From fd5767a661183c8fd4197accc0e9eef3fb5474bc Mon Sep 17 00:00:00 2001 From: "Kevin M. Rosenberg" Date: Mon, 19 Feb 2001 05:00:09 +0000 Subject: [PATCH] r549: no message --- doc/ctsim-concepts.tex | 18 +++++++++--------- doc/ctsim-gui.tex | 6 +++++- doc/ctsim.tex | 16 +++++++++------- 3 files changed, 23 insertions(+), 17 deletions(-) diff --git a/doc/ctsim-concepts.tex b/doc/ctsim-concepts.tex index 63d478c..27d342a 100644 --- a/doc/ctsim-concepts.tex +++ b/doc/ctsim-concepts.tex @@ -6,7 +6,7 @@ The operation of \ctsim\ begins with the phantom object. A phantom object consists of geometric elements. A scanner is specified and the collection of x-ray data, or projections, is -simulated. That projection data can be reconstructed using various +simulated. This projection data can be reconstructed using various user-controlled algorithms producing an image of the phantom object. These reconstructions can be visually and statistically compared to the original phantom object. @@ -58,7 +58,7 @@ meanings depending on the element type. \subsubsection{ellipse} Ellipses use \texttt{dx} and \texttt{dy} to define the semi-major and -semi-minor axis lengths, with the center of the ellipse at \texttt{(cx,cy)}. +semi-minor axis lengths with the center of the ellipse at \texttt{(cx,cy)}. Of note, the commonly used phantom described by Shepp and Logan\cite{SHEPP74} uses only ellipses. @@ -68,8 +68,8 @@ the center of the rectangle with respect to the origin. \texttt{dx} and \texttt{dy} are the half-width and half-height of the rectangle. \subsubsection{triangle} -Triangles are drawn with the center of the base at \texttt{(cx,cy)}, -with a base half-width of \texttt{dx} and a height of \texttt{dy}. +Triangles are drawn with the center of the base at \texttt{(cx,cy) +and a base half-width of \texttt{dx} and a height of \texttt{dy}. Rotations are then applied about the center of the base. \subsubsection{segment} @@ -108,7 +108,7 @@ construction of the scanner and can not be changed. \ctsim, being a very flexible simulator, gives tremendous options in setting up the geometry for a scan. -In general, the geometry for a scan all starts with the size of +The geometry for a scan starts with the size of the phantom being scanned. This is because \ctsim\ allows for statistical comparisons between the original phantom image and it's reconstructions. Since CT scanners scan a circular area, the @@ -358,10 +358,10 @@ Images can be compared statistically. Three measurements can be calculated by \ctsim. They are taken from the standard measurements used by Herman\cite{HERMAN80}. They are: -\begin{twocollist} -\twocolitem{\textbf{$d$}}{The normalized root mean squared distance measure.} -\twocolitem{\textbf{$r$}}{The normalized mean absolute distance measure.} -\twocolitem{\textbf{$e$}}{The worst case distance measure over a \latexonly{$2\times2$}\latexignore{\emph{2 x 2}} pixel area.} +\begin{itemize}\itemsep=0pt +\item[-]\textbf{$d$}\quad The normalized root mean squared distance measure. +\item[-]\textbf{$r$}\quad The normalized mean absolute distance measure. +\item[-]\textbf{$e$}\quad The worst case distance measure over a \latexonly{$2\times2$}\latexignore{\emph{2 x 2}} pixel area. \end{twocollist} These measurements are defined in equations \ref{dequation} through \ref{bigrequation}. diff --git a/doc/ctsim-gui.tex b/doc/ctsim-gui.tex index f6b7e60..5a11609 100644 --- a/doc/ctsim-gui.tex +++ b/doc/ctsim-gui.tex @@ -17,6 +17,10 @@ any number of files that you want \ctsim\ to automatically open. \ctsim\ can open projection files, image files, phantom files, and plot files. +On Microsoft Windows platforms, the simplest way to invoke \ctsim\ is +via the \emph{Start} menu under the \emph{Programs} sub-menu. + +\section{Quick Start}\label{quickstart}\index{Quick Start} \section{File Types}\index{File types} @@ -28,7 +32,7 @@ ASCII format. A text editor is required to create and edit these files. \subsection{Image} -Image files are 2-dimensional files that store 4-byte floating +Image files contain 2-dimensional arrays that store 4-byte floating point values. Images files can be either real or complex-valued. Typically, all images are real-valued except for images that have been processed by Fourier transforms. As you might expect, diff --git a/doc/ctsim.tex b/doc/ctsim.tex index 5b6286d..0b656ac 100644 --- a/doc/ctsim.tex +++ b/doc/ctsim.tex @@ -53,7 +53,7 @@ \chapter*{Copyright notice}% \setheader{{\it COPYRIGHT}}{}{}{\ctsimheadtitle}{}{{\it COPYRIGHT}}% -\setfooter{\thepage}{}{}{}{\manver}{\thepage}% +\ctsimfooter Copyright (c) 1983-2001 Kevin Rosenberg, M.D. @@ -73,17 +73,19 @@ WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + \chapter*{Acknowledgements} \setheader{{\it COPYRIGHT}}{}{}{\ctsimheadtitle}{}{{\it COPYRIGHT}}% \setfooter{\thepage}{}{}{}{\manver}{\thepage}% \textbf{Ian Kay, Ph.D.}\\ -Dr. Kay has contributed portions to this manual. He has also assisted the -development of \ctsim\ with his bug reports and fixes. +Special thanks to Dr. Kay for contributing portions to this manual. Dr. Kay has assisted the +development of \ctsim\ with bug reports and fixes. \textbf{Gabor T. Herman, Ph.D.}\\ -Dr. Herman's publications on computed tomography provided me with my initial inspiration -to create \ctsim\ back in 1983. Dr. Herman has graciously permitted use of his +Dr. Herman's publications on computed tomography inspired me to +create the initial version \ctsim\ in 1983. Dr. Herman +has graciously permitted use of his copyrighted head phantom for use in \ctsim. @@ -100,8 +102,8 @@ copyrighted head phantom for use in \ctsim. \centerline{\image{3cm;3cm}{logo-huge.eps}} -Computed Tomography is a technique for estimating the interior of an -object from measurement of radiation collected around the object. This +Computed tomography is a technique for estimating the interior of an +object from measurements of radiation collected around the object. This radiation can be either projected through or emitted from the object. \ctsim\ simulates the process of projecting X-rays through a phantom object. \ctsim\ can then reconstruct the -- 2.34.1