From 3eaddf0f052128d333879cc78f87a09f4ea570bf Mon Sep 17 00:00:00 2001
From: Jordi Inglada <jordi.inglada@orfeo-toolbox.org>
Date: Fri, 14 Apr 2006 13:40:48 +0000
Subject: [PATCH] Exemple visu grey
---
Examples/CMakeLists.txt | 1 +
Examples/Visu/CMakeLists.txt | 7 ++
Examples/Visu/GreyVisuExample.cxx | 139 ++++++++++++++++++++++++++++++
3 files changed, 147 insertions(+)
create mode 100644 Examples/Visu/CMakeLists.txt
create mode 100644 Examples/Visu/GreyVisuExample.cxx
diff --git a/Examples/CMakeLists.txt b/Examples/CMakeLists.txt
index aa774a070a..83d69f62a6 100644
--- a/Examples/CMakeLists.txt
+++ b/Examples/CMakeLists.txt
@@ -8,4 +8,5 @@ SUBDIRS(
IO
Filtering
ChangeDetection
+ Visu
)
diff --git a/Examples/Visu/CMakeLists.txt b/Examples/Visu/CMakeLists.txt
new file mode 100644
index 0000000000..2a8bbeb96a
--- /dev/null
+++ b/Examples/Visu/CMakeLists.txt
@@ -0,0 +1,7 @@
+PROJECT(FeatureExtraction)
+INCLUDE_REGULAR_EXPRESSION("^.*$")
+
+ADD_EXECUTABLE(GreyVisuExample GreyVisuExample.cxx )
+TARGET_LINK_LIBRARIES(GreyVisuExample OTBVisu OTBCommon OTBIO ITKCommon ITKIO)
+
+
diff --git a/Examples/Visu/GreyVisuExample.cxx b/Examples/Visu/GreyVisuExample.cxx
new file mode 100644
index 0000000000..6d2bcca5d7
--- /dev/null
+++ b/Examples/Visu/GreyVisuExample.cxx
@@ -0,0 +1,139 @@
+/*=========================================================================
+
+ Programme : OTB (ORFEO ToolBox)
+ Auteurs : CNES - J. Inglada
+ Language : C++
+ Date : 14 March 2005
+ Version :
+ Role :
+ $Id$
+
+=========================================================================*/
+#include <stdlib.h>
+#include "itkExceptionObject.h"
+
+#include "otbImageFileReader.h"
+
+ // Software Guide : BeginLatex
+ //
+ // \textbf{FIXME !! This example segfaults (see bug no. 27)}.
+ // This example shows the use of the \doxygen{otb::ImageViewer}
+ // class for greylevel image visualization. As usual, we start by
+ // including the header file for the class.
+ //
+ // Software Guide : EndLatex
+
+// Software Guide : BeginCodeSnippet
+#include "otbImageViewer.h"
+// Software Guide : EndCodeSnippet
+
+int main( int argc, char ** argv )
+{
+
+
+
+ if( argc != 2)
+ {
+ std::cout <<" Usage : InputImage"<<std::endl;
+ }
+
+
+ const char * inputFilename = argv[1];
+
+ // Software Guide : BeginLatex
+ //
+ // We will build a very simple pipeline where a reader gets an image
+ // from a file and gives it to the viewer. We define the types for
+ // the pixel, the image and the reader. The viewer clas is templated
+ // over the pixel type \textbf{Fixme for bugs 26 and 28}.
+ //
+ // Software Guide : EndLatex
+
+ // Siftware Guide : BeginCodeSnippet
+ typedef itk::Image< unsigned char, 2 > ImageType;
+ typedef otb::ImageFileReader< ImageType > ReaderType;
+ typedef otb::ImageViewer< ImageType::PixelType, double> ViewerType;
+ // Software Guide : EndCodeSnippet
+
+ // Software Guide : BeginLatex
+ //
+ // We create the objects.
+ //
+ // Software Guide : EndLatex
+
+ // Software Guide : BeginCodeSnippet
+ ViewerType::Pointer lViewer = ViewerType::New();
+ ReaderType::Pointer lReader = ReaderType::New();
+ lReader->SetFileName(inputFilename);
+ lReader->Update();
+ // Software Guide : EndCodeSnippet
+
+ // Software Guide : BeginLatex
+ //
+ // We can choose a label for the windows created by the viewer.
+ //
+ // Software Guide : EndLatex
+
+ // Software Guide : BeginCodeSnippet
+ lViewer->SetLabel( "My Image" );
+ // Software Guide : EndCodeSnippet
+
+ // Software Guide : BeginLatex
+ //
+ // We can now plug the pipeline and trigger the visualization by
+ // using the \code{Show} method.
+ //
+ // Software Guide : EndLatex
+
+ // Software Guide : BeginCodeSnippet
+
+ lViewer->SetImage( lReader->GetOutput() );
+
+ lViewer->Show();
+
+ // Software Guide : EndCodeSnippet
+
+ // Software Guide : BeginLatex
+ //
+ // The last step consists in starting the GUI event loop by calling
+ // the appropiate FLTK method.
+ //
+ // Software Guide : EndLatex
+
+ // Software Guide : BeginCodeSnippet
+
+ Fl::run();
+
+ // Software Guide : EndCodeSnippet
+ // Software Guide : BeginLatex
+ //
+ // \begin{figure}
+ // \center
+ // \includegraphics[width=.8\textwidth]{VisuGrey.eps}
+ // \itkcaption[Grey level image visualization.]{Example of grey
+ // mevel image visualization.}
+ // \label{fig:VisuGrey}
+ // \end{figure}
+ // The the \doxygen{otb::ImageViewer} class creates 3 windows (see
+ // figure \ref{fig:VisuGrey}) for an improved visualization of large
+ // images. This procedure is inspired from the navigation window of
+ // the Gimp and other image visualization tools. The navigation
+ // window is called here \emph{scroll} window and it shows the
+ // complete image but subsampled to a lower resolution. The pricipal
+ // window shows the region marked by a red rectangle in the scroll
+ // window using the real resolution of the image. Finally, a zoom
+ // window displays the region inside the red rectangle shown in the
+ // principal window. A mouse click on a pixel of the scroll (respectively, the
+ // pricipal window) updates the rectangle prosition and, therefore,
+ // the region viewed in the principal (respectively, the zoom)
+ // window. The zoom rate can be modified by using the + and - keys.
+ //
+ // Software Guide : EndLatex
+
+
+
+
+ return EXIT_SUCCESS;
+}
+
+
--
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