5
BLC
Once there is strong light at the back of the object, the main object video may become dark.
Backlight compensation technology is to automatically compensate the light to get vivid video.
You can refer to the following two figures to see the result of the backlight compensation
technology function.
Before After
WDR
When there is strong light, shadow and backlight all in one surveillance environment, the camera
output video may become white owning to the extra exposure while some sections become black
owning to the insufficient exposure. All of these will adversely affect the video quality. WDR is to
balance the light between these two sections.
You can compare the follow figure with the above figure on the left.
ATR and ATR-EX
ATR (Adaptive Tone-curve Reproduction) function allows the camera to digitally calculate the
video color again and then adjust the brightness to enhance the video quality. This function can
effectively enhance the color and black zone of the video when there is sharp light contrast in the
environments.
