1 | # -*- coding: utf-8 -*- |
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2 | ########### SVN repository information ################### |
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3 | # $Date: 2014-12-27 11:14:59 -0600 (Sat, 27 Dec 2014) $ |
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4 | # $Author: $ |
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5 | # $Revision: $ |
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6 | # $URL: $ |
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7 | # $Id: $ |
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8 | ########### SVN repository information ################### |
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9 | ''' |
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10 | *Module G2img_1TIF: Tagged-image File images* |
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11 | -------------------------------------------------- |
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12 | |
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13 | Routine to read an image in Tagged-image file (TIF) format as well as a variety |
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14 | of slightly incorrect pseudo-TIF formats used at instruments around the world. |
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15 | Note that the name ``G2img_1TIF`` is used so that this file will |
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16 | sort to the top of the image formats and thus show up first in the menu. |
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17 | (It is the most common, alas). |
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18 | |
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19 | ''' |
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20 | |
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21 | import sys |
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22 | import struct as st |
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23 | import os.path as ospath |
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24 | import GSASIIIO as G2IO |
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25 | import GSASIIpath |
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26 | import numpy as np |
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27 | DEBUG = False |
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28 | GSASIIpath.SetVersionNumber("$Revision: $") |
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29 | class TIF_ReaderClass(G2IO.ImportImage): |
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30 | '''Reads TIF files using a routine (:func:`GetTifData`) that looks |
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31 | for files that can be identified from known instruments and will |
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32 | correct for slightly incorrect TIF usage. If that routine fails, |
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33 | it will be read with a standard TIF reader, which can handle compression |
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34 | and other things less commonly used at beamlines. |
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35 | ''' |
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36 | def __init__(self): |
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37 | super(self.__class__,self).__init__( # fancy way to self-reference |
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38 | extensionlist=('.tif','.tiff'), |
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39 | strictExtension=False, |
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40 | formatName = 'TIF image', |
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41 | longFormatName = 'Various .tif and pseudo-TIF formats' |
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42 | ) |
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43 | |
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44 | def ContentsValidator(self, filepointer): |
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45 | '''Does the header match the required TIF header? |
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46 | ''' |
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47 | tag = filepointer.read(2) |
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48 | if tag == 'II' and int(st.unpack('<h',filepointer.read(2))[0]) == 42: #little endian |
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49 | pass |
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50 | elif tag == 'MM' and int(st.unpack('>h',filepointer.read(2))[0]) == 42: #big endian |
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51 | pass |
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52 | else: |
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53 | return False # header not found; not valid TIF |
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54 | return True |
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55 | |
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56 | def Reader(self,filename,filepointer, ParentFrame=None, **unused): |
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57 | '''Read the TIF file using :func:`GetTifData`. If that fails, |
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58 | use :func:`scipy.misc.imread` and give the user a chance to |
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59 | edit the likely wrong default image parameters. |
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60 | ''' |
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61 | |
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62 | self.Comments,self.Data,self.Npix,self.Image = GetTifData(filename) |
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63 | if self.Npix == 0: |
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64 | print("GetTifData failed to read "+str(filename)+" Trying SciPy") |
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65 | import scipy.misc |
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66 | self.Image = scipy.misc.imread(filename,flatten=True) |
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67 | self.Npix = self.Image.size |
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68 | if ParentFrame: |
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69 | self.Comments = ['no metadata'] |
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70 | self.Data = {'wavelength': 0.1, 'pixelSize': [200, 200], 'distance': 100.0} |
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71 | self.Data['size'] = list(self.Image.shape) |
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72 | self.Data['center'] = [int(i/2) for i in self.Image.shape] |
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73 | G2IO.EditImageParms(ParentFrame,self.Data,self.Comments,self.Image,filename) |
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74 | if self.Npix == 0: |
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75 | return False |
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76 | self.LoadImage(ParentFrame,filename) |
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77 | return True |
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78 | |
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79 | def GetTifData(filename): |
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80 | '''Read an image in a pseudo-tif format, |
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81 | as produced by a wide variety of software, almost always |
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82 | incorrectly in some way. |
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83 | ''' |
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84 | import struct as st |
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85 | import array as ar |
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86 | import ReadMarCCDFrame as rmf |
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87 | image = None |
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88 | File = open(filename,'rb') |
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89 | dataType = 5 |
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90 | center = [None,None] |
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91 | wavelength = None |
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92 | distance = None |
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93 | try: |
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94 | Meta = open(filename+'.metadata','Ur') |
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95 | head = Meta.readlines() |
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96 | for line in head: |
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97 | line = line.strip() |
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98 | if 'dataType=' in line: |
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99 | dataType = int(line.split('=')[1]) |
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100 | Meta.close() |
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101 | except IOError: |
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102 | print 'no metadata file found - will try to read file anyway' |
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103 | head = ['no metadata file found',] |
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104 | |
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105 | tag = File.read(2) |
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106 | byteOrd = '<' |
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107 | if tag == 'II' and int(st.unpack('<h',File.read(2))[0]) == 42: #little endian |
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108 | IFD = int(st.unpack(byteOrd+'i',File.read(4))[0]) |
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109 | elif tag == 'MM' and int(st.unpack('>h',File.read(2))[0]) == 42: #big endian |
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110 | byteOrd = '>' |
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111 | IFD = int(st.unpack(byteOrd+'i',File.read(4))[0]) |
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112 | else: |
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113 | lines = ['not a detector tiff file',] |
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114 | return lines,0,0,0 |
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115 | File.seek(IFD) #get number of directory entries |
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116 | NED = int(st.unpack(byteOrd+'h',File.read(2))[0]) |
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117 | IFD = {} |
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118 | nSlice = 1 |
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119 | for ied in range(NED): |
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120 | Tag,Type = st.unpack(byteOrd+'Hh',File.read(4)) |
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121 | nVal = st.unpack(byteOrd+'i',File.read(4))[0] |
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122 | if DEBUG: print 'Try:',Tag,Type,nVal |
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123 | if Type == 1: |
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124 | Value = st.unpack(byteOrd+nVal*'b',File.read(nVal)) |
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125 | elif Type == 2: |
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126 | Value = st.unpack(byteOrd+'i',File.read(4)) |
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127 | elif Type == 3: |
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128 | Value = st.unpack(byteOrd+nVal*'h',File.read(nVal*2)) |
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129 | x = st.unpack(byteOrd+nVal*'h',File.read(nVal*2)) |
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130 | elif Type == 4: |
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131 | if Tag in [273,279]: |
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132 | nSlice = nVal |
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133 | nVal = 1 |
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134 | Value = st.unpack(byteOrd+nVal*'i',File.read(nVal*4)) |
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135 | elif Type == 5: |
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136 | Value = st.unpack(byteOrd+nVal*'i',File.read(nVal*4)) |
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137 | elif Type == 11: |
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138 | Value = st.unpack(byteOrd+nVal*'f',File.read(nVal*4)) |
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139 | IFD[Tag] = [Type,nVal,Value] |
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140 | if DEBUG: print Tag,IFD[Tag] |
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141 | sizexy = [IFD[256][2][0],IFD[257][2][0]] |
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142 | [nx,ny] = sizexy |
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143 | Npix = nx*ny |
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144 | if 34710 in IFD: |
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145 | print 'Read MAR CCD tiff file: ',filename |
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146 | marFrame = rmf.marFrame(File,byteOrd,IFD) |
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147 | image = np.flipud(np.array(np.asarray(marFrame.image),dtype=np.int32)) |
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148 | tifType = marFrame.filetitle |
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149 | pixy = [marFrame.pixelsizeX/1000.0,marFrame.pixelsizeY/1000.0] |
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150 | head = marFrame.outputHead() |
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151 | # extract resonable wavelength from header |
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152 | wavelength = marFrame.sourceWavelength*1e-5 |
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153 | wavelength = (marFrame.opticsWavelength > 0) and marFrame.opticsWavelength*1e-5 or wavelength |
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154 | wavelength = (wavelength <= 0) and None or wavelength |
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155 | # extract resonable distance from header |
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156 | distance = (marFrame.startXtalToDetector+marFrame.endXtalToDetector)*5e-4 |
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157 | distance = (distance <= 0) and marFrame.xtalToDetector*1e-3 or distance |
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158 | distance = (distance <= 0) and None or distance |
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159 | # extract resonable center from header |
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160 | center = [marFrame.beamX*marFrame.pixelsizeX*1e-9,marFrame.beamY*marFrame.pixelsizeY*1e-9] |
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161 | center = (center[0] != 0 and center[1] != 0) and center or [None,None] |
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162 | #print head,tifType,pixy |
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163 | elif nSlice > 1: #CheMin multislice tif file! |
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164 | try: |
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165 | import Image as Im |
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166 | except ImportError: |
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167 | try: |
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168 | from PIL import Image as Im |
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169 | except ImportError: |
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170 | print "PIL/pillow Image module not present. This TIF cannot be read without this" |
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171 | #raise Exception("PIL/pillow Image module not found") |
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172 | lines = ['not a detector tiff file',] |
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173 | return lines,0,0,0 |
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174 | tifType = 'CheMin' |
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175 | pixy = [40,40] |
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176 | image = np.flipud(np.array(Im.open(filename)))*10. |
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177 | distance = 18.0 |
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178 | center = [pixy[0]*sizexy[0]/2000,0] #the CheMin beam stop is here |
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179 | wavelength = 1.78892 |
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180 | elif 272 in IFD: |
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181 | ifd = IFD[272] |
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182 | File.seek(ifd[2][0]) |
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183 | S = File.read(ifd[1]) |
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184 | if 'PILATUS' in S: |
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185 | tifType = 'Pilatus' |
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186 | dataType = 0 |
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187 | pixy = [172,172] |
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188 | File.seek(4096) |
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189 | print 'Read Pilatus tiff file: ',filename |
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190 | image = ar.array('L',File.read(4*Npix)) |
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191 | image = np.array(np.asarray(image),dtype=np.int32) |
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192 | else: |
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193 | if IFD[258][2][0] == 16: |
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194 | tifType = 'GE' |
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195 | pixy = [200,200] |
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196 | File.seek(8) |
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197 | print 'Read GE-detector tiff file: ',filename |
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198 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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199 | elif IFD[258][2][0] == 32: |
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200 | tifType = 'CHESS' |
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201 | pixy = [200,200] |
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202 | File.seek(8) |
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203 | print 'Read CHESS-detector tiff file: ',filename |
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204 | image = np.array(ar.array('L',File.read(4*Npix)),dtype=np.int32) |
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205 | elif 270 in IFD: |
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206 | File.seek(IFD[270][2][0]) |
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207 | S = File.read(IFD[273][2][0]-IFD[270][2][0]) |
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208 | if 'ImageJ' in S: |
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209 | tifType = 'ImageJ' |
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210 | dataType = 0 |
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211 | pixy = [200,200]*IFD[277][2][0] |
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212 | File.seek(IFD[273][2][0]) |
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213 | print 'Read ImageJ tiff file: ',filename |
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214 | image = ar.array('H',File.read(2*Npix)) |
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215 | if '>' in byteOrd: |
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216 | image.byteswap() |
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217 | image = np.array(np.asarray(image,dtype='H'),dtype=np.int32) |
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218 | elif 262 in IFD and IFD[262][2][0] > 4: |
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219 | tifType = 'DND' |
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220 | pixy = [158,158] |
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221 | File.seek(512) |
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222 | print 'Read DND SAX/WAX-detector tiff file: ',filename |
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223 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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224 | elif sizexy == [1536,1536]: |
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225 | tifType = 'APS Gold' |
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226 | pixy = [150,150] |
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227 | File.seek(64) |
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228 | print 'Read Gold tiff file:',filename |
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229 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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230 | elif sizexy == [2048,2048] or sizexy == [1024,1024] or sizexy == [3072,3072]: |
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231 | if IFD[273][2][0] == 8: |
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232 | if IFD[258][2][0] == 32: |
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233 | tifType = 'PE' |
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234 | pixy = [200,200] |
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235 | File.seek(8) |
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236 | print 'Read APS PE-detector tiff file: ',filename |
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237 | if dataType == 5: |
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238 | image = np.array(ar.array('f',File.read(4*Npix)),dtype=np.float32) |
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239 | else: |
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240 | image = np.array(ar.array('I',File.read(4*Npix)),dtype=np.int32) |
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241 | elif IFD[258][2][0] == 16: |
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242 | tifType = 'MedOptics D1' |
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243 | pixy = [46.9,46.9] |
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244 | File.seek(8) |
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245 | print 'Read MedOptics D1 tiff file: ',filename |
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246 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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247 | |
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248 | elif IFD[273][2][0] == 4096: |
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249 | if sizexy[0] == 3072: |
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250 | pixy = [73,73] |
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251 | tifType = 'MAR225' |
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252 | else: |
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253 | pixy = [158,158] |
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254 | tifType = 'MAR325' |
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255 | File.seek(4096) |
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256 | print 'Read MAR CCD tiff file: ',filename |
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257 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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258 | elif IFD[273][2][0] == 512: |
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259 | tiftype = '11-ID-C' |
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260 | pixy = [200,200] |
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261 | File.seek(512) |
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262 | print 'Read 11-ID-C tiff file: ',filename |
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263 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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264 | |
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265 | elif sizexy == [4096,4096]: |
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266 | if IFD[273][2][0] == 8: |
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267 | if IFD[258][2][0] == 16: |
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268 | tifType = 'scanCCD' |
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269 | pixy = [9,9] |
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270 | File.seek(8) |
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271 | print 'Read APS scanCCD tiff file: ',filename |
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272 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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273 | elif IFD[273][2][0] == 4096: |
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274 | tifType = 'Rayonix' |
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275 | pixy = [73.242,73.242] |
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276 | File.seek(4096) |
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277 | print 'Read Rayonix MX300HE tiff file: ',filename |
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278 | image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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279 | # elif sizexy == [960,960]: |
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280 | # tiftype = 'PE-BE' |
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281 | # pixy = (200,200) |
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282 | # File.seek(8) |
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283 | # if not imageOnly: |
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284 | # print 'Read Gold tiff file:',filename |
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285 | # image = np.array(ar.array('H',File.read(2*Npix)),dtype=np.int32) |
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286 | |
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287 | if image is None: |
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288 | lines = ['not a known detector tiff file',] |
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289 | return lines,0,0,0 |
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290 | |
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291 | if sizexy[1]*sizexy[0] != image.size: # test is resize is allowed |
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292 | lines = ['not a known detector tiff file',] |
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293 | return lines,0,0,0 |
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294 | |
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295 | image = np.reshape(image,(sizexy[1],sizexy[0])) |
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296 | center = (not center[0]) and [pixy[0]*sizexy[0]/2000,pixy[1]*sizexy[1]/2000] or center |
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297 | wavelength = (not wavelength) and 0.10 or wavelength |
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298 | distance = (not distance) and 100.0 or distance |
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299 | data = {'pixelSize':pixy,'wavelength':wavelength,'distance':distance,'center':center,'size':sizexy} |
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300 | File.close() |
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301 | return head,data,Npix,image |
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