103
Views
1
CrossRef citations to date
0
Altmetric
Scientific and Technical

Calibrating UVA reflectance photographs – standardisation using a low-cost method

ORCID Icon
Pages 109-117 | Received 20 Mar 2018, Accepted 11 May 2018, Published online: 22 Jul 2018
 

Abstract

Objective: While established methods for the calibration of visible light photographs are well defined, the use of these approaches in UVA reflectance photography is less well understood. A systematic, low-cost and simple method for the production of well-defined grey calibration standard targets for UVA reflectance photography, with a particular emphasis on low reflectivity surfaces, along with a comparison with standard visible light photographic standards is presented here.

Methods: Grey calibration standard targets suitable for use in the UVA region were produced, based on optimised methods from the literature. The standards were assessed using UV-Visible reflection spectroscopy, and visible and UVA light photography, and their behaviour compared with a commercially available visible light photographic calibration chart.

Results: Calibration standards with a relatively flat reflection response in the UVA region with a variety of reflectances between 2% and 35% were prepared. Imaging of the standards in both UV and visible light demonstrated the differences between these standards and the ones specifically designed for visible light photography.

Conclusions: A low cost and simple method for the production of low reflectance UVA calibration targets, suitable for UVA reflectance photography has been described and tested against commercially available visual light calibration standards. These new UV suitable standards have potential for use in a wide range of applications such as forensics, biology and cosmetic science.

Disclosure statement

No potential conflict of interest was reported by the authors.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 65.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 502.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.