tion

[

This program is part of

a rotational symmetric transparent object. The image must have a ver-

tical symmetry axis.

section of the image.

Deconvolution of an axial-symmetrical image by solving the system of

linear equations.

After integration,

surface area of the calculated ring in square pixels divided by 4*

option,

Where the caculation generates a negative result, the output is black.

The computation is unstable against periodic structures with size 2 in

the vertical direction.

You can abbreviate any option to its shortest unique prefix.

Rotate a PGM image to get an image with a vertical axis of symmetry,

then calculate the cross section:

pnmrotate 90 file.pgm | pgmabel -axis 140 >cross_section.pgm

This program was added to Netpbm in Release 10.3 (June 2002).

Volker Schmidt (lefti@voyager.boerde.de)

Copyright (C) 1997-2002 German Aerospace research establishment