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CD40047_R04_allPIXA_User-Manual.docx
151
If you observe according to the standard conditions, the line resolution is the same as the
transport resolution; the value “4” must be applied. In some applications it might be helpful, if
the camera displays correct images even if the transport resolution differs from the resolution in
CCD line direction which is useful for example if the transport resolution is lower than the optical
one.
If you prefer to receive pixels in a non-square shape (transport resolution is not the same as the
resolution in CCD direction), the value of the line resolution may be lowered to the transport
resolution which means that the camera internally applies a subpixel-based correction. The
result is that the images do not have any colored edges, even if the transport resolution does
not match to the resolution in CCD direction (=optical resolution).
For calculation of the setting value, you may use one of the following formulas:
Either
𝐿𝑖𝑛𝑒 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒 =
𝑇𝑟𝑎𝑛𝑠𝑝𝑜𝑟𝑡𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛(𝑑𝑝𝑖) ∗ 4
𝑂𝑝𝑡𝑖𝑐𝑎𝑙𝑅𝑒𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛(𝑑𝑝𝑖) ∗ 𝑐𝑜𝑠 (𝛼)
Or
𝐿𝑖𝑛𝑒 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒 =
𝑂𝑝𝑡𝑖𝑐𝑎𝑙𝑃𝑖𝑥𝑒𝑙𝑆𝑖𝑧𝑒 (
𝑚𝑚
𝑝𝑖𝑥𝑒𝑙
) ∗ 4
𝑇𝑟𝑎𝑛𝑠𝑝𝑜𝑟𝑡𝑃𝑖𝑥𝑒𝑙𝑆𝑖𝑧𝑒(
𝑚𝑚
𝑝𝑖𝑥𝑒𝑙
) ∗ 𝑐𝑜𝑠 (𝛼)
𝛼
viewing angle in transport direction (0° = perpendicular)
Function of the subpixel line shift:
With subpixel compensation
Without subpixel compensation
Содержание allPIXA
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