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[ctsim.git] / doc / ctsim-gui.tex

diff --git a/doc/ctsim-gui.tex b/doc/ctsim-gui.tex
index f906861ece63c99f98055a106788c4dbaebf9643..c97b60ca241a8e22deb42258d97cc7546e5d58c9 100644 (file)
--- a/doc/ctsim-gui.tex
+++ b/doc/ctsim-gui.tex
@@ -15,26 +15,62 @@ ctsim [OPTIONS] [files to open...]
 
 \section{Files Supported}
 \subsection{Phantom}
+Phantom files are supported. Besides loading phantom files from
+the disk, the Herman and Shepp-Logan phantoms are built-in to CTSim.
+Phantom files can be read and stored on the disk. However, a text
+editor is required to create and edit these files.
+ 
 \subsection{Image}
+Image files are 2-dimensional files stored a 4-byte floating point values.
+They are stored in little-endian format and \ctsim\ incorporates routines
+to read and write files correctly on both big and little endian architextures.
+
+Images files can be either real or complex valued. Typically, all images
+are real except for images that have been processed by Fourier transforms.
+
 \subsection{Projection}
+Projection files are created from Phantom files during the projection process.
+Numerous options are available for creation of the these files.
+
 \subsection{Plot}
+Plot files are created by CTSim during analysis of image files. They can be
+read and stored on the disk. They are stored as ASCII files for easy
+cross-platform support.
 
 \section{Phantom Menus}
 
 \subsection{Rasterize Dialog}
+This creates an image file from a phantom. Technically, it converts
+the phantom from a vector (infinite resolution) object into defined resolution
+image. The parameters to set are:
+
+x-size   Number of columns in image file
+y-size   Number of rows in image file
+samples  Numbers of samples taken per pixel in the x and y directions.
+         For example, if the nsamples is set to {\tt 3}, then for every
+         pixel in the image file, 9 samples (3 x 3) are averaged.
+
 \subsection{Projection Dialog}
+This creates a projection file from a phantom.
 
 \section{Image Menus}
+\subsection{File - Properties}
+\subsection{View}
+\subsection{Image}
+These commands create a new image.
+\subsection{Filter}
+These commands filter image.
 
-\section{Projection Menus}
+\subsection{Anaylze}
 
+\section{Projection Menus}
 \subsection{Convert Polar Dialog}
 \subsection{Convert FFT Polar Dialog}
 \subsection{Filtered Backprojection Dialog}
 
 \section{Plot Menus}
-\subsection{File Menu}
-\subsubsection{Save}
+\subsection{File - Properties}
+\subsection{File - Save}
 Plot files can be saved. They are saved in an ASCII text format.
 
 \subsection{View Menu}