Analyze - Compare

This command performs statistical comparisons between two images. An option also exists for generating a difference image from the two input images.

The three distance measures reported are:

d The normalized root mean squared distance measure.
r The normalized mean absolute distance measure.
e The worst case distance measure over a 2 x 2 pixel area.

There are also commands for comparison plotting of rows and columns from two images. This is quite helpful when comparing a phantom to a reconstruction. As with plotting of rows and columns, click the left mouse button over the desired cursor point to choose which row and column to plot.