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. Author manuscript; available in PMC: 2011 Apr 19.
Published in final edited form as: J Vis. 2010 May 1;10(5):4. doi: 10.1167/10.5.4

Figure 2.

Figure 2

An example of the sequence of 12 intensity profiles for the upright E, used by the CAG algorithm. The green arcs show the parabolic functions fitted to the location of the 3 minima. The 6 images with the highest values for contrast amplitude (highlighted in green) were 5 to 10. The 3 images with the lowest RMS errors for the fitted parabola (highlighted in green), corresponding to the highest contrast gradients, were 5 to 7. Image 7 was chosen by the algorithm to best optimize both contrast amplitude and gradient (framed in green).