The physics are the same; the perception isn’t. (From 2021)
. Some of the cameras see colors and textures almost exactly the way the people who built them do. But they also see more. And less. The rover’s cameras imagine colors beyond the ones that human eyes and brains can come up with. And yet human brains still have to make sense of the pictures they send home.
Close-up, Mastcam-Z can see details about 1 millimeter across; from 100 meters out, it’ll pick up a feature just 4 centimeters wide. That’s better than you and me. It also sees color better—or, rather, “multispectrally,” capturing the broadband visible spectrum that human people are used to, but also about a dozen narrow-band not-quite-colors.
So on the one hand, the image processing team working on Perseverance’s raw feed can adjust Mars colors to Earthish colors. Or the team can simulate the spectra of Martian light hitting objects on Mars. That’d look a little different. No less true, but maybe more like what a human on Mars would actually see. Photograph: NASA/JPL-Caltech/ASU
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