| 1 |
|
| 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 |
""" |
| 23 |
@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 |
""" |
| 30 |
|
| 31 |
__author__="John Ngui, john.ngui@uq.edu.au" |
| 32 |
|
| 33 |
import vtk |
| 34 |
from constant import ImageFormat |
| 35 |
from esys.escript import getMPISizeWorld |
| 36 |
|
| 37 |
class ImageReader: |
| 38 |
""" |
| 39 |
Class that defines an image reader. An image reader is used to read |
| 40 |
data from an image in a variety of formats. |
| 41 |
""" |
| 42 |
|
| 43 |
def __init__(self, format): |
| 44 |
""" |
| 45 |
Initialise the image reader. |
| 46 |
|
| 47 |
@type format: L{ImageFormat <constant.ImageFormat>} constant |
| 48 |
@param format: Format of the image |
| 49 |
""" |
| 50 |
if getMPISizeWorld()>1: |
| 51 |
raise ValueError,"pyvisi.ImageReader is not running on more than one processor." |
| 52 |
self.__format = format |
| 53 |
self.__vtk_image_reader = self.__getImageReader() |
| 54 |
|
| 55 |
def __getImageReader(self): |
| 56 |
""" |
| 57 |
Return the corresponding image reader based on the supplied image |
| 58 |
format. |
| 59 |
|
| 60 |
@rtype: vtkImageReader2 (i.e. vtkJPEGReader, etc) |
| 61 |
@return: Image reader |
| 62 |
""" |
| 63 |
|
| 64 |
if(self.__format == ImageFormat.JPG): |
| 65 |
return vtk.vtkJPEGReader() |
| 66 |
elif(self.__format == ImageFormat.BMP): |
| 67 |
return vtk.vtkBMPReader() |
| 68 |
elif(self.__format == ImageFormat.PNM): |
| 69 |
return vtk.vtkPNMReader() |
| 70 |
elif(self.__format == ImageFormat.PNG): |
| 71 |
return vtk.vtkPNGReader() |
| 72 |
elif(self.__format == ImageFormat.TIF): |
| 73 |
return vtk.vtkTIFFReader() |
| 74 |
|
| 75 |
def setImageName(self, image_name): |
| 76 |
""" |
| 77 |
Set the image file name to be read. |
| 78 |
|
| 79 |
@type image_name: String |
| 80 |
@param image_name: Image name from which image data is to be read |
| 81 |
""" |
| 82 |
|
| 83 |
self.__vtk_image_reader.SetFileName(image_name) |
| 84 |
|
| 85 |
def _getImageReaderOutput(self): |
| 86 |
""" |
| 87 |
Return the output of the image reader. |
| 88 |
|
| 89 |
@rtype: vtkImageData |
| 90 |
@return: Image data |
| 91 |
""" |
| 92 |
|
| 93 |
return self.__vtk_image_reader.GetOutput() |
| 94 |
|
Parent Directory
| 
Revision Log