A cnn based approach for the point-light photometric stereo problem

F Logothetis, R Mecca, I Budvytis, R Cipolla - International Journal of …, 2023 - Springer
Reconstructing the 3D shape of an object using several images under different light sources
is a very challenging task, especially when realistic assumptions such as light propagation …

基于计算机视觉的工业金属表面缺陷检测综述

伍麟, 郝鸿宇, 宋友 - 自动化学报, 2024 - aas.net.cn
针对平面及三维结构金属材料的工业表面缺陷检测, 概述了视觉检测技术的基本原理和研究现状
, 并总结出视觉自动检测系统的关键技术包括光学成像技术, 图像预处理技术与缺陷检测器 …

Photometric-stereo-based defect detection system for metal parts

Y Cao, B Ding, J Chen, W Liu, P Guo, L Huang, J Yang - Sensors, 2022 - mdpi.com
Automated inspection technology based on computer vision is now widely used in the
manufacturing industry with high speed and accuracy. However, metal parts always appear …

Contrastive self-supervised representation learning framework for metal surface defect detection

M Zabin, ANB Kabir, MK Kabir, HJ Choi, J Uddin - Journal of Big Data, 2023 - Springer
Automated detection of defects on metal surfaces is crucial for ensuring quality control.
However, the scarcity of labeled datasets for emerging target defects poses a significant …

[PDF][PDF] Identification of defects in casting products by using a convolutional neural network

D Ekambaram, V Ponnusamy - IEIE Transactions on Smart …, 2022 - researchgate.net
The main perspective when ensuring dependability in speculations over accuracy in casting
parts is a project quality confirmation process that is both careful and meticulous under …

A novel image registration-based dynamic photometric stereo method for online defect detection in aluminum alloy castings

H Liu, X Wu, N Yan, S Yuan, X Zhang - Digital Signal Processing, 2023 - Elsevier
The adoption of three-dimensional (3D) measurement technology for parts surface defect
detection can improve inspection reliability. For online inspection purposes, 3D …

Drawing the Line: Deep Segmentation for Extracting Art from Ancient Etruscan Mirrors

R Sterzinger, S Brenner, R Sablatnig - International Conference on …, 2024 - Springer
Etruscan mirrors constitute a significant category within Etruscan art and, therefore, undergo
systematic examinations to obtain insights into ancient times. A crucial aspect of their …

Industry-Fit AI Usage for Crack Detection in Ground Steel

D Soukup, C Kapeller, B Raml, J Ruisz - Electronics, 2022 - mdpi.com
We investigated optimal implementation strategies for industrial inspection systems aiming
to detect cracks on ground steel billets' surfaces by combining state-of-the-art AI-based …

Classical Photometric Stereo in Point Lighting Environments: Error Analysis and Mitigation

S Brenner, R Sablatnig - 2024 International Conference on 3D …, 2024 - ieeexplore.ieee.org
While classical photometric stereo assumes parallel lighting and thus allows for efficient
solutions, this assumption is rarely met in practice. In acquisition setups using point-like light …

A cascaded GRU-based stereoscopic matching network for precise plank measurement

X Xiong, Y Li, J Liu, W Qin, L Qian - Measurement Science and …, 2024 - iopscience.iop.org
Wooden plank images in industrial measurements often contain numerous textureless
areas. Furthermore, due to the thin plate structure, the three-dimensional (3D) disparity of …