RT journal article
T1 A Wide Linear Dynamic Range Image Sensor Based on Asynchronous Self-Reset and Tagging of Saturation Events
A1 Leñero Bardallo, Juan Antonio
A1 Carmona Galán, R.
A1 Rodríguez Vázquez, A.
A2 Ingeniería en AutomáticaElectrónica, Arquitectura y Redes de Computadores
K1 Image sensor
K1 HDR
K1 Event
K1 AER
K1 High Dynamic Range
K1 Linear response
K1 Event
K1 Octopus retina
AB We report a high dynamic range (HDR) image sensor with a linear response that overcomes some of the limitations of sensors with pixels with self-reset operation. It operates similar to an active pixel sensor, but its pixels have a novel asynchronous event-based overflow detection mechanism. Whenever the pixel voltages at the integration capacitance reach a programmable threshold, the pixels self-reset and send out asynchronously an event indicating this. At the end of the integration period, the voltage at the integration capacitance is digitized and readout. Combining this information with the number of events fired by each pixel, it is possible to render linear HDR images. Event operation is transparent to the final user. There is no limitation for the number of self-resets of each pixel. The output data format is compatible with frame-based devices. The sensor was fabricated in the AMS 0.18- μm HV technology. A detailed system description and experimental results are provided in this paper. The sensor can render images with an intra-scene dynamic range of up to 130 dB with linear outputs. The pixels' pitch is 25 μm and the sensor power consumption is 58.6 mW.
PB Institute of Electrical and Electronics Engineers Inc.
SN 0018-9200
YR 2017
FD 2017
LK http://hdl.handle.net/10498/33920
UL http://hdl.handle.net/10498/33920
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026