3 ms·
It sounds from the implementation summary that it's equivalent to a higher bit-depth ADC, but that the higher-value bits are inferred by software somehow. I don
by ISL 11y ago
It sounds from the implementation summary that it's equivalent to a higher bit-depth ADC, but that the higher-value bits are inferred by software somehow. I don't think it would properly recover an image with a dark field with the exception of a single pixel with a value of 10^7 above the dark noise.
What would truly solve the dynamic-range problem is a logarithmic readout CCD.
(Thanks for the Foveon pointer; it's an elegant approach to color.)
- paulmd 11y agoIt's actually inferred by hardware - the paper handwaves it because they wanted to focus on the software, but basically they're talking about implementing a low-accuracy micro-ADC at every site that automatically wipes the charge when it hits a trigger voltage and counts every time it does so. Number of counts = site signal level. Not quite sure that's practical or how you'd implement it on a destructive-readout sensor, though. Right now the sensors with enough accuracy and sensitivity are all destructive.
- coldtea 11y ago>I don't think it would properly recover an image with a dark field with the exception of a single pixel with a value of 10^7 above the dark noise. Then again it doesn't matter, because that's a contrived example (the photography equivalent of a "microbenchmark").