A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
IEEE Spectrum
A survey of automated visual inspection
Computer Vision and Image Understanding
Computer Vision and Image Understanding
An Unbiased Detector of Curvilinear Structures
IEEE Transactions on Pattern Analysis and Machine Intelligence
The digital Michelangelo project: 3D scanning of large statues
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
ACM Transactions on Mathematical Software (TOMS)
ICP Registration Using Invariant Features
IEEE Transactions on Pattern Analysis and Machine Intelligence
The Ball-Pivoting Algorithm for Surface Reconstruction
IEEE Transactions on Visualization and Computer Graphics
A Four-step Camera Calibration Procedure with Implicit Image Correction
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
Laser Stripe Peak Detector for 3D Scanners. A FIR Filter Approach
ICPR '04 Proceedings of the Pattern Recognition, 17th International Conference on (ICPR'04) Volume 3 - Volume 03
Modelling and accuracy estimation of a new omnidirectional depth computation sensor
Pattern Recognition Letters
A review of recent range image registration methods with accuracy evaluation
Image and Vision Computing
Poisson surface reconstruction
SGP '06 Proceedings of the fourth Eurographics symposium on Geometry processing
Design and application of industrial machine vision systems
Robotics and Computer-Integrated Manufacturing
Global parametric image alignment via high-order approximation
Computer Vision and Image Understanding
3D surface acquisition and reconstruction for inspection of raw steel products
Computers in Industry
Review: Advances in 3D data acquisition and processing for industrial applications
Robotics and Computer-Integrated Manufacturing
A Laser Time-of-Flight Range Scanner for Robotic Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
A Perspective on Range Finding Techniques for Computer Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
Road Detection and Tracking from Aerial Desert Imagery
Journal of Intelligent and Robotic Systems
Fast and robust laser stripe extraction for 3D reconstruction in industrial environments
Machine Vision and Applications
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Measurement, inspection and quality control in industry have benefited from 3D techniques for imaging and visualization in recent years. The development of machine vision devices at decreased costs, as well as their miniaturization and integration in industrial processes, have accelerated the use of 3D imaging systems in industry. In this paper we describe how to improve the performance of a 3D imaging system for inline dimensional quality inspection of long, flat-rolled metal products manufactured in rolling mills we designed and developed in previous works. Two dimensional characteristics of rolled products are measured by the system: width and flatness. The system is based on active triangulation using a single-line pattern projected onto the surface of the product under inspection for range image acquisition. Taking the system calibration into account the range images are transformed into a calibrated point cloud representing the 3D surface reconstruction of the product. Two approaches to improve the line detection and extraction method used in the original system are discussed, one intended for high-speed processing with lower accuracy, and the other providing high accuracy while incurring higher computational time expenses. A mechanism to remove, or at least reduce, the effects of product movements while manufacturing, such as bouncing and flapping, is also proposed to improve the performance of the system.