Matlab code by Se Young Chun for his paper

Se Young Chun, J A Fessler, Yuni K Dewaraja
Correction for collimator-detector response in SPECT
using point spread function template
IEEE-T-MI 32 2 295-305 Feb 2013
https://doi.org/10.1109/TMI.2012.2225441

The original code is gone, but this directory contains pieces
that may be useful for recreating most of the paper's results.

The main code files (functions) are in
sim.psf.simulated/
and
PSFtemplate/

Quasi-Newton optimization code from
https://github.com/stephenbeckr/L-BFGS-B-C
in
lbfgsb/

Some versions in these directories are probably mostly duplicates:
hanvit-version/
sim.psf.measured_hanvit/

But not entirely duplicates;
some key 'make*.m' functions are in hanvit-version/