Results 21 to 30 of about 12,539 (191)
Combining Photogrammetry and Photometric Stereo to Achieve Precise and Complete 3D Reconstruction
Sensors, 2022 Image-based 3D reconstruction has been employed in industrial metrology for micro-measurements and quality control purposes. However, generating a highly-detailed and reliable 3D reconstruction of non-collaborative surfaces is still an open issue.
Ali Karami, Fabio Menna, Fabio Remondino
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3D DIGITIZATION OF HERITAGE: PHOTOMETRIC STEREO CAN HELP [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 There are mainly two families of photographic 3D reconstruction. Photogrammetry techniques work according to the principle of triangulation, from the matching of different views, while photometric techniques link the appearance of a 3D point to the ...
J. Mélou +4 more
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Photometric Segmentation: Simultaneous Photometric Stereo and Masking [PDF]
2019 International Conference on 3D Vision (3DV), 2019 This work is concerned with both the 3D-reconstruction of an object using photometric stereo, and its 2D-segmentation from the background. In contrast with previous works on photometric stereo which assume that a mask of the area of interest has been computed beforehand, we formulate 3D-reconstruction and 2D-segmentation as a joint problem.
Bjoern Haefner +2 more
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RMAFF-PSN: A Residual Multi-Scale Attention Feature Fusion Photometric Stereo Network
Photonics, 2023 Predicting accurate normal maps of objects from two-dimensional images in regions of complex structure and spatial material variations is challenging using photometric stereo methods due to the influence of surface reflection properties caused by ...
Kai Luo +4 more
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Depth Super-Resolution Meets Uncalibrated Photometric Stereo [PDF]
, 2017 A novel depth super-resolution approach for RGB-D sensors is presented. It disambiguates depth super-resolution through high-resolution photometric clues and, symmetrically, it disambiguates uncalibrated photometric stereo through low-resolution depth ...
Cremers, Daniel +3 more
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FCN-Based 3D Reconstruction with Multi-Source Photometric Stereo
Applied Sciences, 2020 As a classical method widely used in 3D reconstruction tasks, the multi-source Photometric Stereo can obtain more accurate 3D reconstruction results compared with the basic Photometric Stereo, but its complex calibration and solution process reduces the ...
Ruixin Wang +4 more
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Dynamic Photometric Stereo [PDF]
, 2005 A new dynamic photometric stereo technique is presented, which facilitates the analysis of rapidly moving surfaces containing mixed two- and three-dimensional concomitant features. A new approach termed narrow infra-red photometric stereo (NIRPS) is described as an evolution of the existing photometric stereo (PS) technique.
Melvyn L. Smith, Lyndon N. Smith
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Variational Uncalibrated Photometric Stereo under General Lighting [PDF]
, 2019 Photometric stereo (PS) techniques nowadays remain constrained to an ideal laboratory setup where modeling and calibration of lighting is amenable. To eliminate such restrictions, we propose an efficient principled variational approach to uncalibrated PS
Cremers, Daniel +5 more
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Photometric stereo for outdoor webcams [PDF]
2012 IEEE Conference on Computer Vision and Pattern Recognition, 2012 We present a photometric stereo technique that operates on time-lapse sequences captured by static outdoor webcams over the course of several months. Outdoor webcams produce a large set of uncontrolled images subject to varying lighting and weather conditions. We first automatically select a suitable subset of the captured frames for further processing,
Jens Ackermann +3 more
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Light invariant photometric stereo
Optics Express, 2023 An imaging setup that enables unsynchronized photometric stereo (PS) for Lambertian objects based on modulated light sources is presented. Knowing the specific frequency of the modulated light source allows to filter out any other light in the scene. This creates an image that depends only on the particular light source while ignoring the ambient light.
Yuval Braun, Hugo Guterman
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