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[book_gpu.git] / BookGPU / Chapters / chapter3 / ch3.tex

diff --git a/BookGPU/Chapters/chapter3/ch3.tex b/BookGPU/Chapters/chapter3/ch3.tex
index 64709ea4e51f510d3925a37e43f552f5852e8068..7078aaffe378b04beaeef5bbda0dfe0aa55407f5 100755 (executable)
--- a/BookGPU/Chapters/chapter3/ch3.tex
+++ b/BookGPU/Chapters/chapter3/ch3.tex
@@ -181,10 +181,10 @@ On the GPU's side, we note high dependence on window size due to the redundancy
 
 \begin{figure}[t]
 \centering
 
 \begin{figure}[t]
 \centering

-   \subfigure[Airplane image, corrupted by salt and pepper noise of density 0.25]{\label{img:sap_example_ref} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25.png}}\qquad
-   \subfigure[Image denoised by a $3\times 3$ median filter]{\label{img:sap_example_med3} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_med3.png}}\\
-   \subfigure[Image denoised by a $5\times 5$ median filter]{\label{img:sap_example_med5} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_med5.png}}\qquad
-   \subfigure[Image denoised by 2 iterations of a $3\times 3$ median filter]{\label{img:sap_example_med3_it2} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_med3_it2.png}}\\
+   \subfigure[Airplane image, corrupted by salt and pepper noise of density 0.25]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25.png}}\qquad
+   \subfigure[Image denoised by a $3\times 3$ median filter]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_med3.png}}\\
+   \subfigure[Image denoised by a $5\times 5$ median filter]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_med5.png}}\qquad
+   \subfigure[Image denoised by 2 iterations of a $3\times 3$ median filter]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_med3_it2.png}}\\

    \caption{Example of median filtering, applied to salt and pepper noise reduction.}
    \label{fig:sap_examples}
 \end{figure}
    \caption{Example of median filtering, applied to salt and pepper noise reduction.}
    \label{fig:sap_examples}
 \end{figure}


@@ -351,10 +351,10 @@ Torben Morgensen sorting takes place between lines 37 and 66 and eventually, the
 It has to be noticed that this smoother, unlike the technique we proposed for fixed-size median filters, cannot be considered as a state-of-the-art technique as, for example, the one presented in \cite{4287006}. However, it may be considered as a good, easy to use and efficient alternative as confirmed by the results presented in Table \ref{tab:medianSeparable}. Pixel throughput values achieved by our kernel, though not constant with window size, remain very competitive if window size is kept under $120\times 120$ pixels, especially when outputting 2 pixels per thread (in \cite{4287006}, pixel throughput is around 7MP/s).
 Figure \ref{fig:sap_examples2} shows an example of a $512\times 512$ pixel image, corrupted by a  \textit{salt and pepper} noise, and the denoised versions, outputted respectively by a $3\times 3$, a $5\times 5$, and a $55\times 55 $ separable smoother.
 \begin{figure}
 It has to be noticed that this smoother, unlike the technique we proposed for fixed-size median filters, cannot be considered as a state-of-the-art technique as, for example, the one presented in \cite{4287006}. However, it may be considered as a good, easy to use and efficient alternative as confirmed by the results presented in Table \ref{tab:medianSeparable}. Pixel throughput values achieved by our kernel, though not constant with window size, remain very competitive if window size is kept under $120\times 120$ pixels, especially when outputting 2 pixels per thread (in \cite{4287006}, pixel throughput is around 7MP/s).
 Figure \ref{fig:sap_examples2} shows an example of a $512\times 512$ pixel image, corrupted by a  \textit{salt and pepper} noise, and the denoised versions, outputted respectively by a $3\times 3$, a $5\times 5$, and a $55\times 55 $ separable smoother.
 \begin{figure}

-   \subfigure[Airplane image, corrupted with by salt and pepper noise of density 0.25]{\label{img:sap_example_ref} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25.png}}\qquad
-   \subfigure[Image denoised by a $3\times 3$ separable smoother]{\label{img:sap_example_sep_med3} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_sep_med3.png}}\\
-   \subfigure[Image denoised by a $5\times 5$ separable smoother]{\label{img:sap_example_sep_med5} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_sep_med5.png}}\qquad
-   \subfigure[Image background estimation by a $55\times 55$ separable smoother]{\label{img:sap_example_sep_med3_it2} \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_sep_med111.png}}\\
+   \subfigure[Airplane image, corrupted with by salt and pepper noise of density 0.25]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25.png}}\qquad
+   \subfigure[Image denoised by a $3\times 3$ separable smoother]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_sep_med3.png}}\\
+   \subfigure[Image denoised by a $5\times 5$ separable smoother]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_sep_med5.png}}\qquad
+   \subfigure[Image background estimation by a $55\times 55$ separable smoother]{ \includegraphics[width=5cm]{Chapters/chapter3/img/airplane_sap25_sep_med111.png}}\\

    \caption{Example of separable median filtering (smoother), applied to salt and pepper noise reduction.}
    \label{fig:sap_examples2}
 \end{figure}
    \caption{Example of separable median filtering (smoother), applied to salt and pepper noise reduction.}
    \label{fig:sap_examples2}
 \end{figure}