This is a follow-up of the new sitem of April 2019 on ELFIS first true HDR image
The ELFIS imager is the first image sensor ever combining following features:
- True HDR or “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)
Movie: The first “true” HDR movie made with the ELFIS sensor.
This movie demonstrates HDR in combination with true global shutter: the rotating black ring “cuts through” the dark interior background as well as through the sunlit outside background. The motion blur is not affected by the local light intensity.
The two upper frames are the HG (high gain) and LG (low gain) sub-frames as recorded
The bottom frame is the resulting HDR movie.
The movie is recorded under following conditions:
- IWR tframe=tint = 30ms thus fframe=33Hz
- Looking through the lab’s window to sunlit buildings in the Michiel Coxystraat
- Nikon 28mm lens, diaphragm set to 22 ( sic! this is a 15µm BSI pixel!)
- On-chip CDS and dark frame subtraction
- No PRNU correction, no linearization was done. Two defect rows were corrected
- The HDR image is created by a weighted interpolation between the HG and the LG frames
- The image is “histogram equalized” for display.