forked from InsightSoftwareConsortium/ITK
-
Notifications
You must be signed in to change notification settings - Fork 0
/
RGBImageReadWrite.cxx
129 lines (105 loc) · 3.81 KB
/
RGBImageReadWrite.cxx
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// Software Guide : BeginLatex
//
// RGB images are commonly used for representing data acquired from
// cryogenic sections, optical microscopy and endoscopy. This example
// illustrates how to read and write RGB color images to and from a file.
// This requires the following headers as shown.
//
// \index{itk::RGBPixel!Image}
// \index{RGB!writing Image}
// \index{RGB!reading Image}
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
#include "itkRGBPixel.h"
#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
// Software Guide : EndCodeSnippet
int main( int argc, char ** argv )
{
// Verify the number of parameters in the command line
if( argc < 3 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputRGBImageFile outputRGBImageFile " << std::endl;
return EXIT_FAILURE;
}
// Software Guide : BeginLatex
//
// The \doxygen{RGBPixel} class is templated over the type used to
// represent each one of the red, green and blue components. A typical
// instantiation of the RGB image class might be as follows.
//
// \index{itk::RGBPixel!Instantiation}
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
typedef itk::RGBPixel< unsigned char > PixelType;
typedef itk::Image< PixelType, 2 > ImageType;
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// The image type is used as a template parameter to instantiate
// the reader and writer.
//
// \index{itk::ImageFileReader!RGB Image}
// \index{itk::ImageFileWriter!RGB Image}
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
typedef itk::ImageFileReader< ImageType > ReaderType;
typedef itk::ImageFileWriter< ImageType > WriterType;
ReaderType::Pointer reader = ReaderType::New();
WriterType::Pointer writer = WriterType::New();
// Software Guide : EndCodeSnippet
const char * inputFilename = argv[1];
const char * outputFilename = argv[2];
// Software Guide : BeginLatex
//
// The filenames of the input and output files must be provided to the
// reader and writer respectively.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
reader->SetFileName( inputFilename );
writer->SetFileName( outputFilename );
// Software Guide : EndCodeSnippet
ImageType::Pointer image = reader->GetOutput();
writer->SetInput( image );
// Software Guide : BeginLatex
//
// Finally, execution of the pipeline can be triggered by invoking the
// Update() method in the writer.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
writer->Update();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// You may have noticed that apart from the declaration of the
// \code{PixelType} there is nothing in this code specific to RGB
// images. All the actions required to support color images are implemented
// internally in the \doxygen{ImageIO} objects.
//
// Software Guide : EndLatex
return EXIT_SUCCESS;
}