Vivotek Supreme IP9165-LPR User Manual page 61

Below is the procedure to perform the automated Focus function:
1. Select from the bottom of the screen whether you want to perform focus adjustment on
the Full view or within a Custom focus window. You can create a custom window and
click and drag the window to a desired position on screen.
2. It is recommended to Reset to the default back focus position of the sensor board.
3. You can use the Open iris checkbox (default) to increase the iris size for a better focus
adjustment result.
4. Click to select the Fine-tune focus or the Full-range scan buttons. When a full-range
scan is selected, a full-range scan through the camera's entire focal length can take
about 30 to 80 seconds. If not, the auto focus scan will only go through the length where
optimal focus may occur, and that takes about 15 to 20 seconds. In theory, best results
of the auto scan can be acquired when the camera's iris is fully open.
5. Wait for the scan to complete. After a short while, the clearest image obtained should
be displayed and the optimal focus range achieved. Use the arrow marks on the sides
to fine-tune the focus if you are not satisfied with the results. You may still need to use
the arrow marks to fine-tune the focus depending on the live image on your screen. ">"
means moving from wide to tele end; and "<" tele to wide.
The methodology of using the Resize Buttons at the upper left corner of the streaming
window is the same as that on the home page.
Focus window:
By default, the optimal focus is found on a full view window. You may designate a custom
window within your current field of view to acquire the best focus out of it. However, you
can not place a focus window on a distant background, e.g., a hall way that stretches
away for 3 meters or farther. Doing so you will not benefit from the Focus window
function.
■ Full view: The focus tuning takes place by referring to the full view.
■ Custom: You can create a focus window and drag it to a place of interest in your view
window. Note that it is recommended to use this function only when you have a solid
object in your view window that is showing a consistent color or texture. This function will
not take effect if you set the focus window on a distant background.
You can try the Snapshot focus function (in Applications > Package management) when
applied in the above mentioned scenario.
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User's Manual - 61