% ================================================================
% Use the following if all authors are from the SAME institution
% ================================================================
\documentclass[accepted,single]{gipaper}

% use Times fonts 
\usepackage{times}
% make sure English hyphenation rules, etc. loaded
\usepackage[english]{babel}
% permits inclusion of PNG, JPG, and PDF files under pdflatex
\usepackage{graphics}
% a more flexible replacement for "verbatim" for typesetting pseudocode
\usepackage{alltt}
% gives automatic table of contents, permits setting PDF 
% attributes of document.   Set page size in pdftex.cfg file;
% the "letterpaper" option to hyperref is unreliable...
\usepackage[
    pdftitle = "{Graphics Interface Instructions to Author}",
    pdfauthor = "{Michael D. McCool}"
]{hyperref}

\title{Graphics Interface \\ Instructions To Authors}

\newauthor{mm}{Michael D. McCool}{}
% Can add more authors
%\newauthor{se}{Someone Else}{}
%\newauthor{ya}{Yet Another}{}
%\newauthor{fa}{Fourth Author}{}

% Common affiliation
\affiliation{
    School of Computer Science \\ 
    University of Waterloo
}

% ================================================================
% Use the following if the authors are from MULTIPLE institutions
% ================================================================
% 
% \documentclass[accepted,oneeach]{gipaper}
% \usepackage{graphics}
% \usepackage{hyperref}
%
% \title{Graphics Interface \\ Instructions To Authors}
% 
% \newauthor{wd}{Author One}{Department of Computing Science\\ University of Nowhere}
% \newauthor{se}{Someone Else}{Another Department\\ A Company}
% \newauthor{ya}{Yet Another}{Yet Another Department\\ Another University}
% \newauthor{fa}{Fourth Author}{Department of Computing Science\\ University of Nowhere}
% 
% ================================================================
% The rest of the document follows.
% ================================================================

\abstract{
Review submissions should follow the format described here
as closely as possible.  A PDF file is required for review, but
no hardcopies. 

For accepted papers,
by the final submission deadline 
PDF versions of accepted papers
must have been uploaded and 
a signed release form and a cheque covering any charges must have been
physically received by the proceedings editor.
A physical camera-ready hardcopy and a reference hardcopy with page
numbers will also be required and should be included with the 
release form. 
However, the camera-ready hardcopy will be used for printing only 
in unusual circumstances.
There will be no extensions, since we have a tight printing
schedule.  Please note the special rules for colour, specifically
that colour may only be printed on one side of each physical sheet.
Papers should be formatted as in this example.   Page sizes and margins
must be respected.
}

\begin{document}
\begin{keywords}
Author instructions, layout, paper formatting, electronic submissions.
\end{keywords}

\section{General Comments}
The paper must be in English with an English abstract.   A French
abstract (r\'esum\'e) is optional.  Any translation of the abstract must
be provided by the authors.

The nominal length of papers is eight pages.  

\section{Review Submissions}
Papers submitted for review should follow the formatting conventions
described in this document as closely as possible.   
This can be most easily accomplished by using the style files 
provided for Word or \LaTeX in this author's kit.   
Strict adherence to the rules for
colour are not necessary for the review version of your paper, 
but please
respect the margins, spacing, and point size so that we may 
accurately assess the printed length of your paper.   You also
may want to make some modifications to make it easier for the 
reviewers.  For instance, you might want to 
number \emph{all} equations to make them
easier to refer to.

A PDF file is \emph{required},
uploaded via the GI website.
Please take care to ensure that your PDF file is as portable as
possible.   PDF generated directly by pdflatex or by
Word via Adobe's distiller is acceptable (see the appropriate
sections later on using how to use one of these tools 
to generate portable PDF).

No hardcopies are required for review, and images in
review papers should have image setttings suitable for online
viewing, for instance, use of the RGB colour space. 
Review submissions should not use JPEG compression (if
using distiller, turn off lossy image compression) and 
should have at least 100 dpi image resolution, but
higher resolution is acceptable and in fact encouraged.

Paper manuscripts submitted for review should be anonymous.
Identification information will be collected on the upload
page and will be tracked separately.   Do not
use your name or names in the headers or title. 
Avoid using any images characteristic of your lab.
Do not refer to your own work as ``yours'' or ``the authors'''.
Use third person in all references.

Although you do not have to submit a copyright clearance form
for review, it is expected that you will do so for the final
version of the paper without substantially changing the content
of your paper, so please ensure that you do have publication
rights to the content of your review submission.   
One author of every accepted paper must also
register for and attend the conference.

\section{Final Submission}
Final submission of accepted papers to appear in the 
proceedings must be in the
form of PDF files and will be printed directly from submitted files.   
Submission of two hardcopies is also required: a camera-ready
hardcopy with colour pictures and no page numbers, 
and a reference hardcopy with page numbers written in, for which
colour is optional. 
The camera-ready hardcopy will be used for colour reference, 
but will only be scanned for printing in unusual circumstances.   

Papers submitted electronically will be
added the GI web site at
\href{http://www.graphicsinterface.org/}{\texttt{www.graphicsinterface.org}}, 
and may appear in the future in digital libraries and CD-ROM collections.
An optional second PDF file may be submitted for online use
(for example, using RGB colours rather than CMYK colours, if
CMYK colours were used in the version submitted for printing, or with
an alternative colour scheme).

A copyright clearance form and payment of any page charges will
also be expected with the final submission.

\section{Page Charges}
Papers without colour taking up eight pages or less will be 
printed without charge.
There will a \$200 charge for each \emph{pair} of pages in excess of eight.   
There is also a charge for colour.  
To add colour to a page requires \$50 for the first page 
printed in colour, and \$150 for each page after that.   
Colour may only be printed on one side of each physical sheet. 
The first page of each paper will be odd, and will appear on the 
right-hand side of the open proceedings.   Therefore, each physical sheet
will be printed with an odd-even pair of pages.   

\section{Page Formatting}
GI papers must be formatted using the following guidelines.
Note that the provided \LaTeX\ and Word style files cover most of
these points, and this paper is an example of a correctly formatted
GI paper using the provided \LaTeX\ style file.

The body of the paper should use a Times-Roman 10--point font with a vertical
spacing of 12 points.    
The text must appear in {\em two columns} and
should be correctly hyphenated and right--justified. 
The margin settings 
in Table~\ref{tab1} are
required, using 8.5 inch by 11 inch paper.   

Please note: 
\begin{itemize}
\item The paper size \emph{must} be 8.5 by 11 inches, or U.S. letter.  
Please verify your paper size in Acrobat
before submitting the paper.    Notes later in this document describe
how to set and correct paper sizes using pdflatex and distiller.
\item 
The formatting of GI papers is NOT the same as SIGGRAPH papers.   
Please do
NOT use the SIGGRAPH style files. 
Your margins will be in the wrong
places and we will not be able to add our headers and footers.
\end{itemize}

\begin{table}[th]
\begin{center}
\begin{tabular}{ lrlr }
Measurement & mm & inches & pts \\
\hline
Paper width     & 215.9 & 8.5    & 612 \\
Paper height    & 279.4 & 11    & 792 \\
\hline
Left margin     & 25 & 1      & 72 \\
Right margin    & 25 & 1      & 72 \\
Top margin      & 25 & 1      & 72 \\
Bottom margin   & 30 & 1.25   & 90 \\
\hline
Column width    & 80 & 3.125  & 225 \\
Between columns &  5 & 0.25   & 18 \\
\hline
\end{tabular}
\end{center}
\caption{Paper size and margin settings.}
\label{tab1}
\end{table}

% Note that many printers do not register exactly.  Please measure your
% margins from each edge of the paper!  Horizontal or vertical
% misalignment can usually be fixed by fine tuning the margin settings.
No text or figure should extend beyond the margins: it may be cut off
in the printing, or overprinted with headers and footers.   
Papers should not include page numbers.   Page numbers as well as
appropriate headers and footers will be added by the proceedings editor.

On the \emph{back} of each page of the final camera-ready hardcopy please
mark the paper number and page number (starting at one at the 
start of the paper) in light pencil (blue pencil if possible).
Mark the page numbers on the front of the reference hardcopy.

\subsection{First Page}
The title should be centered with a baseline 38~mm (1.5~inches or
108~points) below the top edge of the paper and should be in bold
14--point mixed capitals {\em and\/} lower case.   
A bold Times font should be used.
If more than one line is required, use 18--point spacing for the title.  

\subsubsection{Authors}
The authors' names and affiliations should be 10--point, single spaced,
centered, should not extend outside the left and right margins,
and should use both upper and lower case letters.  Multiple author
names should be placed side by side in multiple columns if space
permits; otherwise, they may be placed on a single line, one after the
other.  Multiple affiliations can also be placed side by side in
multiple columns underneath the authors, if each author has a separate
affiliation.  Otherwise they can be identified by corresponding
superscripts in italics ($^a$, $^b$, $^c$, etc.).

Note: author's names should be omitted from review submissions.

\subsubsection{Abstract}
The abstract (100 to 200 words) should be headed by the word
``Abstract'' in 10-point italics, centered over the left column, 90 mm (3.5
inches or 252 points) from the top edge of the paper.  The body of the
abstract should be in the left column of the two-column format, single
spaced, with care being taken to remain within the column margins. 
It should be printed in the same font as the body text.  If
the abstract is provided in both English and French (and we encourage you 
to do so, if you can provide a good French abstract), 
the two versions should appear one below the other.  The word
``R\'esum\'e'' should be printed in 10-point italics above the
French abstract.  A line
starting with ``Key words:'' in 10-point italics and listing a few well-chosen
key words, also in italics, should appear below the abstract(s).

\subsubsection{Text}
The text of the paper should immediately follow the ``Key words'', and
should be typeset using 10-point type.
All headings should be in 10--point boldface Times, using both capitals and
lower case, and should be left-justified in their columns.  Sections
are numbered 1, 2, 3, etc; subsections are numbered 4.1, 4.2, 4.3,
etc; sub--subsections are not numbered, but the sub--subsection
heading is still 10--point boldface.

\subsection{Second and Subsequent Pages}
These pages should be typeset in two-column format, single spaced,
with care being taken to remain within the margins.

\section{Equations}
Displayed equations should be numbered only if they are 
referenced (in the final printing; for the review copy, number
everything if you can).   For instance, this equation is not referenced
again:
\begin{eqnarray*}
	f(x) &=& \cos(x).
\end{eqnarray*}
These two, however, 
\begin{eqnarray}
	g(x) &=& \sin(x),    \label{eq1}
	\\
	h(x) &=& f(x) g(x),  \label{eq2}
\end{eqnarray}
are referred to as Equation~\ref{eq1} and Equation~\ref{eq2}.

Equations should be punctuated as if they were phrases, with
commas between multiple equations.
However, the only verb in a sentence should not be the
``$=$'' sign in an equation.   Do not begin a sentence
with a numeral or a mathematical symbol.   Don't say ``$E=mc^2$ 
is an interesting equation''; say instead ``The equation $E=mc^2$
is interesting''.

\section{Figures}
\begin{figure}[th]
% The "!" means to maintain the aspect ratio.   
\resizebox{\columnwidth}{!}{\includegraphics{fig1a.png}}%
\caption{
	This is an example of how to include an RGB image stored in a 
    PNG file.   
    RGB images should represented relative to the 
    sRGB colour space.
}
\label{fig1a}
\end{figure}

\begin{figure}[th]
% The "!" means to maintain the aspect ratio.   
\resizebox{\columnwidth}{!}{\includegraphics{fig1a.pdf}}%
\caption{
    Here we have converted the RGB image in Figure~\ref{fig1a} to
    PDF using Photoshop, specifying the sRGB colour space.
    Compare this with Figure~\ref{fig1c}.
}
\label{fig1b}
\end{figure}

\begin{figure}[th]
% The "!" means to maintain the aspect ratio.   Note: file suffix is optional
\resizebox{\columnwidth}{!}{\includegraphics{fig1b}}%
\caption{
	This is an example of how to include a CMYK image stored in  
	a PDF file.   In this case, Photoshop~6.0 was used to
    convert the PNG file in Figure~\ref{fig1a} using the sRGB source
    colour space, the Kodak SWOP Proofer CMYK 
    Uncoated Stock destination ICC profile (in \texttt{SWUL28M.icm}),
    a dot gain of 20\%, black point compensation, the
    relative colourimetric intent, and the Microsoft
    colour conversion engine.  Note that the conversion has not been optimized
    to display the same as the original in Acrobat Reader, but to
    \emph{print} as close to the original as possible. 
}
\label{fig1c}
\end{figure}

\begin{figure}[th]
% The "!" means to maintain the aspect ratio.   Note: file suffix is optional
\resizebox{\columnwidth}{!}{\includegraphics{fig2}}
\caption{\sl
	This is an example of how to include a vector graphics
    image stored in a PDF file.   Convert EPS images to 
    PDF if you are using \texttt{pdflatex}.
}
\label{fig2}
\end{figure}
Figures should be typeset in the body of the text with appropriate
captions.   
Refer to figures using the terminology Figure~\ref{fig1a}, 
Figure~\ref{fig1b},
Figure~\ref{fig1c}, etc.    For subfigures, use Figure~1a, Figure~1b, etc.
Tables may also be included, should be numbered separately, and
referenced as with Table~\ref{tab1}.   
The contents of tables should be centered.

Captions to figures and tables should be set in a 10-point slanted or italic
Times font to distinguish them from the main body text.   Captions should
start with the word ``Figure'' or ``Table'' and the number as shown in 
the examples.

Figures can span either a single column or two columns.   If they
span two columns, they should under no conditions extend
beyond the outer margins, or appear above the title/author block.   
Also, all other conventions for
captions and numbering should be followed.

\section{Bibliography and Citations}
The bibliography should be headed by the word ``References'',
left-justified, in 10--point boldface Times.   
References should be ordered alphabetically by first author.
The reference section should not be numbered.

Refer to citations using a square-bracketed numeral \cite{author1995a}.
Multiple citations should be referenced with a comma-separated
list inside brackets \cite{author1995b,author1995a}.   Try to list
such citations in numerical order.   Citations are not nouns! 
They should be treated grammatically as parenthetical statements.
Say ``Consider the work of Some Author and Her Cat \cite{author1995a}'',
not ``Consider the work of \cite{author1995a}''.   Do not start
a sentence with a citation.

\section{Colour}
Colour pictures should be included in your paper if you feel that colour
adds to the information being conveyed.   
Colour figures
ideally should be concentrated on as few pages as possible in order to
reduce the cost of colour reproduction---author charges do \emph{not}
fully recover the cost of colour printing.
Colour images can
only be printed on one side of each physical sheet of paper in
the proceedings, where a physical sheet consists of an odd-numbered
page and the following even-numbered page.   Every paper will begin
on an odd page.
Colour printing must be
specifically requested and paid for.   Colour images on pages
not identified for colour printing
will be printed in greyscale, but of course will show up in colour in
the electronic version of your paper presented on the web site.

Your colour pictures will be automatically
considered for the front and back covers of the Proceedings.
If you don't wish to have your pictures
considered, please indicate this on the release form.   
Colour images may also be emailed in attachments directly to the proceedings 
editor at 
\begin{flushleft}
\href{mailto:mmccool@cgl.uwaterloo.ca}{\texttt{mmccool@cgl.uwaterloo.ca}}.
\end{flushleft}
You must, of course, have the copyright to any images that appear
in your papers or that you submit for the cover.   
The cover design also uses vector graphics and code; \emph{please}
submit these as well, the former as EPS or PDF files and the latter 
as raw text.

\section{Electronic Version of Paper}
Instructions for electronic submission can be found on the GI web site.  
Electronic submission of your paper as a PDF file is \emph{required}.    

To submit
an electronic version of your paper through the GI web site, 
you will need to know your paper number and password,
which you received when you first submitted your paper.

If your PDF file for printing is significantly different from the
version you want to present for online viewing (for instance, you
used the CMYK colour space for images in the version to be printed, or
want greyscale on certain pages for printing and colour for online),
then submit a separate file for the web archive.   However, aim for
quality, not small size.   We can generate a version with subsampled
images, etc.\ if necessary, but would like to archive a high-quality version.
See the submission web page for details.

\subsection{Style Files and PDF Conversion}
A \LaTeX2$\epsilon$\ document class, \texttt{gipaper.cls} and an
example input file, \texttt{giformat.tex}, 
conforming to these specifications are provided in the author's
kit available on the conference Web site.
The example file, which is in fact the source for this document, 
is set up to use \texttt{pdflatex}.
Please consider using \texttt{pdflatex} to process your files and
produce PDF directly.   The results are generally superior to conversion from
DVI to PDF, although this will also work.   
Information on \texttt{pdflatex} can be found at
\href{http://www.tug.org}{\texttt{www.tug.org}}.

See the comments in the example file on
how to set up \texttt{pdflatex} appropriately.   
In particular, you may have to
modify your \texttt{pdftex.cfg} configuration file to get the correct 
PDF paper size; it should look something like Figure~\ref{figp}.    
A \texttt{pdftex.cfg} file is included with this package but will need
to be modified for your installation to access your fonts
(just compare it with your
existing configuration file).
You should also make sure \texttt{pdflatex} is configured to use
English hyphenation rules, as some distributions do not use this
as the default.   This can be accomplished with the \texttt{babel}
package, again as shown in the example file.
\begin{figure}[th]
\begin{alltt}
\textsl{% example pdftex configuration file}
output_format 1
compress_level 9
decimal_digits 3
\textsl{% Get these right!}
page_width 8.5in
page_height 11in
horigin 1in
vorigin 1in
\textsl{% Your map file is probably different}
map pdftex.map
\end{alltt}
\caption{\sl
    What your \texttt{pdftex.cfg} file should look like to get the right
    page size.   There are other ways to change the PDF paper size, but this
    is the most reliable.
}
\label{figp}
\end{figure}

To use \texttt{pdflatex}
you will also have to convert all images to PDF, PNG, or
JPEG.  JPEG is not recommended, however, as it uses lossy compression; if
you \emph{must} use it, use a quality setting as high as possible.
NEVER use JPEG compression for screen shots including text.

Adobe distiller (or illustrator)
can be used to convert EPS files to PDF if
you want to include an EPS diagram in a paper via \texttt{pdflatex}.   
You can also use the free program \texttt{ghostview} for this purpose.  
The \texttt{pdflatex} distribution in particular 
includes a script to convert EPS
files to PDF based on \texttt{ghostview}.

Note that there is an incompatibility between PDF files generated by
earlier versions of \texttt{pdflatex} and Acrobat 5.0; 
namely, some files may display
but not print.   We will accept these files, and will fix them for
presentation on our website, but if you want to fix them yourselves,
either (a) get the latest version of \texttt{pdflatex} which includes
a workaround for the Acrobat 5.0 bug involved or (b) from Acrobat 4.0.5,
print to distiller.   The resulting file will print under Acrobat 5.0
but will have lost all bookmarks, etc.   Distiller and acrobat can also
be used this way to fix page size problems: print to distiller with 
a large page size, NOT using fit-to-page, then crop to the right size
and positioning in Acrobat (a horrible hack, we know).   A much better
(and cheaper) solution to both these problems is to get the latest
distribution of \texttt{pdflatex} and set it up correctly.   If you
do use ``print to distiller'' to massage your PDF files, make sure
you use the correct ``Press'' settings described below to avoid
degrading your images.

A Microsoft Word template is also available,
\texttt{template.doc}.   Due to difficulties we
have had in the past with font embedding and version compatibility in Word, 
we will \emph{not} be accepting Word documents directly.   
You must convert your files to PDF by printing to the
Abode distiller printer driver.   You have to do this on the same
computer as the Word installation to pick up, convert,
and embed the necessary TrueType fonts.
Printing a PostScript file on one machine and converting on another
will generally not work unless both machines have exactly the same
TrueType font installation.

If you use Adobe distiller to convert files from Word or any other
word processor to PDF, please use the ``Press'' settings: image resolution
of 300dpi or better, no JPEG compression (ZIP compression is OK and in
fact desirable, though), and full embedding of fonts.   Do \emph{not} use
PDFWriter: it cannot correctly capture the TrueType math font used in Word.

Test your PDF file on a machine different from the one you used to
generate it, ideally on one with a different operating system,
to make sure all fonts have been embedded correctly.
Make sure your file is both viewable under the Acrobat reader and prints
correctly.  Watch out in particular for missing symbols and diagrams that
print incorrectly.

\subsection{Optimizing Print Quality}
The printer used to print the proceedings is an offset press that
uses metal plates generated by an imagesetter with
a resolution of 2540dpi.   Colour is printed using CMYK process colour 
using four separate passes.  We will be printing on uncoated paper.

This printing technology has certain implications that you should take
into account when preparing your files.
First of all, the resolution is \emph{VERY HIGH}.   After halftoning, images
will have a TRUE resolution of 300dpi, with approximately 200 shades
of grey.   You should take advantage of this by submitting high-resolution
images: an image that is the width of a column
should be approximately 900 pixels wide.   If the resolution is lower,
it may appear pixellated.   You can put screen shot images
in a single column and it is possible to see every single pixel.   On the
other hand, JPEG compression artifacts will be very noticeable, 
\emph{especially} with screen shots.  

Make sure
that JPEG compression is \emph{not} used when you create your PDF file, and
also make sure that your images are \emph{not} subsampled by distiller to
72dpi (which is the default behaviour).  Images should originate at
300dpi and be maintained at this resolution or higher.

Colour images are printed using process colour, which requires
conversion to a CMYK colour space.   It is not mandatory, but you can
do this conversion yourself.   This will save the proceedings editor
some trouble and will give you more control over issues like gamut 
mapping.   
There are other advantages: if you want to put text labels on top
of your images, it is best if you convert to CMYK and \emph{then} put the text
labels in only the K channel.   
This will keep the edge of the labels crisp.
Conversion to CMYK can be done using
Photoshop---see the caption of Figure~\ref{fig1b} for appropriate settings for 
Photoshop~6.0.   RGB and CMYK images can be mixed in the same PDF
file.   However, CMYK images may not be rendered correctly (the same
way they will print) in Acrobat Reader so you may want to submit a
version with RGB images for the website.
If you submit documents with RGB images, 
we will assume the sRGB
image space (see \href{http://www.srgb.com}{\texttt{www.srgb.com}}) for
the purposes of conversion to CMYK.   

Unfortunately, one of the drawbacks of offset press technology is that 
colour consistency is hard to control.
In particular, no ICC profile is available for the press, since ink
density and plate pressure are manually adjusted.    We will assume
the Kodak SWOP Proofer CMYK Uncoated stock ICC profile as a target for
our conversions.
The printers will then adjust the press by eye
to match the colours in your submitted hardcopy, so submit a colour
hardcopy that has colours you are happy with.

For text, the high resolution means that resolution-independent vector
fonts should be used.   Use the Times font as specified, and avoid the
use of resolution-dependent DVI files if you are using \LaTeX.  
Fortunately,
\texttt{pdflatex} converts the Computer-Modern math fonts to a 
resolution-independent vector form.

For line drawings, make sure that your lines are wide enough.  A hairline,
or the finest line the imager can generate, won't show up during printing due
to various nonlinear effects in the printing process.
Make all lines at least 0.5pt wide or wider, \emph{after} scaling.    
If you want to
halftone lines in graphs to distinguish them by greyscale, make them
at least 3pts wide.

% \section{Charges}
% Charges for colour pages are in addition to charges for pages in
% excess of the eight page limit.  All charges must be paid before the
% paper will be published in the Proceedings.  See the enclosed release
% form.
%
% An 8-page paper without colour will be printed free of charge.
% Every additional \emph{pair} of pages beyond 8 will cost \$200,
% so both a 9-page paper and a 10-page paper will be charged
% \$200, an 11-page and a 12-page paper will cost \$400, and so forth.
% 
% In addition to the charges for additional pages,
% there will be a \$50 charge for the first colour page, 
% and \$150 for every following
% colour page.   Note again that colour can only be printed on
% one side of each physical sheet.

\acknowledgements{Note there is no
section number on the acknowledgement section header
or on the header for the references.}

% To add people to the references without citing them in body
%\nocite{author1995a,author1995b}

\bibliography{refs}

\end{document}
