Wide dynamic range is a feature in some Axis network cameras that handles a wide range of lighting conditions in a scene. In a scene with extremely bright and dark areas or in backlight situations where a person is in front of a bright window, a typical camera would produce an image where objects in the dark areas would hardly be visible.
WDR solves this by applying various techniques to enable objects in both bright and dark areas to be visible.
Axis Forensic WDR technology, enhances the ability to capture detail in challenging light conditions and allowing surveillance operators to see forensic levels of detail in both dark and bright areas at the same time., Forensic WDR enables this ability both for high-resolution cameras and for surveillance areas with high levels of motion.
WDR – Dynamic Contrast
With Axis’ WDR – Dynamic Contrast, the camera performs an advanced tone mapping, where some brightness levels are dropped to decrease the bit depth to a format that a computer screen can handle.
In this tone mapping, both the darkest and the brightest parts are taken into account, resulting in more details on both ends.
WDR – Dynamic Capture
Axis’ WDR – Dynamic Capture works by acquiring several images with different exposure times for each image.
These pictures are then combined in a composite, where both the brightest and the darkest parts are kept, resulting in an image with exceptional clarity and sharpness.