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Converting from 2D coordinate Systems

  1. Nov 17, 2006 #1
    I am trying to get from one 2D coordinate system to another 2D coordinate system. I found 2 corresponding points and each system. I did the following:

    [a1 a2 ] * [ x1,y1 ] = [u1,v1]
    [a3 a4] [ x2,y2] [u2,v2]

    or A*x = u

    if I use matlab to solve A = u*inv(x)

    when will A be a valid transformation matrix?
    Are there other methods to find transformation matrices?
  2. jcsd
  3. Nov 18, 2006 #2
    This is not a homework question, i'm just doing some image processing and just need some help.
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