The full form of DWDR is Digital Wide Dynamic Range.
DWDR is a software-based technology used in imaging, particularly in security cameras and other video equipment, to improve image quality in scenes with high contrast between bright and dark areas. It works by digitally adjusting the gamma to brighten the darker portions of the image, making them more visible. This helps to capture detail that would otherwise be lost in shadows when bright areas are properly exposed, and vice-versa.
Unlike traditional Wide Dynamic Range (WDR) which typically utilizes a hardware-based solution, DWDR relies on digital signal processing to achieve a similar effect. While it's generally less effective than hardware WDR, DWDR is a cost-effective alternative that is often implemented in devices where hardware WDR is not feasible or required.
In essence, DWDR dynamically adjusts the brightness and contrast across different parts of the image, resulting in a more balanced and detailed view, even in challenging lighting conditions.