RT Journal Article
T1 Global shutter CMOS vision sensors and event cameras for on‐chip dynamic information
A1 Jaklin, Marko
A1 García Lesta, Daniel
A1 López Martínez, Paula
A1 Brea Sánchez, Víctor Manuel
K1 CMOS vision sensors
K1 Dynamic vision sensors
K1 Event cameras
K1 Frame difference
K1 High dynamic range
K1 Smart image sensors
AB The on-chip extraction of dynamic information from a scene can be addressed with either frame-based CMOS vision, also called smart image sensors, or dynamic vision sensors, also known as event cameras. When implemented with a pinned photodiode (PPD) as a 4-transistor active pixel sensor (4T-APS), the former brings about the benefits of low temporal noise and dark current but without high dynamic range (HDR). The latter comes with the benefits of HDR and a fast event detection rate with low power consumption. The drawback is the background activity noise, which leads to additional hardware or algorithms to keep it low. This paperanalyses the mismatch and noise of a global shutter 4T-APS implementation with local HDR through an overflow capacitor and correlated double sampling (CDS) to provide low noise events through frame differencing. The aim is to narrow the gap with dynamic vision sensors in terms of event rate and dynamic range. We show that our solution would be competitive with event cameras in scenarios with slow moving objects and a relatively wide dynamic range (85 dB).
PB Wiley
SN 0098-9886
YR 2024
FD 2024
LK http://hdl.handle.net/10347/33258
UL http://hdl.handle.net/10347/33258
LA eng
NO Marko Jaklin, Daniel García-Lesta, Paula López, Victor M. Brea (2024). International Journal of Circuit Theory and Applications
NO This work has received funding from the projects: European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 860370; and the European Union (European Regional Development Fund): from the Xunta de Galicia-Consellería de Cultura, Educación e Ordenación Universitaria Accreditation 2019–2022 ED431G-2019/04 and Reference Competitive Group Accreditation 2021–2024, GRC2021/48. This work was also funded by Spanish Ministry of Science, Innovation and Universities under grant PID2021-128009OB-C32.
DS Minerva
RD 24 abr 2026