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Wavefront image sensor chip [PDF]

open access: yesOptics Express, 2010
We report the implementation of an image sensor chip, termed wavefront image sensor chip (WIS), that can measure both intensity/amplitude and phase front variations of a light wave separately and quantitatively. By monitoring the tightly confined transmitted light spots through a circular aperture grid in a high Fresnel number regime, we can measure ...
Cui, Xiquan   +3 more
openaire   +5 more sources

A non-contact interactive system for multimodal surgical robots based on LeapMotion and visual tags

open access: yesFrontiers in Neuroscience, 2023
In recent years, the integration of robots in minimally invasive surgery has gained significant traction in clinical practice. However, conventional contact-based human-computer interaction poses the risk of bacterial infection, significantly limiting ...
Xinkang Zhang   +8 more
doaj   +1 more source

End-to-End Automatic Classification of Retinal Vessel Based on Generative Adversarial Networks with Improved U-Net

open access: yesDiagnostics, 2023
The retinal vessels in the human body are the only ones that can be observed directly by non-invasive imaging techniques. Retinal vessel morphology and structure are the important objects of concern for physicians in the early diagnosis and treatment of ...
Jieni Zhang   +7 more
doaj   +1 more source

Low-Pressure Optical Detection, Location, and Quantification of Electrical Discharges in Aircraft Wiring Systems

open access: yesAerospace, 2022
Strict regulations issued by international administrative bodies limit the CO2 equivalent emissions for new aircraft, while increasing efficiency requirements.
Pau Bas-Calopa   +2 more
doaj   +1 more source

Perception Understanding Action: Adding Understanding to the Perception Action Cycle With Spiking Segmentation

open access: yesFrontiers in Neurorobotics, 2020
Traditionally the Perception Action cycle is the first stage of building an autonomous robotic system and a practical way to implement a low latency reactive system within a low Size, Weight and Power (SWaP) package.
Paul Kirkland   +3 more
doaj   +1 more source

Design of an SVM Classifier Assisted Intelligent Receiver for Reliable Optical Camera Communication

open access: yesSensors, 2021
Embedding optical camera communication (OCC) commercially as a favorable complement of radio-frequency technology has led to the desire for an intelligent receiver system that is eligible to communicate with an accurate light-emitting diode (LED ...
Md. Habibur Rahman   +4 more
doaj   +1 more source

Research on Crosstalk and Color Aliasing Compensation of Color Image Sensor Based on Artificial Neural Network

open access: yesIEEE Photonics Journal, 2022
In this paper, the image sensor compensation frameworks are established based on the correlation of pixel response characteristics; The pixel response model is established, and a method to measure the crosstalk of adjacent pixels of color image sensor ...
Qiang Wen   +6 more
doaj   +1 more source

Experimental evaluation of occupancy lighting control based on low-power image-based motion sensor

open access: yesSICE Journal of Control, Measurement, and System Integration, 2021
Occupancy lighting control, which is used to turn lights on/off based on the occupancy state measured by an occupancy sensor, is a popular and effective type of automatic lighting control. This paper clarifies the effectiveness of occupancy control based
Takuya Futagami, Noboru Hayasaka
doaj   +1 more source

Auto Complementary Exposure Control for High Dynamic Range Video Capturing

open access: yesIEEE Access, 2021
Recent trends in consumer electronics have led to a proliferation of high dynamic range (HDR) video acquisition and transmission studies. High-end video capturing systems increase the bit depth of each pixel to adapt to the high-contrast ambient light ...
Bing Han   +4 more
doaj   +1 more source

Pixel Level Characterization of Pinned Photodiode and Transfer Gate Physical Parameters in CMOS Image Sensors

open access: yesIEEE Journal of the Electron Devices Society, 2014
A method to extract the pinned photodiode (PPD) physical parameters inside a CMOS image sensor pixel array is presented. The proposed technique is based on the Tan et al. pinning voltage characteristic. This pixel device characterization can be performed
Vincent Goiffon   +6 more
doaj   +1 more source

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