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
openaire +3 more sources
Three-Dimensional Reconstruction with a Laser Line Based on Image In-Painting and Multi-Spectral Photometric Stereo [PDF]
Sensors, 2021 This paper presents a multi-spectral photometric stereo (MPS) method based on image in-painting, which can reconstruct the shape using a multi-spectral image with a laser line.
Liang Lu +4 more
doaj +2 more sources
The Dynamic Photometric Stereo Method Using a Multi-Tap CMOS Image Sensor [PDF]
Sensors, 2018 The photometric stereo method enables estimation of surface normals from images that have been captured using different but known lighting directions. The classical photometric stereo method requires at least three images to determine the normals in a ...
Takuya Yoda +5 more
doaj +2 more sources
Photometric stereo data for the validation of a structural health monitoring test rig [PDF]
Data in BriefPhotometric stereo uses images of objects illuminated from various directions to calculate surface normals which can be used to generate 3D meshes of the object.
Jennifer Blair +9 more
doaj +2 more sources
Photometric Stereo-Based Depth Map Reconstruction for Monocular Capsule Endoscopy [PDF]
Sensors, 2020 The capsule endoscopy robot can only use monocular vision due to the dimensional limit. To improve the depth perception of the monocular capsule endoscopy robot, this paper proposes a photometric stereo-based depth map reconstruction method. First, based
Yang Hao +6 more
doaj +2 more sources
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.
Boxin Shi, Gang Pan, Qian Zheng
exaly +3 more sources
Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors [PDF]
Advanced Science, EarlyView.A MoTe2/WSe2/Cl–SnSe2 unipolar barrier photodetector is demonstrated, in which the WSe2 layer effectively blocks majority‐carrier injection, yielding suppressed dark current and enhanced near‐infrared (NIR) sensing. The device achieves high detectivity, a wide linear dynamic range, and fast response under 1310 nm illumination, enabling high‐fidelity 3D
Jung Pyo Hong +21 more
wiley +2 more sources
DRM-Based Colour Photometric Stereo Using Diffuse-Specular Separation for Non-Lambertian Surfaces [PDF]
Journal of Imaging, 2022 This paper presents a photometric stereo (PS) method based on the dichromatic reflectance model (DRM) using colour images. The proposed method estimates surface orientations for surfaces with non-Lambertian reflectance using diffuse-specular separation ...
Boren Li, Tomonari Furukawa
doaj +2 more sources
A Photometric Stereo Using Re-Projected Images for Active Stereo Vision System
Applied Sciences (Switzerland), 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.
Minho Chang
exaly +3 more sources
Three-Dimensional Reconstruction from Single Image Base on Combination of CNN and Multi-Spectral Photometric Stereo [PDF]
Sensors, 2018 Multi-spectral photometric stereo can recover pixel-wise surface normal from a single RGB image. The difficulty lies in that the intensity in each channel is the tangle of illumination, albedo and camera response; thus, an initial estimate of the normal ...
Liang Lu +4 more
doaj +2 more sources