Alignment of Thermal Cameras

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    Götz Echtenacher

    Hi Bart,

    what do you mean by feeding in? Manually creating an xml / xmp file for camera location? That's quite clever I think.  :-)

    From what I have gathered reading through posts with alignment problems, I figure that RC strictly needs some self detected features to be able to operate at all.

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    bart.p1990

    Hi Götz,

    Thank you again for the reply. I had already considered using an XMP file to manually input alignment. The problem is that my design is modular and therefore not precisely located relative to the 'normal' cameras. A calibration is therefore needed to guarantee good relative alignment. 

    It seems that RC can come up with multiple solutions to the alignment problems based on image features. Some of them make sense, others don't. The problem is that I don't have exact lens and camera parameters. They thus have to be estimated by RC, making it harder to find the one 'true' solution.

    Since the thermal and 'normal' cameras contain such different information. I have my doubts about the matches it makes based on image features. Best would be if it ONLY considered CPs when positioning the cameras. One of my thermal images had 0 features and is still aligned somewhat correctly, so RC is considering CPs somehow. It is just hard for me to figure out what to do to create a reliable calibration method. I guess I should at least measure lens characteristics on my thermal sensors more thoroughly.

    I am almost at the end of my project, so I will not invest more time in improving the alignment for now, but this will definitely be in my recommendation for the person that continues with my work.  

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    Götz Echtenacher

    Hi bart,

    also thank you!

    The info on RC using images with 0 features but CPs is quite valuable!

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