Showing 1-25 of 4,218 resultsfor "Index Terms":Dynamic Vision Sensor
"Index Terms":Dynamic Vision Sensor
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An event-driven system for high-speed vision
2010 The 7th International Conference on Informatics and Systems (INFOS)
Year: 2010 | Conference Paper |
This paper presents an event-driven vision system, including a dual-line dynamic vision sensor and a general purpose address-event processor tailored for real-time and highspeed applications. The asynchronous and self-spiking pixels of the dynamic vision sensor are times tamped with high-precision and routed to the processor for flexible and data rate-dependent information processing. The general-...Show More
Dynamic vision sensor (DVS) as a bio-inspired camera, has shown great advantages in high dynamic range (HDR) and high temporal resolution (us) in vision tasks. However, how to lossy compress asynchronous spikes for meeting the demand of large-scale transmission and storage meanwhile maintaining the analysis performance still remains open. Towards this end, this paper proposes a lossy spike coding ...Show More
In this paper, we propose a monocular multiframe high dynamic range (HDR) monocular vision system to improve the imaging quality of traditional CMOS/charge-coupled device (CCD)-based vision system for advanced driver assistance systems (ADASs). Conventional CMOS/CCD image sensors are confined to limited dynamic range that it impairs the imaging quality under undesirable environments for ADAS (e.g....Show More
Integration of Bioinspired Vision Principles Towards the Design of Autonomous Guidance, Navigation, and Control Systems
George Giakos;Tannaz Farrahi;Nicolas Douard;Michael Surovich;Suman Shrestha;Gloria Bauman;Anthony Benitati;Hussam Eldin Mohamed;Zoe Giakos;Na Ying;Michalis Zervakis;George Livanos
2018 9th International Conference on Information, Intelligence, Systems and Applications (IISA)
Year: 2018 | Conference Paper |
Cited by: Papers (6)
In this study, key-characteristics of different bioinspired vision systems are presented, and their importance in the design of autonomous navigation systems is highlighted. Two paradigms reflecting authors' research efforts in the design of vision systems, mimicking the human and animal retina, are presented. The first paradigm relates to the development of novel polymer nanostructures and nanoan...Show More
Integration of Bioinspired Vision Principles Towards the Design of Autonomous Guidance, Navigation, and Control Systems
George Giakos;Tannaz Farrahi;Nicolas Douard;Michael Surovich;Suman Shrestha;Gloria Bauman;Anthony Benitati;Hussam Eldin Mohamed;Zoe Giakos;Na Ying;Michalis Zervakis;George Livanos
Year: 2018 | Conference Paper |
Layout Design of an Asynchronous Time-Based Image Sensor with Shared DVS Module
Victor R. R. De Oliveira;Mirella M. De O. Carneiro;Fernanda D. V. R. Oliveira;Fernando A. P. Baruqui;José Gabriel R. C. Gomes
2024 37th SBC/SBMicro/IEEE Symposium on Integrated Circuits and Systems Design (SBCCI)
Year: 2024 | Conference Paper |
In the asynchronous time-based image sensor (ATIS), capture is performed asynchronously by each pixel when the dynamic vision sensor (DVS) module detects significant luminance change. The DVS module control aims at avoiding redundant capture. Furthermore, time-based capture allows for high dynamic range imaging. Each original ATIS pixel is composed by a capture module and a DVS module, resulting i...Show More
A 240 × 180 130 dB 3 µs Latency Global Shutter Spatiotemporal Vision Sensor
Christian Brandli;Raphael Berner;Minhao Yang;Shih-Chii Liu;Tobi Delbruck
Event-based dynamic vision sensors (DVSs) asynchronously report log intensity changes. Their high dynamic range, sub-ms latency and sparse output make them useful in applications such as robotics and real-time tracking. However they discard absolute intensity information which is useful for object recognition and classification. This paper presents a dynamic and active pixel vision sensor (DAVIS) ...Show More
A 128$\times$ 128 120 dB 15 $\mu$s Latency Asynchronous Temporal Contrast Vision Sensor
This paper describes a 128 times 128 pixel CMOS vision sensor. Each pixel independently and in continuous time quantizes local relative intensity changes to generate spike events. These events appear at the output of the sensor as an asynchronous stream of digital pixel addresses. These address-events signify scene reflectance change and have sub-millisecond timing precision. The output data rate ...Show More
This paper introduces a high dynamic range pixel for early vision processing. Early vision is the first stage to subsequently extract semantic information for image processing or video analytics. This paper proposes to bring said processing to the focal plane, next to a high dynamic range image sensor working on the principle of lateral overflow capacitor. This brings the benefits of processing sc...Show More
In recent years, visual sensors have been quickly improving towards mimicking the visual information acquisition process of human brain by responding to illumination changes as they occur in time rather than at fixed time intervals. In this context, the so-called neuromorphic vision sensors depart from the conventional frame-based image sensors by adopting a paradigm shift in the way visual inform...Show More
Low-Power Techniques on a CMOS Vision Sensor Chip for Event Generation by Frame Differencing with High Dynamic Range
2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
This paper addresses low-power design techniques on a CMOS vision chip working in global shutter mode for event generation by frame differencing with a per-pixel algorithm for high dynamic range (HDR). In particular, the paper focuses on the inclusion of the dynamic source follower (DSF) as buffer in exchange of the conventional source follower (CSF) in both the front-end sensor and the per-pixel ...Show More
Electronically Foveated Dynamic Vision Sensor
2022 IEEE International Conference on Omni-layer Intelligent Systems (COINS)
Year: 2022 | Conference Paper |
Cited by: Papers (6)
This paper proposed a vision system which implements a foveal mechanism to concentrate the attention and dynamically control the center and size of region of interest. The core of the system is an electronically-foveated dynamic vision sensor. An architecture and implementation of an electronically-foveated dynamic vision sensor is proposed. Simulation results demonstrating its operation are provi...Show More
In-vivo imaging of neural activity with dynamic vision sensors
Gemma Taverni;Diederik Paul Moeys;Fabian Friedrich Voigt;Chenghan Li;Celso Cavaco;Vasyl Motsnyi;Stewart Berry;Pia Sipilä;David San Segundo Bello;Fritjof Helmchen;Tobi Delbruck
2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)
Year: 2017 | Conference Paper |
Cited by: Papers (3)
Optical recording of neural activity using calcium or voltage indicators requires cameras capable of detecting small temporal contrast in light intensity with sample rates of 10 Hz to 1 kHz. Large pixel scientific CMOS image sensors (sCMOS) are typically used due to their high resolution, high frame rate, and low noise. However, using such sensors for long-term recording is challenging due to thei...Show More
Super-Resolution Spike Event-based Polarimetric Dynamic Vision Sensor p(DVS) Cognitive Imaging
Anthony Beninati;Martin Nowak;Nicolas Douard;Joe Lanzi;Ridwan Hussain;Yi Wang;Suman Shrestha;Zoe Giakos;George C. Giakos
2019 IEEE International Conference on Imaging Systems and Techniques (IST)
Year: 2019 | Conference Paper |
In this study, a novel experimental design of a cognitive imaging system aiming at enhancing the spatial and temporal resolution of neuromorphic vision sensors, is presented. Super resolution images of moving or semi-obstructed targets, by means of the “Polarimetric Dynamic Vision Sensor (pDVS)” system, were obtained. This system improves the contrast sensitivity and proves to be an efficient stra...Show More
A Single-Slope PWM Imaging Method for Multi-Mode Dynamic Vision Sensor
2021 IEEE 14th International Conference on ASIC (ASICON)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
To break through the limitation of dynamic vision sensor (DVS) in object recognition and classification, a pulse width modulation (PWM) imaging method in a multi-mode DVS which integrates temporal contrast detection with brightness measurement is proposed. The improved logarithmic photoreceptor with pulse coding strategy ensures a theoretical intra-scene dynamic range of 130 dB. The 128×128 vision...Show More
An SNN-Based and Neuromorphic-Hardware-Implementable Noise Filter with Self-adaptive Time Window for Event-Based Vision Sensor
2021 International Joint Conference on Neural Networks (IJCNN)
Year: 2021 | Conference Paper |
Cited by: Papers (3)
Event-based dynamic vision sensors (DVS), inspired by biological vision systems, lead to new sensing and computing paradigms. The novel sensors output the sensed signal alone with many noise events asynchronously. Data-preprocessing for filtering these noises is significant before utilizing the data in applications such as classification, tracking and motion-data extraction. This paper describes a...Show More
Front and Back Illuminated Dynamic and Active Pixel Vision Sensors Comparison
Gemma Taverni;Diederik Paul Moeys;Chenghan Li;Celso Cavaco;Vasyl Motsnyi;David San Segundo Bello;Tobi Delbruck
Back side illumination has become standard image sensor technology owing to its superior quantum efficiency and fill factor. A direct comparison of front and back side illumination (FSI and BSI) used in event-based dynamic and active pixel vision sensors (DAVIS) is interesting because of the potential of BSI to greatly increase the small 20% fill factor of these complex pixels. This brief compares...Show More
A Novel Illumination-Robust Hand Gesture Recognition System With Event-Based Neuromorphic Vision Sensor
Guang Chen;Zhongcong Xu;Zhijun Li;Huajin Tang;Sanqing Qu;Kejia Ren;Alois Knoll
The hand gesture recognition system is a noncontact and intuitive communication approach, which, in turn, allows for natural and efficient interaction. This work focuses on developing a novel and robust gesture recognition system, which is insensitive to environmental illumination and background variation. In the field of gesture recognition, standard vision sensors, such as CMOS cameras, are wide...Show More
A Novel Rotational Laser Vision Sensor for Industrial Robot Calibration
2024 4th International Symposium on Artificial Intelligence and Intelligent Manufacturing (AIIM)
Year: 2024 | Conference Paper |
Industrial robots require high-precision calibration to perform tasks with accuracy and reliability in real-world environments. This study presents a novel rotational laser vision sensor designed to enhance the calibration accuracy of industrial robots. The key contribution of this paper is the high-precision modeling and calibration method for the proposed sensor, which effectively improves accur...Show More
On-Device Event Filtering with Binary Neural Networks for Pedestrian Detection Using Neuromorphic Vision Sensors
Fernando Cladera;Anthony Bisulco;Daniel Kepple;Volkan Isler;Daniel D. Lee
2020 IEEE International Conference on Image Processing (ICIP)
Year: 2020 | Conference Paper |
Cited by: Papers (13)
In this work, we present a hardware-efficient architecture for pedestrian detection with neuromorphic Dynamic Vision Sensors (DVSs), asynchronous camera sensors that report discrete changes in light intensity. These imaging sensors have many advantages compared to traditional frame-based cameras, such as increased dynamic range, lower bandwidth requirements, and higher sampling frequency with lowe...Show More
An Optically-Reconfigurable PUF Based on Logarithmic Photoreceptor of CMOS Dynamic Vision Sensors
In this brief, a novel optically-reconfigurable physical unclonable function (OR-PUF) is presented for CMOS dynamic vision sensor (DVS). By utilizing the in-pixel logarithmic photoreceptor’s spatial photoresponse nonuniformity (PRNU) as the entropy source, raw physical unclonable function (PUF) bits having high reliability and randomness can be generated with monochromatic illumination in visible ...Show More
An Event-Driven High-Speed Imaging and Trace Detection ROIC for Cryogenic Infrared FPAs
Mingzhong He;Yufei Ai;Wengao Lu;Yi Zhuo;Qingjiang Xia;Runkun Zhu;Yacong Zhang;Zhongjian Chen
2024 IEEE International Symposium on Circuits and Systems (ISCAS)
Year: 2024 | Conference Paper |
This paper presents an event-driven readout integrated circuit (ROIC) for imaging and target-tracking infrared focal plane arrays (IRFPAs). The pixel circuit consists of event detection (ED) and imaging and trace detection (ITD). Based on the dynamic vision sensor (DVS) structure, ED encodes the temporal changes of infrared radiation into synchronized 1.5-bit events and transmits them to the off-c...Show More
Characterization Of Dim Light Response In DVS Pixel: Discontinuity of Event Triggering Time
2024 IEEE International Conference on Image Processing (ICIP)
Year: 2024 | Conference Paper |
Dynamic Vision Sensors (DVS) have recently generated great interest because of the advantages of wide dynamic range and low latency compared with conventional frame-based cameras. However, the complicated behaviors in dim light conditions are still not clear, restricting the applications of DVS. In this paper, we analyze the typical DVS circuit, and find that there exists discontinuity of event tr...Show More
A Novel Image Reconstruction Method Expanding Dynamic Range and Spatial Resolution
2006 IEEE International Conference on Robotics and Biomimetics
Year: 2006 | Conference Paper |
A practical method for expanding the dynamic range and resolution of imaging system for robot vision was proposed. The basic principle of the method is combining the half pixel offset high resolution image reconstruction with multiple image sensors high dynamic range image reconstruction. In the method, a special pattern of multiple image sensors is employed and the exposure time of sensors is dif...Show More
A 240×180 10mW 12us latency sparse-output vision sensor for mobile applications
Raphael Berner;Christian Brandli;Minhao Yang;Shih-Chii Liu;Tobi Delbruck
This paper proposes a 0.18um CMOS vision sensor that combines event-driven asynchronous readout of temporal contrast with synchronous frame-based active pixel sensor readout of intensity. The sensor is suitable for mobile applications because it allows low latency at low data rate and therefore, low system-level power consumption. The image frames can be used for scene analysis and the temporal co...Show More
An Event-Driven Stereo System for Real-Time 3-D 360° Panoramic Vision
A new multiperspective stereo concept for real-time 3-D panoramic vision is presented in this paper. The main contribution is a novel event-driven stereo approach enabling 3-D 360° high-dynamic-range panoramic vision for real-time application in a natural environment. This approach makes use of a sparse visual code generated by a rotating pair of dynamic vision line sensors. The use of this system...Show More
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