Fail to align faro scans with photos

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    Zuzana Ďuríčková CR

    Hello Manolis,

    did you import your laser scan with color? In most cases this is necessary for correct alignment with images. You can also try to raise the number of detected and preselector features in the alignment settings or add more control points in common areas. 

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    Manolis

    Hi Zuzana,

    Thanks for your reply. 

    The laser scan and photos were taken in different lighting environments and the photo's lighting and color are way better than that of Faro scan. Perhaps, that's the reason why I cannot align them.

    Thus, I'm thinking about:

    1. add more photos and control points;

    2. or just align all the photos and compute the transformation from photos to the scan mesh, so as to generate a texture map for the laser scan with photos' color.

    Obviously, the later one is more time-consuming. Hopefully, I'll succeed with the first method ;)

    Thanks again for your suggestions.

    Manolis

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    ValerioPaolux

    Hi Manolis,

    I combine Faro scans and images all the time. If your scans are colored you should not need CPs to merge all. However, you may need to set  "merge components only=false" and if that is not sufficient you may want to try increasing the max feature per image count to 40k or 80k. Control Points should be your last resource, but even then a mere 3 points in 4 images should be enough to give you 1 component.
    Cheers,

    Valerio

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    Manolis

    Hi Valerio,

    It works!

    There is one component consisting of faro scans aligned with photos, even though some scans and photos go to other components : |.

    Thanks for your suggestions! I'll try to add more scans and photos to increase the quality.

    Best Wishes,

    Manolis


     

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