Editing Scanning electron microscope (section)

===Photometric 3D rendering from a single SEM image===
This method requires an SEM image obtained in oblique low angle lighting. The grey-level is then interpreted as the slope, and the slope integrated to restore the specimen topography. This method is interesting for visual enhancement and the detection of the shape and position of objects; however the vertical heights cannot usually be calibrated, contrary to other methods such as photogrammetry.<ref name="Mignot-2018"/>
<gallery widths="220px" heights="160px">
File:FLY EYE.jpg|SEM image of a house fly compound eye surface at 450× magnification
File:Fly eye detail.jpg|Detail of the previous image
File:Fly Eye 3D SEM Image with form.jpg|SEM 3D reconstruction from the previous using [[shape from shading]] algorithms
File:Fly Eye 3D SEM Image without form.jpg|Same as the previous, but with lighting homogenized before applying the shape from shading algorithms
</gallery>