Link: https://novoviz.com/variable-frame-rate-spad-camera/
The NVx5VFR-HW variable frame rate camera was developed for applications requiring high sensitivity and/or frame rate but with reduced output bandwidth. The camera combines the benefits of a SPAD camera, namely the single-photon resolution and fast operating speeds, with those of an event camera—low output data rates.
Features:
- 480 x 320 or 256 x 192 SPAD pixels
- Event-based readout
- Adjustable event threshold
- 20ns global shutter
- On-chip pixel binning
- USB 3.0
Event camera emulation
[...] because there is a single sensor and a single acquisition, the two modalities are inherently synchronized in time and space, without genlocking, cross-sensor calibration, or timestamp drift. The SPAD sensor thus functions as a flexible substrate that can be reprocessed into multiple imaging modalities entirely in software.
HDR Imaging
[...] photon-counting approach lets each pixel build its own exposure curve, avoiding the clipping and noise floor issues that limit standard CMOS or CCD imaging.
Instantaneous adaptation to lighting variation
[...] photon-counting approach lets the sensor adapt instantly to drastic lighting shifts, with no exposure recalibration, no motion blur, and no saturation, capturing both the bright and near-dark scenes with equal clarity in the same brief 2ms window.
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