Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms

Biological imaging is an essential tool to visualise and obtain reference data. In this context, the programme ImageJ has been widely used in many disciplines to determine the surface areas of planar biological samples in marine and aquatic experimental biology. Despite its range of advantages, Imag...

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Main Authors: Yusuf C. El-Khaled, Alexandra Kler Lago, Selma D. Mezger, Christian Wild
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Diversity
Subjects:
Online Access:https://www.mdpi.com/1424-2818/14/4/272
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author Yusuf C. El-Khaled
Alexandra Kler Lago
Selma D. Mezger
Christian Wild
author_facet Yusuf C. El-Khaled
Alexandra Kler Lago
Selma D. Mezger
Christian Wild
author_sort Yusuf C. El-Khaled
collection DOAJ
description Biological imaging is an essential tool to visualise and obtain reference data. In this context, the programme ImageJ has been widely used in many disciplines to determine the surface areas of planar biological samples in marine and aquatic experimental biology. Despite its range of advantages, ImageJ is relatively time-consuming, because of the need to manually select the target areas for quantification. Hence, we here evaluated the freeware programme Photopea as a potential alternative by comparing the accuracy and time required for the surface area quantification of exemplary algae compared with established ImageJ analysis. Our results show that Photopea is equally accurate as ImageJ, but 45% more time efficient. This time efficiency originates from using colour contrast that reduces the time needed to analyse each picture. Photopea thus offers an accurate, rapid, and cost-free tool to easily obtain reference data from field and laboratory experiments. This tool is particularly useful for experiments with an extensive sample size of specimens and thus can increase the power of study results.
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spelling doaj.art-13e3726b7f074b219059aeb08910aea02023-12-01T01:37:01ZengMDPI AGDiversity1424-28182022-04-0114427210.3390/d14040272Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and OrganismsYusuf C. El-Khaled0Alexandra Kler Lago1Selma D. Mezger2Christian Wild3Marine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, 28539 Bremen, GermanyMarine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, 28539 Bremen, GermanyMarine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, 28539 Bremen, GermanyMarine Ecology Department, Faculty of Biology and Chemistry, University of Bremen, 28539 Bremen, GermanyBiological imaging is an essential tool to visualise and obtain reference data. In this context, the programme ImageJ has been widely used in many disciplines to determine the surface areas of planar biological samples in marine and aquatic experimental biology. Despite its range of advantages, ImageJ is relatively time-consuming, because of the need to manually select the target areas for quantification. Hence, we here evaluated the freeware programme Photopea as a potential alternative by comparing the accuracy and time required for the surface area quantification of exemplary algae compared with established ImageJ analysis. Our results show that Photopea is equally accurate as ImageJ, but 45% more time efficient. This time efficiency originates from using colour contrast that reduces the time needed to analyse each picture. Photopea thus offers an accurate, rapid, and cost-free tool to easily obtain reference data from field and laboratory experiments. This tool is particularly useful for experiments with an extensive sample size of specimens and thus can increase the power of study results.https://www.mdpi.com/1424-2818/14/4/272image processingsurface area determinationAdobe Photoshopbiological imaging
spellingShingle Yusuf C. El-Khaled
Alexandra Kler Lago
Selma D. Mezger
Christian Wild
Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms
Diversity
image processing
surface area determination
Adobe Photoshop
biological imaging
title Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms
title_full Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms
title_fullStr Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms
title_full_unstemmed Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms
title_short Comparative Evaluation of Free Web Tools ImageJ and Photopea for the Surface Area Quantification of Planar Substrates and Organisms
title_sort comparative evaluation of free web tools imagej and photopea for the surface area quantification of planar substrates and organisms
topic image processing
surface area determination
Adobe Photoshop
biological imaging
url https://www.mdpi.com/1424-2818/14/4/272
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