Results 21 to 30 of about 120,019 (255)

Active 3D positioning and imaging modulated by single fringe projection with compact metasurface device

Nanophotonics, 2023
Three-dimensional (3D) information is vital for providing detailed features of the physical world, which is used in numerous applications such as industrial inspection, automatic navigation and identity authentication.
Jing Xiaoli, Li Yao, Li Junjie, Wang Yongtian, Huang Lingling   +4 more
doaj   +1 more source

A Spatial AI-Based Agricultural Robotic Platform for Wheat Detection and Collision Avoidance

AI, 2022
To obtain more consistent measurements through the course of a wheat growing season, we conceived and designed an autonomous robotic platform that performs collision avoidance while navigating in crop rows using spatial artificial intelligence (AI).
Sujith Gunturu, Arslan Munir, Hayat Ullah, Stephen Welch, Daniel Flippo   +4 more
doaj   +1 more source

Estimating Visibility of Annotations for View Management in Spatial Augmented Reality Based on Machine-Learning Techniques

Sensors, 2019
Augmented Reality (AR) is a class of “mediated reality” that artificially modifies the human perception by superimposing virtual objects on the real world, which is expected to supplement reality.
Keita Ichihashi, Kaori Fujinami
doaj   +1 more source

Indirect Time-of-Flight with GHz Correlation Frequency and Integrated SPAD Reaching Sub-100 µm Precision in 0.35 µm CMOS

Sensors, 2023
The purpose of this work is to prove the suitability of integrated single-photon avalanche diode (SPAD)-based indirect time-of-flight (iTOF) for sub-100 µm precision depth sensing using a correlation approach with GHz modulation frequencies.
Michael Hauser, Horst Zimmermann, Michael Hofbauer   +2 more
doaj   +1 more source

Sparse depth sensing for resource-constrained robots [PDF]

The International Journal of Robotics Research, 2019
We consider the case in which a robot has to navigate in an unknown environment, but does not have enough on-board power or payload to carry a traditional depth sensor (e.g., a 3D lidar) and thus can only acquire a few (point-wise) depth measurements.
Ma, Fangchang, Carlone, Luca, Ayaz, Ulas, Karaman, Sertac   +3 more
openaire   +5 more sources

Depth Sensing for 3DTV: A Survey

IEEE MultiMedia, 2013
In the context of 3D video systems, depth information could be used to render a scene from additional viewpoints. Although there have been many recent advances in this area, including the introduction of the Microsoft Kinect sensor, the robust acquisition of such information continues to be a challenge.
Sebastian Schwarz, Roger Olsson, Mårten Sjöström   +2 more
openaire   +5 more sources

An 8-Tap CMOS Lock-In Pixel Image Sensor for Short-Pulse Time-of-Flight Measurements

Sensors, 2020
An 8-tap CMOS lock-in pixel image sensor that has seven carrier-capturing and a draining time window was developed for short-pulse time-of-flight (TOF) measurements.
Yuya Shirakawa, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito   +4 more
doaj   +1 more source

3D DEPTH SENSING

, 2018
Postprint (published version)
Pavlidis, George, Royo Royo, Santiago
openaire   +3 more sources

Robust Fusion of LiDAR and Wide-Angle Camera Data for Autonomous Mobile Robots

Sensors, 2018
Autonomous robots that assist humans in day to day living tasks are becoming increasingly popular. Autonomous mobile robots operate by sensing and perceiving their surrounding environment to make accurate driving decisions.
Varuna De Silva, Jamie Roche, Ahmet Kondoz   +2 more
doaj   +1 more source

Towards Non-Invasive Diagnosis of Skin Cancer: Sensing Depth Investigation of Open-Ended Coaxial Probes

Sensors, 2021
Dielectric properties of biological tissues are traditionally measured with open-ended coaxial probes. Despite being commercially available for laboratory use, the technique suffers from high measurement error. This prevents the practical applications of
Cemanur Aydinalp, Sulayman Joof, Tuba Yilmaz   +2 more
doaj   +1 more source