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. Author manuscript; available in PMC: 2013 Jul 15.
Published in final edited form as: J Opt Soc Am A Opt Image Sci Vis. 2013 May 1;30(5):871–877. doi: 10.1364/JOSAA.30.000871

Fig. 2.

Fig. 2

Illustration of the block diagonal structure of the rotational invariant covariance matrix. The block size shrinks as the angular frequency k increases.