Results 91 to 100 of about 12,022 (190)
The THEMIS Control Network of Mars
Earth and Space Science, Volume 13, Issue 1, January 2026.Abstract The accurate co‐registration of geospatial data is necessary to answer questions that cross‐cut disciplines and are key to understanding fundamental questions about our Solar System. To address this need and provide an updated product for Mars that is tied to a common reference frame, we have photogrammetrically controlled Thermal Emission ...
R. L. Fergason, L. Weller, M. T. Bland
wiley +1 more source
Contour Generator Points for Threshold Selection and a Novel Photo-Consistency Measure for Space Carving [PDF]
, 2003 Space carving has emerged as a powerful method for multiview scene reconstruction. Although a wide variety of methods have been proposed, the quality of the reconstruction remains highly-dependent on the photometric consistency measure, and the threshold
Isidoro, John, Sclaroff, Stan
core
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Extensive research over the past two decades has shown that early Mars likely had a warmer, wetter climate with widespread water activity. Ferromagnesian (Fe,Mg‐rich) clay deposits are compelling markers of these ancient environments, helping reconstruct Mars' hydrologic evolution, assess past habitability, and guide future exploration.
Jeremy Brossier +8 more
wiley +1 more source
Single‐Shot Initial Mutual Localization for Micro Aerial Swarms
IET Cyber-Systems and Robotics, Volume 8, Issue 1, January/December 2026.ABSTRACT Initial mutual localization of micro aerial swarms remains a challenging problem and is essential for establishing a common reference frame before coordinated flight. This task is difficult due to the limited scene overlap between nonadjacent drones, as well as sparse and low‐quality feature correspondences in environments with insufficient ...
Xiangyong Wen +4 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 +3 more
doaj +1 more source
Perspective‐Aware Fusion of Incomplete Depth Maps and Surface Normals for Accurate 3D Reconstruction
Electronics Letters, Volume 62, Issue 1, January/December 2026.We propose a novel perspective‐aware fusion approach for combining depth and surface normal maps. The approach employs a log‐depth substitution, which transforms the perspective fusion problem into an orthographic one. This transformation enables us to extend any gradient‐based orthographic fusion method to handle perspective data.
Ondrej Hlinka +2 more
wiley +1 more source
Semi-calibrated Near-Light Photometric Stereo [PDF]
, 2017 We tackle the nonlinear problem of photometric stereo under close-range pointwise sources, when the intensities of the sources are unknown (so-called semi-calibrated setup). A variational approach aiming at robust joint recovery of depth, albedo and intensities is proposed. The resulting nonconvex model is numerically resolved by a provably conver-gent
Quéau, Yvain, Wu, Tao, Cremers, Daniel
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
Inline Wear Detection in High-Speed Progressive Dies Using Photometric Stereo [PDF]
MATEC Web of ConferencesThe progressive forming of complex components, including blanking, deep-drawing, and bending, represents an economically efficient sheet metal processing method.
Moske Jonas +7 more
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 +2 more
doaj +1 more source