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7 Camera
7.1 2D camera settings
Continued
Normalization
Normalization can be used if you have an image that is unevenly lit, i.e. when the
center of the image is light but the corners are dark. Normally there is no need to
use normalization; it is only likely to be needed when you have a large field of view
and a light background.
Normalization center X and Normalization center Y must be set for the point you
deem to be the lightest in the image. The current x and y coordinates are displayed
as you move the cursor over the image. (Right-click on the image and select Show
cursor position, followed by Position in pixels). Move the cursor to the lightest
point, read the coordinates and enter them.
Normalization steepness is set between 0 and 10. This value is used to adjust the
correction at the edges of the image. A low value results in a correction that
decreases towards the center of image. A high value results in a stronger correction
at the edges, but hardly any correction closer in towards the center. Usually
Normalization steepness should be set around 1.
Normalization magnitude X and Normalization magnitude Y control how large
the correction should be in the x axis and y axis, respectively. A high value results
in a large correction for each axis, while a low value results in a smaller correction.
Usually the correction factor should be between 0.5 and 0.9.
102
watch the tip in the camera image. Try to find a position in the x and y axes
where the robot tip does not appear to move in the camera image as the tip
is moved up and down. Enter these coordinates as Perspective center X
and Perspective center Y.
© Copyright 2014-2018 ABB. All rights reserved.
Product manual - FlexLoader Vision
3HAC051771-001 Revision: B
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