On-line flatness measurement in the steelmaking industry

J Molleda, R Usamentiaga, DF Garcίa - Sensors, 2013 - mdpi.com
Shape is a key characteristic to determine the quality of outgoing flat-rolled products in the
steel industry. It is greatly influenced by flatness, a feature to describe how the surface of a …

Fast and robust laser stripe extraction for 3D reconstruction in industrial environments

R Usamentiaga, J Molleda, DF García - Machine Vision and Applications, 2012 - Springer
The use of 3D reconstruction based on active laser triangulation techniques is very complex
in industrial environments. The main problem is that most of these techniques are based on …

A profile measurement system for rail quality assessment during manufacturing

J Molleda, R Usamentiaga, ÁF Millara… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
Steel rails used in the transport sector and in industry are designed and manufactured to
support high stress levels generated by high-speed and heavy-loaded modern trains. In the …

An improved 3D imaging system for dimensional quality inspection of rolled products in the metal industry

J Molleda, R Usamentiaga, DF García, FG Bulnes… - Computers in …, 2013 - Elsevier
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 …

Effect of build orientation and part thickness on dimensional distortion in material jetting processes

A Khoshkhoo, AL Carrano, DM Blersch - Rapid Prototyping Journal, 2018 - emerald.com
Purpose The purpose of this paper is to elucidate the effect of part thickness and build
orientation upon the type and magnitude of distortion in material jetting processes …

In-line dimensional inspection of warm-die forged revolution workpieces using 3D mesh reconstruction

D Mejia-Parra, JR Sánchez, O Ruiz-Salguero… - Applied Sciences, 2019 - mdpi.com
Industrial dimensional assessment presents instances in which early control is exerted
among “warm”(approx. 600∘ C) pieces. Early control saves resources, as defective …

Distortion calibrating method of measuring rail profile based on local affine invariant feature descriptor

C Wang, Z Ma, Y Li, J Zeng, T Jin, H Liu - Measurement, 2017 - Elsevier
Measuring rail profile in the presence of multiple degrees of freedom vibration is a very
challenging task. This paper presents a novel method based on the local affine invariant …

Structured-light sensor using two laser stripes for 3D reconstruction without vibrations

R Usamentiaga, J Molleda, DF Garcia - Sensors, 2014 - mdpi.com
3D reconstruction based on laser light projection is a well-known method that generally
provides accurate results. However, when this method is used for inspection in uncontrolled …

Temperature measurement using the wedge method: Comparison and application to emissivity estimation and compensation

R Usamentiaga, DF García, J Molleda… - IEEE Transactions …, 2010 - ieeexplore.ieee.org
Temperature measurement based on infrared radiation depends on correctly adjusted
emissivity. However, emissivity configuration is complex as emissivity is not normally known …

A cross structured light sensor and stripe segmentation method for visual tracking of a wall climbing robot

L Zhang, J Sun, G Yin, J Zhao, Q Han - Sensors, 2015 - mdpi.com
In non-destructive testing (NDT) of metal welds, weld line tracking is usually performed
outdoors, where the structured light sources are always disturbed by various noises, such as …