2 Improved Integer backprojection method
3 Fixed nearest neighbor to be truly nearest neighbor
4 Made linear interpolation more integer arithmetic -> speed improvement
7 Converted MPI data structures to C++ object
8 Made ImageFile directly inherit from Array2dFile
12 Portable IF (image file) format implemented with objects (SDF removed)
13 - Now all data files are cross-platform compatible
14 Converted from MPI to MPI++
15 Converted backprojection to object-oriented
16 Removed MTX from libkmath as no longer need -- replaced with C++ matrices
19 Simpilifed endian handling
22 Added support for 64-bit (IA64) CPU
23 Removed broken B-spline interpolation
24 Added support for cygwin platform under Windows 2000
25 Added support for 16-bit PNG graphics
28 Added compile-time configuration of endian order
31 Modified the raysum file format to be platform independent
34 Added Microsoft VC compatibility
35 Cleaned up compilation warnings in libgraph
38 Continued conversion to ANSI C
39 Removed old CRT routines
42 Renamed pictures to phantoms, objects to phantom elements
43 Continued code cleanup
46 More code cleanup with reorganizing libraries
47 Added --log and --exp to sdf-1
48 Allowed negative numbers for window levels in CGI interface
51 Continued code cleanup
55 Better documented, coded raysum in-memory on on-disk options
58 Cleaned out library that wasn't being used by CTSim
59 Modified ctsim.cgi to read in configuration file ctsim.conf
62 First open source distribution for GNU/Linux
65 Converted to GNU/Linux
66 added MPI support via LAM library
69 Developed under MS-DOS and IBM EGA graphics