Photo Quadrat Selection Tool

An interactive tool for manually selecting photo quadrats from a collection of images.


Updated 19 Jun 2012

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Quadrat selection is a common manual process in archaeology, biology, geology, and other fields whereby some projectively distorted square in a field-acquired image is normalized to allow for further quantifying actions. For example, this tool was developed for coral surveillance efforts, where benthic abundance estimates were found based on the segmentation of a collection of projectively normalized quadrat images.

This tool is interactive and easy to use. You click on the four corners of your quadrat in an image and are presented with the prospective quadrat. As you click and drag the corners you are shown the new quadrat. When satisfied, you may save the quadrat.

Cite As

Joshua Stough (2023). Photo Quadrat Selection Tool (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2011b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes

-OneImage: quit before selecting four corners (hit enter).
-README reflects change.
-Description changed to explicitly state Windows compatibility