmable Obfuscation
(Institute of Electrical and Electronics Engineers, 2014)
Privacy awareness constitutes a critical aspect for smart camera networks. An ideal awless protection of sensitive information would boost their application scenarios. How- ever, it is still far from being achieved. Numerous ...
Ponencia
CMOS SPADs selection, modeling and characterization towards image sensors implementation
(Institute of Electrical and Electronics Engineers, 2012)
The selection, modeling and characterization of Single Photon Avalanche Diodes (SPADs) are presented. Working with the standard 180nm UMC CMOS process, different SPAD structures are proposed in combination with several ...
Artículo
Smart imaging for power-efficient extraction of Viola-Jones local descriptors
(Society of Photo-Optical Instrumentation Engineers, 2014)
In computer vision, local descriptors permit to summarize relevant visual cues through feature vectors. These vectors constitute inputs for trained classifiers which in turn enable different high-level vision tasks. While ...
Artículo
Bottom-up performance analysis of focal-plane mixed-signal hardware for Viola–Jones early vision tasks
(John Wiley & Sons, 2015)
Focal-plane mixed-signal arrays have traditionally been designed according to the general claim that moderate accuracy in processing is affordable. The performance of their circuitry has been analyzed in these terms without ...
Ponencia
Demo: A Prototype Vision Sensor for Real-time Focal-plane Obfuscation through Tunable Pixelation
(Institute of Electrical and Electronics Engineers, 2014)
Privacy concerns are hindering the introduction of smart camera networks in prospective application scenarios like retail analytics, factory monitoring or elderly care. The idea of networked cameras pervasively collecting ...
Ponencia
5×5 SPAD matrices for the study of the trade-offs between fill factor, dark count rate and crosstalk in the design of CMOS image sensors
(Institute of Electrical and Electronics Engineers, 2014)
CMOS Single Photon Avalanche Diodes (SPADs) are a dedicated type of photodetectors that are attracting increasing interest. Crosstalk and fill factor are magnitudes that become important when dealing with arrays of SPADs. ...