<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Hi,<div><br></div><div>I imagine you are looking for the area? You can make a polygon and measure the area of a shape. <a href="https://gis.stackexchange.com/questions/23355/calculating-polygon-areas-in-qgis">https://gis.stackexchange.com/questions/23355/calculating-polygon-areas-in-qgis</a></div><div><br></div><div>You can also use the distance measure tool in the toolbar and use the area option. <br><br><div dir="ltr">Nicolas Cadieux<div>Ça va bien aller!</div></div><div dir="ltr"><br><blockquote type="cite">Le 8 juin 2020 à 11:13, Sean Hill <seanhillsa@gmail.com> a écrit :<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr"><div>Is it possible to calculate surface volume from aerial photographs (orthomosaic maps in DEM tif file format) in QGIS?<br></div><div><br></div>Everything I have found on the internet refers to using<br>satellite images. I did find one article on generating surface<br>volume from drone imagery but is difficult to understand as it is<br>missing some steps and/or the steps aren't clear and do not render the<br>same results from step to step even though I follow the steps to the letter.<div><br></div><div>Please help</div><div><br></div><div>Sean</div></div>
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