Results 41 to 50 of about 12,022 (190)
A Variational Stereo Method for the Three-Dimensional Reconstruction of Ocean Waves [PDF]
, 2011 We develop a novel remote sensing technique for the observation of waves on the ocean surface. Our method infers the 3-D waveform and radiance of oceanic sea states via a variational stereo imagery formulation.
Benetazzo, Alvise +3 more
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ACCURACY OF 3D RECONSTRUCTION IN AN ILLUMINATION DOME [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 The accuracy of 3D surface reconstruction was compared from image sets of a Metric Test Object taken in an illumination dome by two methods: photometric stereo and improved structure-from-motion (SfM), using point cloud data from a 3D colour laser ...
L. MacDonald +5 more
doaj +1 more source
Joint optimisation model for light source position based on a combined target [PDF]
MATEC Web of ConferencesPhotometric stereo vision, as a non-contact three-dimensional imaging technology, can achieve fast and high-precision reconstruction of normal vectors and three-dimensional morphology of object surfaces by resolving the intensity changes under different ...
Kong Xiangjin +5 more
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Robust Photometric Stereo Using Learned Image and Gradient Dictionaries
, 2017 Photometric stereo is a method for estimating the normal vectors of an object from images of the object under varying lighting conditions. Motivated by several recent works that extend photometric stereo to more general objects and lighting conditions ...
Moore, Brian E. +2 more
core +1 more source
Multi-View Stereo with Single-View Semantic Mesh Refinement [PDF]
, 2017 While 3D reconstruction is a well-established and widely explored research topic, semantic 3D reconstruction has only recently witnessed an increasing share of attention from the Computer Vision community.
Ciccone, Marco +3 more
core +2 more sources
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 +1 more source
Geometric Prior-Guided Self-Supervised Learning for Multi-View Stereo
Remote Sensing, 2023 Recently, self-supervised multi-view stereo (MVS) methods, which are dependent primarily on optimizing networks using photometric consistency, have made clear progress. However, the difference in lighting between different views and reflective objects in
Liman Liu +4 more
doaj +1 more source
Medieval Coins of Three Different Types and of Various States of Preservation
Journal of Open Archaeology DataWe have developed a device for digitizing coins using photometric stereo, which serves two purposes. For inventory it allows identifying a coin, which has been digitized before, and avoids mixing up similar coins.
Thomas Dunker +3 more
doaj +1 more source
Sensors, 2021 Direct visual odometry algorithms assume that every frame from the camera has the same photometric characteristics. However, the cameras with auto exposure are widely used outdoors as the environment often changes. The vignetting also affects the pixel’s
Yinming Miao, Masahiro Yamaguchi
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Polarisation photometric stereo [PDF]
Computer Vision and Image Understanding, 2017 This paper concerns a novel approach to fuse two-source photometric stereo (PS) data with polarisation information for complete surface normal recovery for smooth or slightly rough surfaces. PS is a well-established method but is limited in application by its need for three or more well-spaced and known illumination sources and Lambertian reflectance ...
openaire +1 more source