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Re^4: Abstract image registration or feature detection

by kikuchiyo (Friar)
on Jul 01, 2022 at 16:39 UTC ( #11145228=note: print w/replies, xml ) Need Help??


in reply to Re^3: Abstract image registration or feature detection
in thread Abstract image registration or feature detection [UPDATED w examples]

It seems that we're not on the same page. A picture is worth a thousand words: https://imgur.com/KxH62Sa

Each labeled red point from the reference image corresponds to the same labeled red point on the distorted image. And I know the coordinates for both. Similarly, one blue point on the reference image corresponds to one blue point on the distorted image, but I only know their coordinates on the reference, and I want to find them on the other.

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Re^5: Abstract image registration or feature detection
by LanX (Sage) on Jul 01, 2022 at 16:58 UTC
    Thanks the image is much clearer.

    As I said, solve the linear equations° for the red pairs to determine the projection matrix. (well depending one the number of known pairs)

    Once you have the matrix you can pair the blue ones too.

    Cheers Rolf
    (addicted to the Perl Programming Language :)
    Wikisyntax for the Monastery

    update

    °) Linear_equation_system#Matrix_equation

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