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3.4 The Display Menu
The displays menu is split into two logical groups. The first group
mainly serves to allow you to visualize the progress of the calculation.
The second group allows you to visualize the final wavefront, and various
internal data arrays.
The menu option Displays :: Show RMS Curvature generates a window
in which the RMS curvature signal of the corrected signal is shown.
As the calculation progresses, one should see the curvature become smaller,
and eventually settle down to a value dependent on the high order
aberrations within the system. This display is most useful for debugging,
and is not recommended as a general diagnostic.
The menu options Displays :: Show Zernike Graph and
Displays :: Show Zernike Table
show the magnitudes of the Zernike wavefront errors in graphical or tabular
form respectively.
As the calculation proceeds the low order Zernike residual errors should
approach zero as they are progressively removed from the extra-focal image
data.
The menu option Displays ::Show Radial Profile plots a
cross-section of both corrected extra-focal images.
The cross-section ranges from the center of each image to a point
approximately 1.5 times the radius of the image.
You may change the angle of the slice by moving the angle slider.
You may move the angle slider at any time during the calculation, but on slower
machines the program may take some time to respond.
As the calculation proceeds, the profile of each radial slice should
become similar. At the end of the calculation you should expect to
see only some small scale differences due to higher order aberrations.
High order aberrations should cause a positive excursion in one slice,
matched by a negative excursion in the other slice.
The Display :: Display Wavefront menu item is identical
to the File :: Save Wavefront, except that it displays
a wavefront on the screen when invoked.
The Display :: Display Image menu item, is identical
to the File :: Save Image, except that it displays
an image on the screen when invoked.
The Display :: Display Fringes menu item, is identical to
the File :: Save Fringes, except that it displays
an fringe pattern on the screen when invoked.
The Display :: Display buffer menu item, allows one to visualize
the internal data arrays of the program.
You will most likely need this sub-window if you wish to re-display one of
the extra-focal images. Most of the other options will be fairly meaningless
unless you have a thorough understanding of the program.
Laplacian Optics Inc. Email: laplace@laplacian.com