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How are they getting color? My impression is CT scan is mostly measuring density and x-ray absorption. Are they doing false color based on some sort of data (v
by caycep 4y ago
How are they getting color? My impression is CT scan is mostly measuring density and x-ray absorption. Are they doing false color based on some sort of data (vs photoshop?)
- alephxyz 4y agoLooks like a basic CT scan but using the Plasma colormap from matplotlib (or a similar one).
- ajnin 4y agoThe article mentions in passing that "The negative electrode is copper; its yellow color in our visualization means it’s denser than the other materials in the battery." So presumably the blue to yellow scale corresponds to material density.
- HPsquared 4y agoI think in this case it's just the density (absorption) but on some machines it's possible to use different energy levels of x-rays (so-called dual energy CT) to see variations in materials/chemistry, that works in a similar way to colour in the visual spectrum (different materials absorb different energy levels of light differently).