SVS-Vistek SHR 10GigE, Manual

Page: 47 / 103

5.1.16 ROI / AOI
In partial scan mode or Area-Of-Interest (AOI) mode (or Region-Of-Interest (ROI)
mode) only a certain region of the sensor will be read.
Fig.: 5-18: AOI on area sensor
Selecting an AOI will reduce the number of horizontal lines being read. This will
reduce the amount of data to be transferred, thus increasing the maximum speed
in terms of frames per second.
With CCD sensors, setting an AOI on the left or right side does not affect the
frame rate, as lines must be read out completely.
With CMOS Sensors, AOI is sensor dependent. Some CMOS sensors require
the camera to read full horizontal sensor lines internally. Reducing horizontal size
with AOI might result in limited frame rate gain.
5.2 Camera features
The camera is embedded in its electronics and firmware feature.
5.2.1 Glass filter
The camera is equipped with a glass filter for sensor protection reasons (dust).
Optical length of the glass filter is included in the mount specifications.
5.2.2 Shading correction
The interactions between objects, illumination, and the camera lens might lead to
a non-uniform flatfield in brightness. Shading describes the non-uniformity of
brightness from one edge to the other or center towards edge(s).
Original and shading corrected image
5 Feature description 47