A Tool Supporting the Extraction of Angling Effort Data from Remote Camera Image (Feature Article)

Greenberg, S. and Godin, T. (2015)
A Tool Supporting the Extraction of Angling Effort Data from Remote Camera Image (Feature Article). Fisheries Magazine, 40(6):276-287. American Fisheries Society, June. I am allowed to distribute a limited number of copies to readers for free. If interested, email saul@ucalgary.ca. Earlier version as Report 2013-1050-17.

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Abstract

Estimating angling effort on more than a few lakes can be prohibitively expensive using creel surveys and often requires finer scale angler distribution data than aerial surveys can provide. An alternate method uses remote cameras to capture images of lakes at hourly intervals over long time periods. Technicians then visually analyze the thousands of generated images for features of interest (e.g., angler counts and environmental conditions) and use those data to estimate angling effort. The problem is that the visual analysis step is time-consuming, expensive, and difficult to validate. Consequently, we elicited the strategies and best practices technicians used when analyzing images and identified bottlenecks. We then designed software, called TIMELAPSE, to better support image analysis. In use for several years, TIMELAPSE has proven a cost-effective method of estimating angling effort in British Columbia's small lakes fisheries; it significantly eases a technician's workflow and doubles the number of images they can process per hour.

Keywords

Angling effort, fisheries management, remote cameras, image analysis

Bibtex entry

@ARTICLE { 2015-ExtractionAnglingEffort.Report2013-1050-01,
CLASS = { Journal },
AUTHOR = { Greenberg, S. and Godin, T. },
TITLE = { A Tool Supporting the Extraction of Angling Effort Data from Remote Camera Image (Feature Article) },
VOLUME = { 40(6) },
YEAR = { 2015 },
MONTH = { June },
PAGES = { 276-287 },
JOURNAL = { Fisheries Magazine },
PUBLISHER = { American Fisheries Society },
DOI = { www.tandfonline.com/eprint/8bny8QFCyCwf6TuYejtw/full },
KEYWORDS = { Angling effort, fisheries management, remote cameras, image analysis },
NOTE = { I am allowed to distribute a limited number of copies to readers for free. If interested, email saul@ucalgary.ca. Earlier version as Report 2013-1050-17 },
}