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1 November 2016 Exploring Landscape Change in Mountain Environments With the Mountain Legacy Online Image Analysis Toolkit
Mary Ellen Sanseverino, Michael James Whitney, Eric Stowe Higgs
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Abstract

Since 1996, Mountain Legacy Project (MLP) researchers have been exploring change in Canada's mountain environments through the use of systematic repeat photography. With access to upwards of 120,000 systematic glass plate negatives from Canada's mountain west, the MLP field teams seek to stand where historic surveyors stood and accurately reshoot these images. The resulting image pairs are analyzed, catalogued, and made available for further research into landscape changes. In this article we suggest that repeat photography would fit well within the Future Earth research agenda. We go on to introduce the Image Analysis Toolkit (IAT), which provides interactive comparative image visualization and analytics for a wide variety of ecological, geological, fluvial, and human phenomena. The toolkit is based on insights from recent research on repeat photography and features the following: user-controlled ability to compare, overlay, classify, scale, fade, draw, and annotate images; production of comparative statistics on user-defined categories (eg percentage of ice cover change in each image pair); and different ways to visualize change in the image pairs. The examples presented here utilize MLP image pairs, but the toolkit is designed to be used by anyone with their own comparative images as well as those in the MLP collection. All images and software are under Creative Commons copyright and are open access for noncommercial use via the Mountain Legacy Explorer website. The IAT is at the beginning of its software life cycle and will continue to develop features required by those who use repeat photography to discover change in mountain environments.

© 2016 Sanseverino et al. This open access article is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/). Please credit the authors and the full source.
Mary Ellen Sanseverino, Michael James Whitney, and Eric Stowe Higgs "Exploring Landscape Change in Mountain Environments With the Mountain Legacy Online Image Analysis Toolkit," Mountain Research and Development 36(4), 407-416, (1 November 2016). https://doi.org/10.1659/MRD-JOURNAL-D-16-00038.1
Received: 1 July 2016; Accepted: 1 September 2016; Published: 1 November 2016
KEYWORDS
Canada
environmental change
field methodology
historical imagery
image analysis
image visualization
landscape classification
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