| Camera is not a photometer! |
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| Limited dynamic
range |
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| • | 8 bits captures
only 2 orders of magnitude of light intensity |
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| • | We can see ~10
orders of magnitude of light intensity |
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| Unknown,
nonlinear response |
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| • | pixel intensity amount of light
(# photons, or “radiance”) |
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| Solution: |
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| • | Recover response
curve from multiple exposures, then |
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| reconstruct the radiance
map |
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