Common Solutions
There are two basic technical solutions that are used to provide WDR cameras:
- Multi-frame imaging – where the camera captures more than one frame or "version" of the field of view, each frame has different dynamic range, and the camera combines the different frames to produce one WDR frame. This technique is also known for still images as HDR imaging
- Non-linear sensors – usually logarithmic sensors, where the sensitivity of the sensor at different illumination levels is different, and enables the capture of a wide dynamic range image in one frame.
Read more about this topic: Wide Dynamic Range
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