Operation modes in conventional CMOS image sensors with the electronic rolling shutter
Most of the CMOS image sensors have Electronic Rolling Shutter – the images are acquired by scanning line by line. Their strengths and weaknesses are well known and extremely wide usage made the technology somewhat perfect – Andrey might have already said this somewhere before.
There are CMOS sensors with a Global Shutter BUT (if we take the same optical formats):
- because of more elements per pixel – they have lower full well capacity and quantum efficiency
- because analog memory is used – they have higher dark current and higher shutter ratio
- CCD and CMOS Sensor Architecture and Readout Modes (nice pictures)
- Image sensors and shutter related artifacts
- Rolling Shutter (Wikipedia)
So, the typical sensor with ERS may support 3 modes of operation:
- Electronic Rolling Shutter (ERS) Continuous
- Electronic Rolling Shutter (ERS) Snapshot
- Global Reset Release (GRR) Snapshot
GRR Snapshot was available in the 10353 cameras but ourselves we never tried it – one should have write directly to the sensor’s register to turn it on. But now it is tested and working in 10393s available through the TRIG (0x14) parameter.