Next Article in Journal
A Comprehensive Study on the Internet of Underwater Things: Applications, Challenges, and Channel Models
Next Article in Special Issue
Crack Detection in Concrete Tunnels Using a Gabor Filter Invariant to Rotation
Previous Article in Journal
The Resistance–Amplitude–Frequency Effect of In–Liquid Quartz Crystal Microbalance
Previous Article in Special Issue
Torsional Ultrasound Sensor Optimization for Soft Tissue Characterization
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(7), 1466; doi:10.3390/s17071466

A Novel Active Imaging Model to Design Visual Systems: A Case of Inspection System for Specular Surfaces

Department of Computer Technology, University of Alicante, Carretera San Vicente s/n, San Vicente del Raspeig, Alicante 03690, Spain
*
Author to whom correspondence should be addressed.
Received: 29 March 2017 / Revised: 7 June 2017 / Accepted: 20 June 2017 / Published: 22 June 2017
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2017)

Abstract

The use of visual information is a very well known input from different kinds of sensors. However, most of the perception problems are individually modeled and tackled. It is necessary to provide a general imaging model that allows us to parametrize different input systems as well as their problems and possible solutions. In this paper, we present an active vision model considering the imaging system as a whole (including camera, lighting system, object to be perceived) in order to propose solutions to automated visual systems that present problems that we perceive. As a concrete case study, we instantiate the model in a real application and still challenging problem: automated visual inspection. It is one of the most used quality control systems to detect defects on manufactured objects. However, it presents problems for specular products. We model these perception problems taking into account environmental conditions and camera parameters that allow a system to properly perceive the specific object characteristics to determine defects on surfaces. The validation of the model has been carried out using simulations providing an efficient way to perform a large set of tests (different environment conditions and camera parameters) as a previous step of experimentation in real manufacturing environments, which more complex in terms of instrumentation and more expensive. Results prove the success of the model application adjusting scale, viewpoint and lighting conditions to detect structural and color defects on specular surfaces. View Full-Text
Keywords: visual inspection; specular surfaces; structured lighting; quality control visual inspection; specular surfaces; structured lighting; quality control
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Azorin-Lopez, J.; Fuster-Guillo, A.; Saval-Calvo, M.; Mora-Mora, H.; Garcia-Chamizo, J.M. A Novel Active Imaging Model to Design Visual Systems: A Case of Inspection System for Specular Surfaces. Sensors 2017, 17, 1466.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top