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screen. Left click and drag toward upper left to draw an area, then image will
recover.
PTZ
Click the button to zoom. Left click and drag toward lower right to draw an area. The
pixels of this area will be amplified and will cover the whole screen. Left click and
drag toward upper left to draw an area, then the image will recover. Double click a
point in the image and the point will be centered.
Full Screen
Click this button to display full screen. Double click or press Esc to exit.
4.1.2
Image Adjustment
4.1.2.1
Brightness
Due to low light situation, the image will look completely or partially dark and
hard to recognize. Web client provides the following functions to increase
image brightness and ensure surveillance quality.
*Enable IR Lamp
In low light situation, IR lamp can be started to get better surveillance images.
Click
Increase Image Brightness
Go to Settings>Camera>Image>Image Adjustment, drag Brightness slide
bar to adjust image brightness.
Slower Shutter Speed
Camera shutter speed means the cycle of the sensor calculating light input
amount. Therefore, the slower the speed is, the brighter the image will be.
Note: If the target object is moving fast, this method is not applicable.
Go to Settings>Camera>Image>Exposure, user can set shutter mode as
auto or manual, and set Shutter Lower Limit.
Increase Gain
Camera gain means the light sensitivity of a sensor. A high gain may reduce
light exposure for low light situation.
to enable IR lamp. Click
to disable it.
10
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