Results 31 to 40 of about 12,022 (190)
Summary study of data-driven photometric stereo methods
Virtual Reality & Intelligent Hardware, 2020 Background: A photometric stereo method aims to recover the surface normal of a 3D object observed under varying light directions. It is an ill-defined problem because the general reflectance properties of the surface are unknown.
Qian Zheng, Boxin Shi, Gang Pan
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Fast Compressive 3D Single-pixel Imaging [PDF]
, 2016 In this work, we demonstrate a modified photometric stereo system with perfect pixel registration, capable of reconstructing continuous real-time 3D video at ~8 Hz for 64 x 64 image resolution by employing evolutionary compressed ...
Edgar, Matthew +4 more
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ReDDLE-Net: Reflectance Decomposition for Directional Light Estimation
Photonics, 2022 The surfaces of real objects can visually appear to be glossy, matte, or anywhere in between, but essentially, they display varying degrees of diffuse and specular reflectance.
Jiangxin Yang +6 more
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A Photometric Stereo Using Re-Projected Images for Active Stereo Vision System
Applied Sciences, 2017 In optical 3D shape measurement, stereo vision with structured light can measure 3D scan data with high accuracy and is used in many applications, but fine surface detail is difficult to obtain.
Keonhwa Jung +4 more
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Analysis of surface parametrizations for modern photometric stereo modeling [PDF]
, 2015 Tridimensional shape recovery based on Photometric Stereo (PS) recently received a strong improvement due to new mathematical models based on partial differential irradiance equation ratios.
Cremers, Daniel +2 more
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PHOTOMETRIC STEREO ASSISTED DRAWING OF ARCHITECTURAL RELIEFS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Geometric documentation is one of the most important parts of a documentary report. Despite the advances made in the field of line drawing of ancient relief surfaces, in most cases, human operator interaction is unavoidable.
A. Abzal, M. Saadatseresht, M. Varshosaz
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IEEE Access, 2023 Fatigue detection has many applications, one of them is intelligent transportation for accident prevention. It is challenging to detect driver fatigue adopting photometric stereo and 3D fatigue-related facial action unit identification.
Gulbadan Sikander +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 Smith, Lyndon Smith
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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.
Haefner, Bjoern +2 more
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Automated Optical Inspection System for O-Ring Based on Photometric Stereo and Machine Vision
Applied Sciences, 2021 This research developed an AOI (automated optical inspection) system for the O-Ring inspection. First, an AOI system was implemented to detect surface scratches, flow marks, non-fills, and indentations on elastomer O-Rings with high surface reflection ...
Fu-Sheng Yang +2 more
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