X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=doc%2Fctsim-gui.tex;h=7e0f6d4de0f01ade1dbfc1f9cb53aaad3c0aac72;hp=8d675de29f81518b0ad58ac0b034f220553023bd;hb=befd71a7157339b52a0c40359518d5276b25d127;hpb=d3fa225aa232e132cc198672c4fc148f96a1ab8c diff --git a/doc/ctsim-gui.tex b/doc/ctsim-gui.tex index 8d675de..7e0f6d4 100644 --- a/doc/ctsim-gui.tex +++ b/doc/ctsim-gui.tex @@ -13,17 +13,18 @@ command-line interface \helprefn{\ctsimtext}{ctsimtext} as well as great image processing and visualization features. \ctsim\ can open projection files, image files, phantom files, and -plotfiles. +plot files. -\usage \texttt{ctsim [files to open...] +\usage \texttt{ctsim [files to open...]} You can invoke \ctsim\ by itself on the command line, or include -any number of files that you want \ctsim\ to automatically open. +on the command-line any number of files that you want \ctsim\ to +automatically open. \section{File Types Support} Phantom and plot files are stored as ASCII text. In contrast, -image and projection files are stored in binary format. \ctsim\ +image and projection files are stored in binary format. \ctsim incorporates logic so that binary files are cross-platform compatible between both little and big endian architectures. @@ -41,9 +42,19 @@ processed by Fourier transforms. As you might expect, complex-valued images are twice the size of real-valued images since both a real and imaginary component need to be store. +Images files can also store any number of text labels. \ctsim\ uses +these labels for storing history information regarding +the creation and modifications of images. + +When complex-valued images are viewed on the screen, only the real +component is displayed. + \subsection{Projection} -Projection files are created from Phantom files during the projection process. -Numerous options are available for creation of the these files. +Projection files are created from Phantom files during the +projection process. Numerous options are available for the +creation of the these files. The files are stored in a binary +format with cross-platform compatibility on little and big endian +architectures. \subsection{Plot} Plot files are created by \ctsim\ during analysis of image files. @@ -52,6 +63,14 @@ files for easy cross-platform support. \section{Phantom Menus} +\subsection{Properties} +Displays the properties of a phantom which includes: + +\begin{itemize}\itemsep=0pt +\item Overall dimensions of a phantom +\item A list of all component phantom elements +\end{itemize} + \subsection{Rasterize Dialog} This creates an image file from a phantom. Technically, it converts the phantom from a vector (infinite resolution) object @@ -59,7 +78,7 @@ into a 2-dimension array of floating-point pixels. The parameters to set are: \begin{twocollist} -%\twocolitemruled{\textbf{Parameter}}{\textbf{Options}} +\twocolitemruled{\textbf{Parameter}}{\textbf{Options}} \twocolitem{\texttt{X size}}{Number of columns in image file} \twocolitem{\texttt{Y size}}{Number of rows in image file} \twocolitem{\texttt{Samples per pixel}}{Numbers of samples taken @@ -69,7 +88,50 @@ pixel in the image file 9 samples (3 x 3) are averaged.} \end{twocollist} \subsection{Projection Dialog} -This creates a projection file from a phantom. +This creates a projection file from a phantom. The options +available when collecting projections are: + +\begin{twocollist} +\twocolitem{\textbf{Geometry}}{ + \begin{itemize}\itemsep=0pt + \item Parallel + \item Equiangular + \item Equilinear + \end{itemize}} +\twocolitem{\textbf{Number of detectors}}{Sets the number of +detectors in the detector array.} + +\twocolitem{\textbf{Number of views}}{Sets the number of views +collected} + +\twocolitem{\textbf{Samples per detector}}{Sets the number of +samples collected for each detector} + +\twocolitem{\textbf{View Ratio}}{Sets the field of view as a ratio +of the diameter of the phantom. For normal scanning, a value of +1.0 is fine.} + +\twocolitem{\textbf{Scan Ratio}}{Sets the length of scanning as a +ratio of the view diameter. For normal scanning, a value of 1.0 is +fine.} + +\twocolitem{\textbf{Focal length ratio}}{Sets the distance of the +radiation source and detectors from the center of the object as a +ratio of the radius of the object. + +For parallel geometries, a value of 1.0 is fine. For other +geometries, this should be at least 2.0 to avoid artifacts.} +\end{twocollist} + +\subsection{Advanced Options} +\begin{twocollist} +\twocolitem{\textbf{Rotation Angle}}{Sets the rotation amount as a +multiple of pi. For parallel geometries use a rotation angle of 1 +and for equilinear and equiangular geometries use a rotation angle +of 2. Using any other rotation angle will lead to artifacts.} +\end{twocollist} + + \section{Image Menus} \subsection{File - Properties} @@ -80,21 +142,62 @@ Properties of image files include \item Image file labels \end{itemize} -\subsection{View} +\subsection{File - Export} +This command allows for exporting image files to a standard +graphics file format. This is helpful when you want to take an +image and import it into another application. The current +\helprefn{intensity scale}{intensityscale} is used when exporting +the file. The support file formats are: + +\begin{description}\itemsep=0pt +\item[PNG]Portable Network Graphics format. This uses 8-bits or +256 shades of gray. + +\item[PNG-16]This is a 16-bit version of PNG which allows for +65536 shades of gray. +\item[PGM]Portable Graymap format. This is a common format used on +UNIX systems. +\item[PGM]ASCII version of PGM. +\end{description} + + +\subsection{View}\label{intensityscale} These options are for change the intensity scale for viewing the image. They do not change the image data. +\subsubsection{Set} +\subsubsection{Auto} +\subsubsection{Full} +This resets the intensity scale to the full scale of the image. \subsection{Image} These commands create a new image based upon the current image, and for some commands, also a comparison image. +\subsubsection{Add, Subtract, Multiply, Divide} + +\subsubsection{Image Size} + +\subsubsection{3-D Conversion} +Generates a 3-dimensional view of the current phantom. + \subsection{Filter} -These commands filter image. +These commands filter and modify the image. -\subsection{Anaylze} +\subsubsection{Arithmetic} + +\subsubsection{Frequency Based} + +\subsection{Analyze} These commands are used for analyzing an image. +\subsubsection{Plotting} + +\subsubsection{Image Comparison} + \section{Projection Menus} + +\subsection{File - Properties} + \subsection{Process - Convert Polar Dialog}\label{convertpolardialog} The parameters are \texttt{xsize}, \texttt{ysize}, and \texttt{interpolation}. The \texttt{xsize} and \texttt{ysize} parameters set the size of the @@ -103,10 +206,10 @@ interpolation method. Currently, the \texttt{bilinear} option provides the highest quality interpolation. \subsection{Process - Convert FFT Polar Dialog} -The parameters for this option are the same as -\helprefn{convertpolardialog}{Convert Polar Dialog}. For this -command, though, the projections are Fourier transformed prior to -conversion to polar image. +The parameters for this option are the same as \helprefn{Convert +Polar Dialog}{convertpolardialog}. For this command, though, the +projections are Fourier transformed prior to conversion to polar +image. \subsection{Reconstruct - Filtered Backprojection Dialog} This dialog sets the parameters for reconstructing an image from projections