Results 31 to 40 of about 12,539 (191)
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
doaj +1 more source
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
doaj +1 more source
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 +1 more source
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
core +1 more source
The Dynamic Photometric Stereo Method Using a Multi-Tap CMOS Image Sensor
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 +1 more source
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
doaj +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
Perspective Photometric Stereo with Shadows [PDF]
, 2013 High resolution reconstruction of 3D surfaces from images remains an active area of research since most of the methods in use are based on practical assumptions that limit their applicability. Furthermore, an additional complication in all active illumination 3D reconstruction methods is the presence of shadows, whose presence cause loss of information
Roberto Mecca +3 more
openaire +1 more source
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
doaj +1 more source
STEREO observations of stars and the search for exoplanets [PDF]
, 2011 The feasibility of using data from the NASA STEREO mission for variable star and asteroseismology studies has been examined. A data analysis pipeline has been developed that is able to apply selected algorithms to the entire data base of nearly a million
A. J. Norton +29 more
core +2 more sources