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occasions, it requirements throughout the remaining set the upper limit of noise reduction, user can check to
enable the “mandatory” check box behind the secondary noise reduction, if enabled, the system will conduct
noise reduction with the set upper limit. In actual use, according to the different application scenarios, combine
3D noise reduction and the secondary noise reduction. 3D noise reduction is usually set to “weak”, the secondary
noise reduction is usually set to “automatic” or “5”. In order to get the best image effect, users still need according
to the difference of scenarios to determine an optimal value after debugging.
AGC:
AGC gain can be set to be auto, 6db, 12db, 18db, 24db, 30db, 36db, and 42db. The AGC gain is
adjustable when the electric shutter speed is set to be any parameters except “auto”. The electronic shutter is
usually used together with AGC gain. Higher the electronic shutter speed is, larger the AGC gain or the camera’s
brightness are, so that the luminous flux into the shutter can be increased and the image becomes clearer.
Moreover, the network camera has the function of electronic shutter automatically adjustable, that is to say,
having the shutter speed manually set as the lower bound and having the value of the AGC gain as the upper
bound. It can automatically increase the shutter speed to be one that is optimal for photo taking.
Image rotation:
There are possibilities that the camera is installed upside down due to various reasons. It is
able to set the camera to rotate its image 180 degree or 270 degree. It is not necessary to dismantle the shield
cover to re-install the camera and the upside-down image is restored to be normal. In other monitoring
circumstances, like traffic junctions that require watching red and green light, supermarket cashiers, counter of
financial business, narrow and long corridors or passages, the area that each camera can monitor is limited by the
environment if the camera is installed horizontally in the 16:9 form, and the advantage of HD wide screen is not
in use. This network camera has images’ 90 degree rotation function built in and can adjust the image display to
be 9:16. It is able to use the same camera to watch a wider area.
Exposure compensation:
50 – 250 for selection. Exposure compensation is a way for exposure
control. If a scene is complicated and its ambient light source is relatively dark, the exposure
compensation shall be increased to make the definition of the images distinctive.
ICR mode:
Due to the reason that infrared light of different wave lengths mixed in visible light
would affect the image effects, e.g. image blur and indentation. To add Auto ICR (infrared cut removal)
in front of the image sensor can effectively reduce affect of infrared light. In daytime or when the light
is sufficient, the IR-cut filter is switched on to cut off infrared light to avoid the image color offset; at
night or when light is poor, the IR pass filter should be switched on so as to use infrared light to
improve the night view of the camera and maintain better image quality. The camera with the Auto ICR
is called Day and Night Camera. The ways to change IR cut filter include manual, auto, timing or alarm. When
auto is set, the camera automatically makes its decision and adjusts the switching of the filters based on light.
When timing is set, the camera can set up the time for switching on/off the IR cut (As shown below). When
alarm is set, the ambient light illumination can be detected by the light sensor under the camera lens
so as to link the switch-on of the IR cut filter. When the switch is set to “automatic”, the camera automatically
determine and adjust the filter based on conditions in the light switch. The user can set the brightness and AGC
lower limit and upper limit.
Fig. 38.
When the switch is set to „Fixtime” requires the user to specify the IR cut open and close time.
Fig. 39.
