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User Manual (Ver. 1.0) - Main Functions
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4. Use
ImageScalingHorizontal
and
ImageScalingVertical
to specify the horizontal and vertical
scaling ratio. For more information on how to specify the scaling ratio, see
and
Limitations on Image Scaling Mode (Xscale)
When using Xscale, the horizontal and vertical scaling factors determine the size of the virtual pixels in
the scaled image. This information, plus any ROI that has been preset by the user, determines the
maximum number of whole virtual pixels possible in the output image. However, Xscale automatically
rounds down the width to the nearest value that is a multiple of 8 and rounds down the height to the
nearest value that is a multiple of 2. It then deletes 4 pixels from the right edge and 2 pixels at the
bottom.
For example, suppose the image's width is set to 2472 pixels and ImageScalingHorizontal is set to 0.5.
In this scenario, the scaled image's width would be automatically adjusted from 1236 (= 2472 x 0.5)
virtual pixels to 1232 (multiple of 8), and then would have 4 pixels removed from the right edge,
resulting in a final scaled image width of 1228 pixels (= 1232 - 4).
Notes:
The Xscale calculator (Xscale-calc.xlsx) is available to calculate the scaling factor needed to meet
your requirements for pixel size and/or output resolution. You can calculate the scaling factors
from the following two options:
l
Option 1: Calculate the ROI and scaling ratio by entering the pixel size and the desired
scaled resolution. This option is useful when replacing an old camera with a new one.
l
Option 2: Calculate the scaling ratio needed to get from a starting resolution (full or after an
ROI has been set) to the desired scaled resolution. This can offer more flexibility than
standard ROI and/or binning options, especially with color cameras.
See
(Example 2 and 3) for more information.