Add a few DP, VW and Chaikins
This commit is contained in:
Motiejus Jakštys
parent
6bc3f74dc9
commit
c45e4f90e5
89
Makefile
89
Makefile
@ -35,12 +35,12 @@ RIVERS = \
|
||||
salvis-50k \
|
||||
salvis-250k-10x \
|
||||
salvis-gdr250-2x \
|
||||
salvis-douglas-64-50k \
|
||||
salvis-visvalingam-64-50k \
|
||||
salvis-douglas-64-chaikin-50k \
|
||||
salvis-visvalingam-64-chaikin-50k \
|
||||
salvis-overlaid-douglas-64-chaikin-50k \
|
||||
salvis-overlaid-visvalingam-64-chaikin-50k \
|
||||
salvis-dp-64-50k \
|
||||
salvis-vw-64-50k \
|
||||
salvis-dp-64-chaikin-50k \
|
||||
salvis-vw-64-chaikin-50k \
|
||||
salvis-overlaid-dp-64-chaikin-50k \
|
||||
salvis-overlaid-vw-64-chaikin-50k \
|
||||
salvis-wm-250k-10x \
|
||||
salvis-wm-250k-2x \
|
||||
salvis-wm-50k \
|
||||
@ -49,7 +49,11 @@ RIVERS = \
|
||||
salvis-wm-overlaid-250k-zoom \
|
||||
salvis-wm-gdr50 \
|
||||
salvis-wm-gdr50-ne \
|
||||
salvis-wm-220
|
||||
salvis-wm-220 \
|
||||
salvis-wm-dp-50k \
|
||||
salvis-wm-dp-chaikin-50k \
|
||||
salvis-wm-vw-50k \
|
||||
salvis-wm-vw-chaikin-50k
|
||||
|
||||
#################################
|
||||
# The thesis, publishable version
|
||||
@ -183,29 +187,29 @@ salvis-250k-10x_WIDTHDIV = 10
|
||||
salvis-gdr250-2x_1SELECT = wm_visuals where name='salvis-gdr250'
|
||||
salvis-gdr250-2x_WIDTHDIV = 2
|
||||
|
||||
salvis-douglas-64-50k_1SELECT = wm_visuals where name='salvis-douglas-64'
|
||||
salvis-douglas-64-50k_WIDTHDIV = 2
|
||||
salvis-dp-64-50k_1SELECT = wm_visuals where name='salvis-dp-64'
|
||||
salvis-dp-64-50k_WIDTHDIV = 2
|
||||
|
||||
salvis-visvalingam-64-50k_1SELECT = wm_visuals where name='salvis-visvalingam-64'
|
||||
salvis-visvalingam-64-50k_WIDTHDIV = 2
|
||||
salvis-vw-64-50k_1SELECT = wm_visuals where name='salvis-vw-64'
|
||||
salvis-vw-64-50k_WIDTHDIV = 2
|
||||
|
||||
salvis-douglas-64-chaikin-50k_2SELECT = wm_visuals where name='salvis-douglas-64-chaikin'
|
||||
salvis-douglas-64-chaikin-50k_WIDTHDIV = 2
|
||||
salvis-dp-64-chaikin-50k_2SELECT = wm_visuals where name='salvis-dp-64-chaikin'
|
||||
salvis-dp-64-chaikin-50k_WIDTHDIV = 2
|
||||
|
||||
salvis-visvalingam-64-chaikin-50k_2SELECT = wm_visuals where name='salvis-visvalingam-64-chaikin'
|
||||
salvis-visvalingam-64-chaikin-50k_WIDTHDIV = 2
|
||||
salvis-vw-64-chaikin-50k_2SELECT = wm_visuals where name='salvis-vw-64-chaikin'
|
||||
salvis-vw-64-chaikin-50k_WIDTHDIV = 2
|
||||
|
||||
salvis-overlaid-douglas-64-chaikin-50k_1SELECT = wm_visuals where name='salvis-douglas-64-chaikin'
|
||||
salvis-overlaid-douglas-64-chaikin-50k_2SELECT = wm_visuals where name='salvis'
|
||||
salvis-overlaid-douglas-64-chaikin-50k_1COLOR = orange
|
||||
salvis-overlaid-douglas-64-chaikin-50k_WIDTHDIV = 2
|
||||
salvis-overlaid-douglas-64-chaikin-50k_QUADRANT = 1
|
||||
salvis-overlaid-dp-64-chaikin-50k_1SELECT = wm_visuals where name='salvis-dp-64-chaikin'
|
||||
salvis-overlaid-dp-64-chaikin-50k_2SELECT = wm_visuals where name='salvis'
|
||||
salvis-overlaid-dp-64-chaikin-50k_1COLOR = orange
|
||||
salvis-overlaid-dp-64-chaikin-50k_WIDTHDIV = 2
|
||||
salvis-overlaid-dp-64-chaikin-50k_QUADRANT = 1
|
||||
|
||||
salvis-overlaid-visvalingam-64-chaikin-50k_1SELECT = wm_visuals where name='salvis-visvalingam-64-chaikin'
|
||||
salvis-overlaid-visvalingam-64-chaikin-50k_2SELECT = wm_visuals where name='salvis'
|
||||
salvis-overlaid-visvalingam-64-chaikin-50k_1COLOR = orange
|
||||
salvis-overlaid-visvalingam-64-chaikin-50k_WIDTHDIV = 2
|
||||
salvis-overlaid-visvalingam-64-chaikin-50k_QUADRANT = 1
|
||||
salvis-overlaid-vw-64-chaikin-50k_1SELECT = wm_visuals where name='salvis-vw-64-chaikin'
|
||||
salvis-overlaid-vw-64-chaikin-50k_2SELECT = wm_visuals where name='salvis'
|
||||
salvis-overlaid-vw-64-chaikin-50k_1COLOR = orange
|
||||
salvis-overlaid-vw-64-chaikin-50k_WIDTHDIV = 2
|
||||
salvis-overlaid-vw-64-chaikin-50k_QUADRANT = 1
|
||||
|
||||
salvis-wm-250k-2x_1SELECT = wm_visuals where name='salvis-wm-220'
|
||||
salvis-wm-250k-2x_WIDTHDIV = 2
|
||||
@ -236,17 +240,52 @@ salvis-wm-gdr50_2SELECT = wm_visuals where name='salvis-gdr50'
|
||||
salvis-wm-gdr50_3SELECT = wm_visuals where name='salvis'
|
||||
salvis-wm-gdr50_1COLOR = orange
|
||||
salvis-wm-gdr50_2COLOR = green
|
||||
salvis-wm-gdr50_3LINESTYLE = dotted
|
||||
|
||||
salvis-wm-gdr50-ne_1SELECT = wm_visuals where name='salvis-wm-75'
|
||||
salvis-wm-gdr50-ne_2SELECT = wm_visuals where name='salvis-gdr50'
|
||||
salvis-wm-gdr50-ne_3SELECT = wm_visuals where name='salvis'
|
||||
salvis-wm-gdr50-ne_1COLOR = orange
|
||||
salvis-wm-gdr50-ne_2COLOR = green
|
||||
salvis-wm-gdr50-ne_3LINESTYLE = dotted
|
||||
salvis-wm-gdr50-ne_QUADRANT = 1
|
||||
|
||||
salvis-wm-220_1SELECT = wm_visuals where name='salvis-wm-220'
|
||||
salvis-wm-220_WIDTHDIV = 2
|
||||
|
||||
salvis-wm-dp-50k_1SELECT = wm_visuals where name='salvis-dp-64'
|
||||
salvis-wm-dp-50k_2SELECT = wm_visuals where name='salvis-wm-75'
|
||||
salvis-wm-dp-50k_3SELECT = wm_visuals where name='salvis'
|
||||
salvis-wm-dp-50k_1COLOR = green
|
||||
salvis-wm-dp-50k_2COLOR = orange
|
||||
salvis-wm-dp-50k_3LINESTYLE = dotted
|
||||
|
||||
salvis-wm-dp-chaikin-50k_1SELECT = wm_visuals where name='salvis-dp-64-chaikin'
|
||||
salvis-wm-dp-chaikin-50k_2SELECT = wm_visuals where name='salvis-wm-75'
|
||||
salvis-wm-dp-chaikin-50k_3SELECT = wm_visuals where name='salvis'
|
||||
salvis-wm-dp-chaikin-50k_1COLOR = green
|
||||
salvis-wm-dp-chaikin-50k_2COLOR = orange
|
||||
salvis-wm-dp-chaikin-50k_3LINESTYLE = dotted
|
||||
|
||||
salvis-wm-vw-50k_1SELECT = wm_visuals where name='salvis-vw-64'
|
||||
salvis-wm-vw-50k_2SELECT = wm_visuals where name='salvis-wm-75'
|
||||
salvis-wm-vw-50k_3SELECT = wm_visuals where name='salvis'
|
||||
salvis-wm-vw-50k_1COLOR = green
|
||||
salvis-wm-vw-50k_2COLOR = orange
|
||||
salvis-wm-vw-50k_3LINESTYLE = dotted
|
||||
|
||||
salvis-wm-vw-chaikin-50k_1SELECT = wm_visuals where name='salvis-vw-64-chaikin'
|
||||
salvis-wm-vw-chaikin-50k_2SELECT = wm_visuals where name='salvis-wm-75'
|
||||
salvis-wm-vw-chaikin-50k_3SELECT = wm_visuals where name='salvis'
|
||||
salvis-wm-vw-chaikin-50k_1COLOR = green
|
||||
salvis-wm-vw-chaikin-50k_2COLOR = orange
|
||||
salvis-wm-vw-chaikin-50k_3LINESTYLE = dotted
|
||||
|
||||
|
||||
salvis-wm-dp-chaikin-50k_1SELECT =
|
||||
|
||||
salvis-wm-vw-chaikin-50k_1SELECT =
|
||||
|
||||
.faux_db_pre: db init.sql
|
||||
bash db start
|
||||
bash db -f init.sql
|
||||
|
||||
106
mj-msc.tex
106
mj-msc.tex
@ -270,12 +270,12 @@ simplification for scale 1:\numprint{50000} and especially for
|
||||
\begin{figure}[ht]
|
||||
\centering
|
||||
\begin{subfigure}[b]{.49\textwidth}
|
||||
\includegraphics[width=\textwidth]{salvis-douglas-64-50k}
|
||||
\includegraphics[width=\textwidth]{salvis-dp-64-50k}
|
||||
\caption{Using {\DP}.}
|
||||
\end{subfigure}
|
||||
\hfill
|
||||
\begin{subfigure}[b]{.49\textwidth}
|
||||
\includegraphics[width=\textwidth]{salvis-visvalingam-64-50k}
|
||||
\includegraphics[width=\textwidth]{salvis-vw-64-50k}
|
||||
\caption{Using {\VW}.}
|
||||
\end{subfigure}
|
||||
\caption{Simplified using classical algorithms (1:\numprint{50000}).}
|
||||
@ -291,15 +291,15 @@ generalization, illustrated in figure~\ref{fig:salvis-generalized-chaikin-50k}.
|
||||
\begin{figure}[ht!]
|
||||
\centering
|
||||
\begin{subfigure}[b]{.49\textwidth}
|
||||
\includegraphics[width=\textwidth]{salvis-douglas-64-chaikin-50k}
|
||||
\includegraphics[width=\textwidth]{salvis-dp-64-chaikin-50k}
|
||||
\caption{{\DP} and Chaikin's.}
|
||||
\label{fig:salvis-douglas-64-chaikin-50k}
|
||||
\label{fig:salvis-dp-64-chaikin-50k}
|
||||
\end{subfigure}
|
||||
\hfill
|
||||
\begin{subfigure}[b]{.49\textwidth}
|
||||
\includegraphics[width=\textwidth]{salvis-visvalingam-64-chaikin-50k}
|
||||
\includegraphics[width=\textwidth]{salvis-vw-64-chaikin-50k}
|
||||
\caption{{\VW} and Chaikin's.}
|
||||
\label{fig:salvis-visvalingam-64-chaikin-50k}
|
||||
\label{fig:salvis-vw-64-chaikin-50k}
|
||||
\end{subfigure}
|
||||
\caption{Simplified and smoothened river (1:\numprint{50000}).}
|
||||
\label{fig:salvis-generalized-chaikin-50k}
|
||||
@ -308,18 +308,18 @@ generalization, illustrated in figure~\ref{fig:salvis-generalized-chaikin-50k}.
|
||||
\begin{figure}[ht!]
|
||||
\centering
|
||||
\begin{subfigure}[b]{.49\textwidth}
|
||||
\includegraphics[width=\textwidth]{salvis-overlaid-douglas-64-chaikin-50k}
|
||||
\includegraphics[width=\textwidth]{salvis-overlaid-dp-64-chaikin-50k}
|
||||
|
||||
\caption{Original (fig.~\ref{fig:salvis-50k}) and simplified
|
||||
(fig.~\ref{fig:salvis-douglas-64-chaikin-50k}).}
|
||||
(fig.~\ref{fig:salvis-dp-64-chaikin-50k}).}
|
||||
|
||||
\end{subfigure}
|
||||
\hfill
|
||||
\begin{subfigure}[b]{.49\textwidth}
|
||||
\includegraphics[width=\textwidth]{salvis-overlaid-visvalingam-64-chaikin-50k}
|
||||
\includegraphics[width=\textwidth]{salvis-overlaid-vw-64-chaikin-50k}
|
||||
|
||||
\caption{Original (fig.~\ref{fig:salvis-50k}) and simplified
|
||||
(fig.~\ref{fig:salvis-visvalingam-64-chaikin-50k}.)}
|
||||
(fig.~\ref{fig:salvis-vw-64-chaikin-50k}.)}
|
||||
|
||||
\end{subfigure}
|
||||
\caption{Zoomed-in simplified and smoothened river and original.}
|
||||
@ -1361,19 +1361,34 @@ Figure~\ref{fig:isolated-1-exaggerated} illustrates an exaggerated bend using
|
||||
\section{Results}
|
||||
\label{sec:results}
|
||||
|
||||
This section visualizes the results, discusses robustness and issues of the
|
||||
generalization, and suggests specific improvements.
|
||||
|
||||
One of our goals is to compare the generalized lines with the official
|
||||
generalized dataset\cite{nzt}. Therefore, we have selected the target scales
|
||||
that the official sources offer too: 1:\numprint{50000} and
|
||||
1:\numprint{250000}. The \textsc{dhalfcircle} values for the subset are as
|
||||
follows:
|
||||
|
||||
\begin{table}[ht]
|
||||
\centering
|
||||
\begin{tabular}{ c D{.}{.}{1} }
|
||||
Scale & \multicolumn{1}{c}{$D(m)$} \\ \hline
|
||||
1:\numprint{50000} & 75 \\
|
||||
1:\numprint{250000} & 220 \\
|
||||
\end{tabular}
|
||||
\end{table}
|
||||
|
||||
Our generalized results are viewed from the following angles:
|
||||
\begin{itemize}
|
||||
\item Compare to the non-simplified originals.
|
||||
\item Compare to the official datasets.
|
||||
\item Compare to {\DP} and {\VW}.
|
||||
\end{itemize}
|
||||
|
||||
\subsection{Generalization Results of Analyzed Rivers}
|
||||
\label{sec:generalization-results-of-analyzed-rivers}
|
||||
|
||||
Figures~\ref{fig:salvis-wm-50k} and~\ref{fig:salvis-wm-250k} visualize
|
||||
the generalization result for Šalčia and Visinčia using {\WM} with the
|
||||
\textsc{dhalfcircle} values from the
|
||||
table~\ref{table:scale-halfcirlce-diameter}:
|
||||
|
||||
\begin{itemize}
|
||||
\item 1:\numprint{50000}: 75.
|
||||
\item 1:\numprint{250000}: 220.
|
||||
\end{itemize}
|
||||
|
||||
\subsubsection{Medium-scale (1:\numprint{50000})}
|
||||
\label{sec:analyzed-medium-scale}
|
||||
|
||||
@ -1468,7 +1483,7 @@ future research and improvement:
|
||||
|
||||
\end{itemize}
|
||||
|
||||
\subsection{Comparing Generalized Result with National Spatial Datasets}
|
||||
\subsection{Comparison with National Spatial Datasets}
|
||||
|
||||
\subsubsection{Background}
|
||||
|
||||
@ -1504,7 +1519,7 @@ all three shapes: GDR50LT, {\WM}--simplified GDB10LT, and the original GDB10LT.
|
||||
\includegraphics[width=\textwidth]{salvis-wm-gdr50}
|
||||
|
||||
\caption{2x zoomed-in GDR50LT (green), {\WM}--simplified GDB10LT (orange)
|
||||
and original GDB10LT (black).}
|
||||
and original GDB10LT (dotted black).}
|
||||
|
||||
\label{fig:salvis-wm-gdr50}
|
||||
\end{figure}
|
||||
@ -1548,6 +1563,51 @@ desired in section~\ref{sec:future-suggestions}.
|
||||
\end{figure}
|
||||
|
||||
|
||||
\subsection{Comparison with {\DP} and {\VW}}
|
||||
|
||||
It is time to visually compare our implementation with the classical
|
||||
algorithms: {\DP}, {\VW} and Chaikin. Since we have established more work is
|
||||
needed for small-scale maps (1:\numprint{250000}), we will limit the comparison
|
||||
in this section to 1:\numprint{50000}.
|
||||
|
||||
\begin{figure}[h!]
|
||||
\includegraphics[width=\textwidth]{salvis-wm-dp-50k}
|
||||
|
||||
\caption{{\DP} (green), {\WM} (orange) and original (black dotted) at
|
||||
1:\numprint{50000}.}
|
||||
|
||||
\label{fig:salvis-wm-dp-50k}
|
||||
\end{figure}
|
||||
|
||||
\begin{figure}[h!]
|
||||
\includegraphics[width=\textwidth]{salvis-wm-dp-chaikin-50k}
|
||||
|
||||
\caption{Chaikin--smoothened {\DP} (green), {\WM} (orange) and original
|
||||
(black dotted) at 1:\numprint{50000}.}
|
||||
|
||||
\label{fig:salvis-wm-dp-chaikin-50k}
|
||||
\end{figure}
|
||||
|
||||
|
||||
\begin{figure}[h!]
|
||||
\includegraphics[width=\textwidth]{salvis-wm-vw-50k}
|
||||
|
||||
\caption{{\VW} (green), {\WM} (orange) and original (black dotted) at
|
||||
1:\numprint{50000}.}
|
||||
|
||||
\label{fig:salvis-wm-vw-50k}
|
||||
\end{figure}
|
||||
|
||||
\begin{figure}[h!]
|
||||
\includegraphics[width=\textwidth]{salvis-wm-vw-chaikin-50k}
|
||||
|
||||
\caption{Chaikin--smoothened {\VW} (green), {\WM} (orange) and original
|
||||
(black dotted) at 1:\numprint{50000}.}
|
||||
|
||||
\label{fig:salvis-wm-vw-chaikin-50k}
|
||||
\end{figure}
|
||||
|
||||
|
||||
\subsection{Testing Results Online}
|
||||
\label{sec:testing-results-online}
|
||||
|
||||
@ -1605,7 +1665,7 @@ implementation:
|
||||
a exaggerated bends that became sharp and includes some future ideas.
|
||||
|
||||
\item What are the exaggeration limits when working with large scales?
|
||||
Section~\ref{sec:national-large-scales} discusses examples that some
|
||||
Section~\ref{sec:national-large-scale} discusses examples that some
|
||||
limits are necessary.
|
||||
|
||||
\item Research when bends should be marked as \textsc{isolated}. As is
|
||||
|
||||
10
visuals.sql
10
visuals.sql
@ -125,14 +125,14 @@ declare
|
||||
geom2 geometry;
|
||||
geom3 geometry;
|
||||
begin
|
||||
foreach i in array array[16, 64, 256] loop
|
||||
foreach i in array array[16, 32, 64, 256] loop
|
||||
geom1 = st_simplify((select way from wm_visuals where name='salvis'), i);
|
||||
geom2 = st_simplifyvw((select way from wm_visuals where name='salvis'), i*i);
|
||||
insert into wm_visuals(name, way) values
|
||||
('salvis-douglas-' || i, geom1),
|
||||
('salvis-douglas-' || i || '-chaikin', st_chaikinsmoothing(geom1, 5)),
|
||||
('salvis-visvalingam-' || i, geom2),
|
||||
('salvis-visvalingam-' || i || '-chaikin', st_chaikinsmoothing(geom2, 5));
|
||||
('salvis-dp-' || i, geom1),
|
||||
('salvis-dp-' || i || '-chaikin', st_chaikinsmoothing(geom1, 5)),
|
||||
('salvis-vw-' || i, geom2),
|
||||
('salvis-vw-' || i || '-chaikin', st_chaikinsmoothing(geom2, 5));
|
||||
end loop;
|
||||
|
||||
-- more than 220 doesn't work, because there is an exaggerated bend near
|
||||
|
||||
Loading…
Reference in New Issue
Block a user