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How does IMAQ Unwrap work?

G'Day All,

I've been looking at the IMAQ Unwrap VI in the Vision toolkit, and I'd like to find out how the unwrapping routine actually works. I understand that the image data inside an annulus arc is converted to a rectangle, but how is the interpolation carried out? I can't find much info using the normal LabVIEW documentation channels, except for the following:

>
> Interpolation Type specifies the interpolation algorithm used in the unwrapping process.
> There are two options for the interpolation algorithm:
>
> 0: Zero Order is the nearest-neighbor interpolation.
> 1: Bi-Linear interpolation is the default value.
>

If anyone has any ideas, diagrams and/or equations on how this is acheived, I really like to hear from you!


cheers,
Christopher




Copyright © 2004-2023 Christopher G. Relf. Some Rights Reserved. This posting is licensed under a Creative Commons Attribution 2.5 License.
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