Photo Quadrat Selection Tool

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

Description

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.

• Required Products: Image Processing Toolbox; MATLAB
• MATLAB release: MATLAB 7.13 (R2011b)
• Other requirements: Developed in 64 bit Linux (FC13, 2010a), runs in 32 and 64 bit Windows XP and 7 (2011a, 2011b, respectively). 4GB RAM minimum, or you may have memory problems given the prospective quadrat size (default 2048x2048).