193 lines
4.9 KiB
TeX
193 lines
4.9 KiB
TeX
\documentclass[14pt]{beamer}
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\usetheme{default}
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\usepackage[L7x,T1]{fontenc}
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\usepackage[lithuanian]{babel}
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\usepackage{graphics}
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\usepackage{biblatex}
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\usepackage{tabularx}
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\definecolor{vulightgrey}{RGB}{220,220,220}
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\definecolor{vupurple}{RGB}{123,0,63}
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\definecolor{darkgreen}{RGB}{32,96,32}
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\setbeamercolor{title}{fg=vupurple}
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\setbeamercolor{frametitle}{fg=vupurple}
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\setbeamercolor{item}{fg=vupurple}
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\setbeamercolor{navigation symbols dimmed}{fg=vulightgrey}
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\setbeamercolor{navigation symbols}{fg=vulightgrey}
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\newcommand{\DP}{Douglas \& Peucker}
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\newcommand{\VW}{Visvalingam--Whyatt}
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\newcommand{\WM}{Wang--M{\"u}ller}
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\mode<presentation>{
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\setbeamertemplate{navigation symbols}{
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\insertslidenavigationsymbol
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\insertframenavigationsymbol
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\hspace{0.2cm}
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\begin{minipage}[c]{0.5cm}
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\vspace{-0.1cm}
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{\strut\insertframenumber{}/\inserttotalframenumber\strut}
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\end{minipage}
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}
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}
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\iffalse
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\setbeamertemplate{footline}[text line]{%
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\parbox{\linewidth}{
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\vspace*{-8pt}\color{gray}
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\textcircled{c}~2016. Uber Technologies Inc. All rights reserved.
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}}
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\fi
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\newcommand{\twocols}[2]
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{
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\begin{columns}[c]
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\begin{column}{0.5\textwidth}
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#1
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\end{column}
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\hspace{0pt} \vrule{}
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\begin{column}{0.5\textwidth}
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#2
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\end{column}
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\end{columns}
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}
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\newcommand{\framedgraphic}[2] {
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\begin{frame}{#1}
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\begin{center}
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\includegraphics[width=\textwidth,height=0.8\textheight,keepaspectratio]{#2}
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\end{center}
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\end{frame}
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}
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\newcommand{\withcredits}[3]
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{
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\begin{minipage}[t][#1\textheight]{\textwidth}
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\vspace{5px}
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#2
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\end{minipage}
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\vfill
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\color{white}{\tiny Šaltinis: #3}
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}
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%% =============================================================================
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\title{
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Kartografinis upių generalizavimas naudojant atvirai prieinamus įrankius
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}
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\author{Motiejus Jakštys \\
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\includegraphics[height=10em]{../../misc/Logo_vilniaus_universitetas}
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}
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\begin{document}
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\AtBeginSection[]
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{
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\begin{frame}
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\frametitle{Turinys}
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\tableofcontents[currentsection]
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\end{frame}
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}
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\begin{frame}
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\titlepage
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\end{frame}
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\section{Problema}
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\begin{frame}{Kas yra kartografinė generalizacija?}
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\begin{itemize}[<+->]
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\item Mažinant mastelį reikia mažinti detalumą.
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\item Detalumo mažinimas yra sudėtinga problema.
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\end{itemize}
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\onslide<+->{Paimkime pavyzdį.}
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\end{frame}
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\begin{frame}{Žeimena ir Lakaja}
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\twocols
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{\includegraphics[width=\textwidth]{zeimena}}
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{\includegraphics[width=\textwidth]{crossing}}
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\end{frame}
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\begin{frame}{Kas yra prieinama?}
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\pause
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\begin{itemize}[<+->]
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\item Atvira ir galima naudoti:
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\begin{itemize}[<+->]
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\item {\DP}
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\item {\VW}
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\end{itemize}
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\item Komerciniame produkte:
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\begin{itemize}[<+->]
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\item {\WM}
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\end{itemize}
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\end{itemize}
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\end{frame}
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\begin{frame}{Pritaikant dabartinius algoritmus}
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\pause
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\begin{tabularx}{\textwidth}{ | X | X | }
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Douglas \& Peucker &
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Visvalingam-Whyatt \tabularnewline \hline
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\onslide<3->{\center
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\includegraphics[width=.75\linewidth]{overlaid-zeimena-douglas-64}} &
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\onslide<3->{\center
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\includegraphics[width=.75\linewidth]{overlaid-zeimena-visvalingam-64}} \tabularnewline \hline
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\onslide<4->{\center
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\includegraphics[width=.75\linewidth]{overlaid-zeimena-douglas-256}} &
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\onslide<4->{\center
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\includegraphics[width=.75\linewidth]{overlaid-zeimena-visvalingam-256}} \tabularnewline \hline
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\end{tabularx}
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\end{frame}
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\begin{frame}{Problemos}
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Ne taip, kaip kartografai generalizuotų:
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\pause
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\begin{itemize}[<+->]
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\item Daug "kampų" ir "dantų".
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\item Nedideli vingiai visiškai dingsta.
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\item Upės beveik niekada nebūna tiesios.
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\end{itemize}
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\end{frame}
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\section{Pasiūlymas}
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\begin{frame}{Algoritmas}
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\begin{center}
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\fbox{
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\includegraphics[width=\textwidth]{images/wang1998line.png}
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}
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\end{center}
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\end{frame}
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\begin{frame}{Pagrindiniai privalumai}
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Sukurtas pagal tai, kaip kartografai generalizuotų:
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\pause
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\begin{itemize}[<+->]
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\item Nesukuriami "kampai" ir "dantys".
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\item Nedideli vingiai "prastinami" į vieną didesnį.
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\item Nesukuria tiesių upių.
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\end{itemize}
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\end{frame}
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\begin{frame}{Technologijos}
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\begin{itemize}[<+->]
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\item {\texttt qgis.core}
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\item PostGIS 3.x
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\end{itemize}
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\end{frame}
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\section{Darbo eiga}
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\begin{frame}{Darbo eiga}
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\begin{itemize}[<+->]
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\item Parašyti algoritmą.
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\item Aprašyti rezultatus.
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\end{itemize}
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\end{frame}
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\end{document}
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