Results 41 to 50 of about 2,464,622 (250)

Active 6-D position-pose estimation of a spatial circle using monocular eye-in-hand system

open access: yesInternational Journal of Advanced Robotic Systems, 2018
Nuts and bolts are common components in assembly lines. Their position and pose estimation is a vital step for automatic assembling. Although many approaches using a monocular camera have been proposed, few works consider a monocular camera’s active ...
Xin Ma   +3 more
doaj   +1 more source

Sampled visual feedback pose estimation and regulation based on camera frame rates

open access: yesSICE Journal of Control, Measurement, and System Integration, 2023
This paper presents visual feedback 3D pose estimation/regulation methodologies in the sampled data setting by camera frame rates. Vision-based estimation/control problems have been studied by a number of research groups.
Tatsuya Ibuki   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Determining camera pose based on cylinder

open access: yes, 2006
Camera pose determination for cylinder with single camera is it problem that is referred little and more puzzled. Traditional pose estimation methods using point features, straight line features and conics features have corresponding problems when they ...
Wang Yuecao   +5 more
core   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

Improving Gait Analysis Techniques with Markerless Pose Estimation Based on Smartphone Location

open access: yesBioengineering
Marker-based 3D motion capture systems, widely used for gait analysis, are accurate but have disadvantages such as cost and accessibility. Whereas markerless pose estimation has emerged as a convenient and cost-effective alternative for gait analysis ...
Junhyuk Yang, Kiwon Park
doaj   +1 more source

Relative Pose Estimation of Non-Cooperative Space Targets Using a TOF Camera

open access: yesRemote Sensing, 2022
It is difficult to determine the accurate pose of non-cooperative space targets in on-orbit servicing (OOS). The visual camera is easily affected by the extreme light environment in space, and the scanning lidar will have motion distortion when the ...
Dianqi Sun   +3 more
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

Object-Centric Seamless Pose Estimation in Multi-Object Scenes by Scale Alignment of Ray Diffusion and Iterative Closest Point

open access: yesApplied Sciences
Robust estimation of camera trajectories from unconstrained image sequences remains a fundamental problem in computer vision and robotics. Recently, a diffusion-based camera tracking network has shown strong performance in sparse-view and single-object ...
YeonChang Jeong   +3 more
doaj   +1 more source

Automatic Pose Estimation of Uncalibrated Multi-View Images Based on a Planar Object with a Predefined Contour Model

open access: yesISPRS International Journal of Geo-Information, 2016
We have presented a framework to obtain camera pose (i.e., position and orientation in the 3D space) with real scale information of the uncalibrated multi-view images and the intrinsic camera parameters automatically.
Cailin Li, Langming Zhou, Wenhe Chen
doaj   +1 more source

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