Results 81 to 90 of about 12,022 (190)

Autonomous Planetary Rover Navigation and Crater‐Based Map Augmentation for Path Planning and Rock Localization Using Space ROS

Engineering Reports, Volume 8, Issue 3, March 2026.
Autonomous planetary rovers operate in GPS‐denied, low‐texture, crater‐rich environments where traditional SLAM‐based navigation systems suffer from localization drift and unreliable obstacle handling. To address these challenges, this work proposes a Space‐ROS–based autonomous navigation framework integrating ROS2 with the NAV2 stack, RTAB‐Map visual ...
Imnul Haque Ruman Talukder, Hrittik Mural, S. M. Fahim Faisal, Avishak Talukdar, Shishir Chandra Das, Mumit Hassan   +5 more
wiley   +1 more source

Photometric Stereo in a Scattering Medium [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2015
Photometric stereo is widely used for 3D reconstruction. However, its use in scattering media such as water, biological tissue and fog has been limited until now, because of forward scattered light from both the source and object, as well as light scattered back from the medium (backscatter). Here we make three contributions to address the key modes of
Zak, Murez, Tali, Treibitz, Ravi, Ramamoorthi, David J, Kriegman   +3 more
openaire   +2 more sources

Exploring the Formation and Age of Irregular Mare Patches (IMPs) to the Southeast of the Chang'e‐5 Landing Site

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Recently, possible exceptionally young mare volcanic glass beads were discovered in Chang'e‐5 (CE‐5) samples. Isotopic dating suggests an age of approximately 120 Ma, presenting new challenges to existing lunar thermal evolution models. Thus, our research focuses on the source region of Rima Mairan, a branch of Rima Sharp, and its surrounding ...
Zhonglu Lei, Zhizhong Kang, Teng Hu, C. H. van der Bogert, Jinghao Cai, Xiaojian Xu, Harald Hiesinger   +6 more
wiley   +1 more source

Underwater Target 3D Reconstruction via Integrated Laser Triangulation and Multispectral Photometric Stereo

Journal of Marine Science and Engineering
With the gradual application of 3D reconstruction technology in underwater scenes, the design of vision-based reconstruction models has become an important research direction for human ocean exploration and development. The underwater laser triangulation
Yang Yang, Yimei Liu, Eric Rigall, Yifan Yin, Shu Zhang, Junyu Dong   +5 more
doaj   +1 more source

Solving Uncalibrated Photometric Stereo Using Total Variation [PDF]

Journal of Mathematical Imaging and Vision, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Quéau, Yvain, Lauze, François, Durou, Jean-Denis   +2 more
openaire   +3 more sources

Phytoplankton Tune Local pH to Actively Modulate Circadian Gravitactic Behavior

Advanced Physics Research, Volume 5, Issue 2, February 2026.
Diel vertical migration hides an unexpected twist: Phytoplankton quietly engineer their local pH landscape, splitting into behaviorally distinct sub‐groups which stay separated even in identical conditions. Circadian pH changes, occuring over the course of a day, reshape their gravitactic behavior and physiological functions in ways scientists have ...
Arkajyoti Ghoshal, Soumitree Mishra, Jayabrata Dhar, Hans‐Peter Grossart, Anupam Sengupta   +4 more
wiley   +1 more source

Fringe photometric stereo

Optica
In fringe projection profilometry (FPP), a high spatial frequency of fringe typically indicates powerful error suppression capability; however, it complicates phase unwrapping, necessitating a greater number of patterns and thus compromising the real-time performance of scanning. In this letter, we report a fringe photometric stereo (FPS) to completely
Geyou Zhang, Kai Liu, Shangcheng Qu, Ce Zhu   +3 more
openaire   +1 more source

Development of a Continuous, Uncoupled Fluorescence‐based Assay for Monitoring Methyltransferase Activity: Methylation Going Sour

ChemCatChem, Volume 18, Issue 3, 12 February 2026.
Methylation going sour: The first uncoupled fluorescence‐based assay was established to measure methyltransferase activity in a continuous fashion. Different use cases are presented, including the assay's compatibility with catalyst formulations other than purified enzymes, the determination of kinetic parameters, as well as the screening of a ...
Benjamin Panagiotis Chapple, Lisa M. Böhmer, Jörg Pietruszka   +2 more
wiley   +1 more source

Overcoming Shadows in 3-Source Photometric Stereo [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2011
Light occlusions are one of the most significant difficulties of photometric stereo methods. When three or more images are available without occlusion, the local surface orientation is overdetermined so that shape can be computed and the shadowed pixels can be discarded.
Hernández, Carlos, Vogiatzis, George, Cipolla, Roberto   +2 more
openaire   +2 more sources

UNO: Unified Self‐Supervised Monocular Odometry for Platform‐Agnostic Deployment

CAAI Transactions on Intelligence Technology, Volume 11, Issue 1, Page 205-222, February 2026.
ABSTRACT This work presents UNO, a unified monocular visual odometry framework that enables robust and adaptable pose estimation across diverse environments, platforms and motion patterns. Unlike traditional methods that rely on deployment‐specific tuning or predefined motion priors, our approach generalises effectively across a wide range of real ...
Wentao Zhao, Yihe Niu, Yanbo Wang, Tianchen Deng, Shenghai Yuan, Zhenli Wang, Rui Guo, Jingchuan Wang   +7 more
wiley   +1 more source