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<p>[QUOTE="-jeffB, post: 4503601, member: 27832"]Not tomography (imaging a volume), that would be absolute overkill for the task at hand.</p><p><br /></p><p>We're good enough at inferring 3D structure from image sequences now that it's baked into Tesla automobiles. It would be easy enough to build up a good 3D model of a coin by spinning it in front of a high-res camera, ideally a few times with different lighting directions. From there, you could precisely measure wear, hits, damage, color, and probably even luster.</p><p><br /></p><p>But TPGs have established to <i>their</i> satisfaction that an objective measurement is not what the market wants. Or, to put it another way, it doesn't lead to a sustainable business model for them. I don't see a path for it to happen.[/QUOTE]</p><p><br /></p>
[QUOTE="-jeffB, post: 4503601, member: 27832"]Not tomography (imaging a volume), that would be absolute overkill for the task at hand. We're good enough at inferring 3D structure from image sequences now that it's baked into Tesla automobiles. It would be easy enough to build up a good 3D model of a coin by spinning it in front of a high-res camera, ideally a few times with different lighting directions. From there, you could precisely measure wear, hits, damage, color, and probably even luster. But TPGs have established to [I]their[/I] satisfaction that an objective measurement is not what the market wants. Or, to put it another way, it doesn't lead to a sustainable business model for them. I don't see a path for it to happen.[/QUOTE]
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