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| Hard problem #2: |
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| scanning in the presence of occlusions |
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| < 30° |
| ? |
| 20° |
| ? |
| ? |
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| • | occlusions
(& self-occlusion) force grazing |
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| scans,
which lead to holes |
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| • | a
scanner with a fixed triangulation angle |
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| cannot
circumvent all occlusions |
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| • | a
hammer & chisel can reach places |
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| a
triangulation scanner cannot |
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