Results 101 to 110 of about 188,468 (230)

Comparison of DSO and ORB‐SLAM3 in Low‐Light Environments With Auxiliary Lighting and Deep Learning Based Image Enhancing

Journal of Field Robotics, Volume 42, Issue 7, Page 3748-3771, October 2025.
ABSTRACT In the evolving landscape of robotic navigation, the demand for solutions capable of operating in challenging scenarios, such as low‐light environments, is increasing. This study investigates the performance of two state‐of‐the‐art (SOTA) visual simultaneous localization and mapping (VSLAM) algorithms, direct sparse odometry (DSO) and ORBSLAM3,
Francesco Crocetti, Raffaele Brilli, Alberto Dionigi, Mario L. Fravolini, Gabriele Costante, Paolo Valigi   +5 more
wiley   +1 more source

Application of Reflectance Transformation Imaging to Experimental Archaeology Studies

Heritage, 2020
In this work, we present a study on experimental archaeology replicas of 170,000-year-old digging sticks excavated in 2012 in the archaeological site of Poggetti Vecchi (Grosseto, Italy). One of the techniques used for documenting and studying the sticks
Silvia Florindi, Anna Revedin, Biancamaria Aranguren, Vincenzo Palleschi   +3 more
doaj   +1 more source

Corinto: A Young, Extensively Rayed Crater That Produced a Billion Secondaries on Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Corinto crater is a fresh, 13.9 km diameter impact crater in Elysium Planitia that produced one of the most extensive systems of thermally distinct rays and secondary craters on Mars, extending up to ∼2,000 km and covering a nearly 180° arc. It is the youngest crater of its size on Mars and impacted between 0.1 and 2.5 Ma into Early Amazonian ...
M. Golombek, S. Hibbard, C. Bloom, M. Deahn, N. Warner, N. Williams, I. J. Daubar, C. B. Hundal, A. Lagain, S. Piqueux, C. Edwards   +10 more
wiley   +1 more source

Inline Wear Detection in High-Speed Progressive Dies Using Photometric Stereo [PDF]

MATEC Web of Conferences
The progressive forming of complex components, including blanking, deep-drawing, and bending, represents an economically efficient sheet metal processing method.
Moske Jonas, Kutlu Hasan, Steinmeier Adrian, Groenewold Phil, Santos Pedro, Kuijper Arjan, Weinmann Andreas, Groche Peter   +7 more
doaj   +1 more source

Average surface roughness evaluation using 3-source photometric stereo technique

International Journal of Metrology and Quality Engineering, 2016
This paper presents a technique for measuring surface roughness (Ra), using photometric stereo method. The method utilizes three or more images of the measured surface from the same viewpoint, taken sequentially under different illumination conditions ...
Somthong Thammarat, Yang Qingping
doaj   +1 more source

Real-time stereo matching on CUDA using Fourier descriptors and dynamic programming

Computational Visual Media, 2019
Computation of stereoscopic depth and disparity map extraction are dynamic research topics. A large variety of algorithms has been developed, among which we cite feature matching, moment extraction, and image representation using descriptors to determine
Mohamed Hallek, Fethi Smach, Mohamed Atri   +2 more
doaj   +1 more source

(R)-evolution in the implementation of photometric stereo – Application to archaeology [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
There are two main families of photographic 3D reconstruction methods. On the one hand, so-called geometric methods (photogrammetry), which use images of the scene taken from different viewpoints, are based on the principle of triangulation.
A. Laurent, A. Laurent, B. Coupry, J. Mélou, Y. Quéau, C. Fritz, J.-D. Durou   +6 more
doaj   +1 more source

On Generating Synthetic Datasets for Photometric Stereo Applications

Computers
The mathematical model for photometric stereo makes several restricting assumptions, which are often not fulfilled in real-life applications. Specifically, an object surface does not always satisfies Lambert’s cosine law, leading to reflection issues ...
Elisa Crabu, Giuseppe Rodriguez
doaj   +1 more source

Correction to: One-Day Outdoor Photometric Stereo Using Skylight Estimation [PDF]

, 2019
Jiyoung Jung, Joon‐Young Lee, In So Kweon   +2 more
openalex   +1 more source

Disparity estimation of stereo-endoscopic images using deep generative network

ICT Express
A novel disparity estimation pipeline is proposed for 3D reconstruction of dynamic soft tissues in minimally invasive surgery (MIS), which uses a deep generative network to learn manifold distributions of reasonable disparity maps from past stereo images
Bo Yang, Siyuan Xu, Lirong Yin, Chao Liu, Wenfeng Zheng   +4 more
doaj   +1 more source