/[escript]/trunk/pyvisi/py_src/imagereader.py
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Annotation of /trunk/pyvisi/py_src/imagereader.py

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Revision 1809 - (hide annotations)
Thu Sep 25 06:43:44 2008 UTC (12 years, 6 months ago) by ksteube
File MIME type: text/x-python
File size: 2443 byte(s)
Copyright updated in all python files

1 ksteube 1809
2     ########################################################
3     #
4     # Copyright (c) 2003-2008 by University of Queensland
5     # Earth Systems Science Computational Center (ESSCC)
6     # http://www.uq.edu.au/esscc
7     #
8     # Primary Business: Queensland, Australia
9     # Licensed under the Open Software License version 3.0
10     # http://www.opensource.org/licenses/osl-3.0.php
11     #
12     ########################################################
13    
14     __copyright__="""Copyright (c) 2003-2008 by University of Queensland
15     Earth Systems Science Computational Center (ESSCC)
16     http://www.uq.edu.au/esscc
17     Primary Business: Queensland, Australia"""
18     __license__="""Licensed under the Open Software License version 3.0
19     http://www.opensource.org/licenses/osl-3.0.php"""
20     __url__="http://www.uq.edu.au/esscc/escript-finley"
21    
22 ksteube 1147 """
23 jongui 1197 @var __author__: name of author
24     @var __copyright__: copyrights
25     @var __license__: licence agreement
26     @var __url__: url entry point on documentation
27     @var __version__: version
28     @var __date__: date of the version
29 ksteube 1147 """
30    
31 jongui 1197 __author__="John Ngui, john.ngui@uq.edu.au"
32    
33 ksteube 1147 import vtk
34     from constant import ImageFormat
35    
36     class ImageReader:
37     """
38     Class that defines an image reader. An image reader is used to read
39     data from an image in a variety of formats.
40     """
41    
42     def __init__(self, format):
43     """
44     Initialise the image reader.
45    
46     @type format: L{ImageFormat <constant.ImageFormat>} constant
47     @param format: Format of the image
48     """
49    
50     self.__format = format
51     self.__vtk_image_reader = self.__getImageReader()
52    
53     def __getImageReader(self):
54     """
55     Return the corresponding image reader based on the supplied image
56     format.
57    
58     @rtype: vtkImageReader2 (i.e. vtkJPEGReader, etc)
59     @return: Image reader
60     """
61    
62     if(self.__format == ImageFormat.JPG):
63     return vtk.vtkJPEGReader()
64     elif(self.__format == ImageFormat.BMP):
65     return vtk.vtkBMPReader()
66     elif(self.__format == ImageFormat.PNM):
67     return vtk.vtkPNMReader()
68     elif(self.__format == ImageFormat.PNG):
69     return vtk.vtkPNGReader()
70     elif(self.__format == ImageFormat.TIF):
71     return vtk.vtkTIFFReader()
72    
73     def setImageName(self, image_name):
74     """
75     Set the image file name to be read.
76    
77     @type image_name: String
78 jongui 1199 @param image_name: Image name from which image data is to be read
79 ksteube 1147 """
80    
81     self.__vtk_image_reader.SetFileName(image_name)
82    
83 jongui 1148 def _getImageReaderOutput(self):
84 ksteube 1147 """
85     Return the output of the image reader.
86    
87     @rtype: vtkImageData
88     @return: Image data
89     """
90    
91     return self.__vtk_image_reader.GetOutput()
92    

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