Results 41 to 50 of about 188,468 (230)
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
core +3 more sources
Self-calibrating Photometric Stereo by Neural Inverse Rendering [PDF]
European Conference on Computer Vision, 2022 This paper tackles the task of uncalibrated photometric stereo for 3D object reconstruction, where both the object shape, object reflectance, and lighting directions are unknown.
Junxuan Li, Hongdong Li
semanticscholar +1 more source
Fast Light-Weight Near-Field Photometric Stereo [PDF]
Computer Vision and Pattern Recognition, 2022 We introduce the first end-to-end learning-based solution to near-field Photometric Stereo (PS), where the light sources are close to the object of interest. This setup is especially useful for reconstructing large immobile objects.
Daniel Lichy +2 more
semanticscholar +1 more source
Non-Lambertian Multispectral Photometric Stereo via Spectral Reflectance Decomposition
International Joint Conference on Artificial Intelligence, 2023 Multispectral photometric stereo (MPS) aims at recovering the surface normal of a scene from a single-shot multispectral image captured under multispectral illuminations.
Jipeng Lv +4 more
semanticscholar +1 more source
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
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
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
doaj +1 more source
Spin-UP: Spin Light for Natural Light Uncalibrated Photometric Stereo [PDF]
Computer Vision and Pattern RecognitionNatural Light Uncalibrated Photometric Stereo (NaUPS) relieves the strict environment and light assumptions in classical Uncalibrated Photometric Stereo (UPS) methods.
Zong-Han Li +6 more
semanticscholar +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
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