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Very nice writeup. As I was reading it I realized what a long way we've come since I started in machine vision. We had analog cameras and doing things like bad
by zwieback 4y ago
Very nice writeup. As I was reading it I realized what a long way we've come since I started in machine vision. We had analog cameras and doing things like bad pixel correction and per-pixel black offset correction were much harder, if not impossible.
- buildbot 4y agoYou mean a CCD or film? CCDs I thought this step was _essential_ for any decent quality - I had to implement a pipeline for processing RAWs for old digital backs, applying the dark frame & flat frame. Granted processing power was much lower back then if that is what you mean, would have taken a bit with 22MP files...
- naavis 4y agoThey are probably referring to cameras with CCD sensors but analog output, akin to older CCTV cameras. So any corrections on the digital raw data had to be implemented in the camera by the manufacturer, as the camera user only had access to analog data.
- zwieback 4y agoGood question, I meant older CCD cameras with analog (RS170 or similar) output, digitized by a frame grabber in the PC. That was what we used for industrial machine vision in the 90s and early 2000s.