Vivotek IP8372 User Manual download pdf (Page 50)

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50 - User's Manual

Measurement Window: This function allows user to set measurement window(s) for low light

compesation.

■ Full view: Calculate the full range of view and offer appropriate

light compesation.

■ Custom: This option allows you to manually add customized windows as inclusive or exclusive

regions. A total of 10 windows can be set. The inclusive window refers to “weighted window“; the

exclusive window refers to “ignored window“. It adopts the weighted averages method to calculate

the value.

■ BLC: When selected, a BLC window will appear on screen meaning that the center of the scene

will be taken as a weighed area. This option enables light compensation for images that are too

dark or too bright to recognize; for example, for the dark side of objects that is posed against

bright sunlight.

Exposure control:

■

Exposure level: You can manually set the Exposure level, which ranges from -2.0 to +2.0 (dark

to bright). You can click and drag the semi-circular pointers on the Exposure time and Gain

control slide bars to specify a range of shutter time and Gain control values within which the

camera can automatically tune to an optimal imaging result. You may prefer a shorter shutter

time to better capture moving objects, while a faster shutter reduces light and needs to be

compensated by electrical brightness gains.

■

Exposure mode: Select Auto or Manual mode according to your needs.

Manual: Select Manual to set a xed exposure time and gain. Then, tune the slide bar to set the

Exposure time and Gain Control to the best image quality. A shorter exposure time allows less

amount of light to enter the sensor; while a higher gain control value generates certain amount of

noises.

Include

Weighted region

Ignored region

Exclude x

A total of 9 inclusive and exclusive windows can be created for a view. You can create Exclude

windows for the camera to ignore the lighting condition of certain areas.

Note that the title pane of the Include/Exclude windows is not included into the calculation. The

inclusive and exclusive windows can be placed one on top of another. The inclusive windows have a

higher priority. You can overlap these windows, and, if you place an exclusive window within a larger

inclusive window, the exclusive part of the overlapped windows will be deducted from the inclusive

window.

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Vivotek IP8372 User Manual Page 50