Results 91 to 100 of about 12,539 (191)

In Vivo Skin 3‐D Surface Reconstruction and Wrinkle Depth Estimation Using Handheld High Resolution Tactile Sensing

Advanced Healthcare Materials, Volume 15, Issue 11, 20 March 2026.
A compact handheld GelSight probe reconstructs in vivo 3‐D skin topography with micron‐level precision using a custom elastic gel and a learning‐based surface normal to height map pipeline. The device quantifies wrinkle depth across various body locations and detects changes in wrinkle depth following moisturizer application.
Akhil Padmanabha, Arpit Agarwal, Catherine Li, Austin Williams, Dinesh K. Patel, Sankalp Chopkar, Achu Wilson, Ahmet Ozkan, Wenzhen Yuan, Sonal Choudhary, Arash Mostaghimi, Zackory Erickson, Carmel Majidi   +12 more
wiley   +1 more source

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 of Surfaces with Heterogeneous Reflection using Adaptive Diffuse-Specular Segregation [PDF]

, 2023
Siddharth Singh, Tomonari Furukawa
openalex   +1 more source

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

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

Detail-Aware Uncalibrated Photometric Stereo

ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023
Photometric stereo is the problem of jointly inferring the 3D reconstruction, reflectance, lighting and specularities of an object from a set of visual signals. Recently, some variational, uncalibrated, unsupervised and unified formulations have provided robust solutions to the problem while reducing the prior knowledge about the shape geometry or the ...
openaire   +2 more sources

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

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

Differentiable Display Photometric Stereo

2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
Photometric stereo leverages variations in illumination conditions to reconstruct surface normals. Display photometric stereo, which employs a conventional monitor as an illumination source, has the potential to overcome limitations often encountered in bulky and difficult-to-use conventional setups.
Seokjun Choi, Seungwoo Yoon, Giljoo Nam, Seungyong Lee 0001, Seung-Hwan Baek   +4 more
openaire   +2 more sources

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