X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fsam.git;a=blobdiff_plain;f=chapters%2FBackground.tex;h=751dbe998a9bae95e7bcd3fdb7de39786174237d;hp=605b4a2a025cb60abe9c7e426662215bd400ec12;hb=d4698605773e2b11d5a1c7f50c8821d224ad82cb;hpb=1626295286be2aeb81e7f29fb02b5630aa98bfa4

diff --git a/chapters/Background.tex b/chapters/Background.tex
index 605b4a2..751dbe9 100644
--- a/chapters/Background.tex
+++ b/chapters/Background.tex
@@ -14,16 +14,29 @@ A paper by paper summary of the literature is also available at: \\ \url{http://
 
 \section{Document Formats}
 
-\subsection{History}
-
 Since mankind climbed down from the trees... \rephrase{plagiarism alert!}
 
 \subsection{Vector Graphics vs Raster Graphics}
 
-Raster Graphics: Stores the exact pixels as they would appear on a device. Causes obvious issues with scaling.
-Vector Graphics: Stores relative position of primitives - scales better. BUT still can't scale forever.
+Raster Graphics: Stores the exact pixels as they would appear on a device. Causes obvious issues with scaling. Lowest level representation of a document.
+
+
+Vector Graphics: Stores relative position of primitives - scales better. BUT still can't scale forever. Vector Graphics must be rasterised before being drawn on most display devices.
+
+Vector Graphics formats may contain more information than is shown on the display device; Raster Graphics always contain as much or less pixel information than is shown.
+
+\rephrase{Captain Obvious strikes again!} \\
+Figure \ref{fox} shows an example of scaling. The top image is a vector graphics drawing which has been scaled. The bottom image was a raster image of the original drawing which has then been scaled by the same amount. Scaling in = interpolation/antialiasing/just scale the pixels depending on the viewer and scale; scaling out = blurring of pixels by averaging of neighbours. If you are viewing this document in a PDF viewer you can try it yourself! Otherwise, welcome to the 21st century.
+
+
+\begin{figure}[H]
+	\centering
+	\includegraphics[width=0.5\textwidth]{figures/fox.pdf}
+	\includegraphics[width=0.5\textwidth]{figures/fox.png}
+	\caption{Scaling of Vector and Raster Graphics}\label{fox}
+\end{figure}
+\rephrase{I am torn as to whether to use a Fox or Rabbit or Rox here}.
 
-\rephrase{Figures: Raster and Vector graphics at different scales}
 
 \subsection{Document Format Categories}