Fig. 7From: TopoRoot: a method for computing hierarchy and fine-grained traits of maize roots from 3D imagingX-ray CT imaging of root crowns. A Each maize root crown was clamped and placed on a turntable, which was rotated for 3 min while radiographs were collected at a rate of 10 frames per second. B efX-CT software was used to reconstruct a 3D grayscale image from the scan, which is represented as a stack of image slices perpendicular to the z-axisBack to article page