Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Matlab: inverse Radon transform

  1. Oct 19, 2006 #1
    Hopefully someone know image processing toolbox well enough to answer my question!

    I need to reconstruct an image from a sinogram, and I'm using the iradon(S,theta) function, where S is the sinogram image and theta is either a scalar or vector quantity of projection angles. However, we weren't given a set of projection angles to work with. Is there a way to look at the sinogram using image processing toolbox and extract the projection angle data?
  2. jcsd
  3. Oct 19, 2006 #2
    Nevermind, I got it.

    In case anyone is wondering,
    find the length of the matrix that defines the sinogram,
    then specify theta as going from 0:(length(S)-1), where S is your sinogram matrix.

    Apparently in the newest version of image processing toolbox you can define your own theta and simply use more or less projections than the image gives you.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook