v 1.1.0
GSD Calibration tool
May 13, 2025
Not sure about the Ground Sample Distance (GSD) of your image? The GSD calibration tool lets you draw a line over a known object in the image—such as the width of a car—and input its real-world measurement. This allows the tool to accurately calculate the GSD, enabling precise measurement of other elements within the image.
New GSD Calibrator
How To Use
Go to the Roof-Measure-Pro tab and upload your image. Next, click on the Calibration tab above. Draw a line over an object with a known real-world length, then enter that measurement into the GSD Calibration Tool. Click Calibrate, and just like that, your image’s GSD will be calculated.