-0.5.2 - May 11, 2000
-Numerous bug fixes
-Added Microsoft Windows compatibility
+Version 2.5 of CTSim has been released!
-0.5.0 - April 27, 2000
-This is the first open source release
+New Features of CTSim version 2.5:
+
+- Now compiles with Microsoft Visual C++.
+
+- First Microsoft Windows graphical user interface
+
+- Bug fixes and modest documentation and program improvements over version 2.0
+
+
+
+New Features of CTSim version 2.0:
+
+- Entire code-base cleaned up, re-written, and converted from C to C++.
+
+- Graphical user interface now included! Animation of projection and
+ reconstruction processes. Displays projection and image files. Uses
+ platform-independent wxWindows library so can run on UNIX and
+ Microsoft Windows platforms.
+
+- Integrated G2 library for graphical display from command line tools
+ (UNIX only)
+
+- Added frequency-based filtering. Can provide significant speed-up
+ in reconstructions compared to convolution-based filtering.
+
+- Added highly-optimized backprojection method (idiff3)
+
+- New command-line tools added for image statistics and comparisons with
+ both text and graphical outputs.