-2.5.1 - Released 12/30/00
+3.0.0alpha4
-12/18/00 Added plotfile class
+ * ctsim: Added reset to full-intensity scale menu item
+
+ * ctsim: Add conversion of projections to polar plot [Thanks to
+ Ian Kay for reference and math hints in polar bilinear scaling]
+
+ * ctsim: improve bilinear scaling of image size
+
+ * ctsim: copies imagefile labels to plotfiles
+
+ * ctsim: Added more analyze menuitems
+
+ * ctsim: Fixed initialization of min/max for PlotFiles
+
+ * ezplot: Cleaned up y-tick label placement
+
+ * sgp: Added better support for projection/reconstruction animation
+
+3.0.0alpha3 - Released 1/02/01
+
+ * ctsim: Added plotting of histograms
+
+ * imagefile.cpp: fixed bug in generation of 16-bit PNG images
+
+ * ezplot.cpp: adjusted xtick label displays for better placement
+
+3.0alpha2 - Released 1/02/01
+
+ * ctsim: All functions of command-line tools are now in graphical ctsim
+
+ * ctsim: added generation of filter images
+
+ * ctsim: Added 2-image math functions (mul, add, div, sub)
+
+ * ctsim: Added export of imagefiles to graphic file formats
+
+ * ctsim: Added support for scaling imagefiles in new sizes
+
+ * ctsim: Added ability to save standard phantom definitions as
+ text files suitable for reading.
+
+ * ctsim: Add labels for image transformations and display of labels
+ when performing properties of images.
+
+ * processsignal.cpp: Fixed "off by one" bug in
+ shuffleNaturalToFourierOrder when n is even. Moved functions to
+ fourier.cpp
+
+ * imagefile.cpp: Added FFTW library to imagefile processing. Converted
+ image math functions to complex-valued math.
+
+ * phantom.cpp: Added ability to save phantom files as ASCII text.
+
+3.0alpha1 - Released 12/29/00
+
+ * Added PlotFile class to system, used by if2 and ctsim for row
+ and column plots and comparison plots
+
+ * ctsim: Added image comparison statistics and image subtraction
+
+ * ctsim: Added plotting of rows & columns with y-axis scaling
+
+ * ctsim: Added row and column plot comparisons between two image
+ files.
+
+ * ctsim: Added "Process" menu to image file display with math
+ functions. Added 2-dimensional inverse Fourier to math
+ functions. Added support for complex (real/imaginary) images.
+
+ * mathfuncs.cpp: Reworked statistics algorithm to share between
+ imagefile and plotfile classes.
+
+ * imagefile.cpp: Fixed scaling bug when rasterizing Phantom with
+ nsamples > 2. Added generic mage math functions, moved from
+ if1.cpp and if2.cpp to imagefile.cpp. Added support complex
+ images.
+
+ * array2dfile.cpp: Added code to support complex (real/imaginary)
+ images.
+
+ * if1: Updated to handle error conditions, such as sqrt of a
+ negative number. Converted to use new ImageFile math functions.
+
+ * if2: Updated to output plot files and use new ImageFile class
+ math functions
+
+ * if1: Updated to use new ImageFile class math functions
+
+ * ezplot: Reworked to better store colors/linestyles/symbols with
+ individual curves. Improved display of labels and ticks. Updated
+ to use POL class member variable. Updated to more C++ conventions.
+
+ * pol: converted to C++ class. Extracted HashTable to separate
+ class.
+
+ * sgp: Added linestyle settings
2.5.0 - 12/18/00
First Microsoft Windows GUI version