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B/W mode:
It defaults to be auto. The camera can automatically switch between color and black/white
according to the ambient illumination. It can also be a fixed mode, either choosing compulsory color or
compulsory black/white.
Backlight compensation:
Backlight compensation can effectively compensate the defect of dark subjects
when taking pictures in a backlight situation, providing the proper exposure for the subjects. After the backlight
compensation, the objects in backlight can be seen, but the things behind the objects are not concerned. It
defaults to be off.
Wide dynamic mode:
Wide dynamic is a technology used under the circumstances of very strong contrast
(Strong illumination outdoor and weak illumination indoor), high pass, strong backlight and light reflection to
allow the camera to see the features of images. Its main applications include looking at windows from inside,
entry/exit of parking lots, and entrance of a business hall, etc. When there co-exist high-brightness areas under
a strong light source (Daylight, lamp or reflex light, etc.) and low-brightness areas like shadow and backlight,
etc., the image output by the camera shall show the bright areas as being white due to the excessive exposure
to light, and the dark areas as being black due to the insufficient exposure to light. The image quality is severely
damaged. The camera has its limitation to display the brightest areas and darker areas at the same scene. The
limitation is commonly called “dynamic range”. This network camera uses the digital wide dynamic technology.
It supports three modes: Close (wide dynamic off), auto, manual 1, manual 2 and manual 3. Corresponding to
different wide dynamic adjustable ranges, users can choose different wide dynamic mode according to different
scenes. The wide dynamic is shown as below:
Fig. 34. Wide dynamic mode ON Fig. 35. Wide dynamic mode OFF
Shutter speed:
Auto, 1/25s~1/10000s. Users can select an appropriate shutter speed according to
circumstances for monitoring. Higher electric shutter speed is normally used for taking photos of objects in fast
movement, e.g. vehicles on the road. If the shutter speed is not fast enough, the objects in motion may look like
smeared or blurred when taking photos of objects in fast motion.
3D noise reduction:
The product introduces 3D-MCTF (motion-compensated filtering) for noise reduction.
This algorithm analyzes the time and space information of each pixel in each frame’s data so as to effectively
filter static and dynamic noises. It has trivial effects on the image definition and sharpness. The filtered pictures
can not only be clearer but also helpful for improving the image compression rate – because the limited
bandwidth is not wasted on the encoding of noises. The default option is to be off. Users can choose from
strongest, strong, normal and weak. After 3D noise reduction is set to be strongest, it is possible to cause the
smear images. The effect of 3D noise reduction is shown as below:
Fig. 36. 3D noise reduction ON Fig. 37. 3D noise reduction OFF
Secondary noise reduction:
the secondary noise is a kind of enhanced 2D noise reduction (2D - DNR)
technology, it is in view of the single frame image noise, via adjusting sharpness and gain control mode, is a kind
of comprehensive noise reduction algorithm. The default value is “automatic”, user can choose the value “1 ~
10”, the figures show that the highest ceiling. When setting to “automatic”, the system according to the scene,
environment light and other conditions automatically processes the image noise; Choosing “1”, maintaining
high sharpness, less handling noise, is to keep the scene edges clearly state a way of noise reduction; Choosing
“10”, to the greatest possible noise processing, the image looks more smooth and soft, part details look slightly
blurred. Due to the secondary noise reduction is to set the upper limit of a top, there are two different scenarios
(e.g., day and night) system will automatically control but not more than the upper limit of set. For some special
