The ELFIS imager is the first image sensor ever combining following features:
- True HDR (“MAF HDR”, motion artifact free HDR)
- Global shutter using GS technology,
- Allowing low noise CDS readout
- Enabling Global Shutter (IWR) without dark current penalty
- Backside illumination
- TDI radiation hard design
It is developed under ESA contract 4000116089 “European Low Flux Image Sensor”, in collaboration with LFoundry (I) and Airbus (F).
![The first “true” HDR image of the ELFIS sensor.](https://caeleste.be/wp-content/uploads/2019/04/ELFIStrueHDR-1024x576.jpg)
The above image is taken under following conditions
- Looking through the lab’s window to sunlit buildings at the other side of the street
- Nikon 55mm lens, diaphragm set to 22 (!)
- IWR tframe=tint = 30ms
- On-chip CDS and dark frame subtraction
- No PRNU correction, no linearization, no bad pixel correction, no other cosmetic corrections.
- The HDR image is created by a simple threshold at 80% of the HG saturation.
- The image is “histogram equalized”
ELFIS first true HDR image