Source Code for Module fabio.pilatusimage

 1  #!/usr/bin/env python 
 2  """ 
 3   
 4  Authors: Henning O. Sorensen & Erik Knudsen 
 5           Center for Fundamental Research: Metal Structures in Four Dimensions 
 6           Risoe National Laboratory 
 7           Frederiksborgvej 399 
 8           DK-4000 Roskilde 
 9           email:henning.sorensen@risoe.dk 
10   
11           + (mods for fabio) Jon Wright, ESRF 
12  marccdimage can read MarCCD and MarMosaic images including header info. 
13   
14  JPW : Use a parser in case of typos (sorry?) 
15   
16  """ 
17   
18   
19  # Base this on the tifimage (as Pilatus is tiff with a  
20  # tiff header  
21   
22  from fabio.tifimage import tifimage 
23   
24   
25 -class pilatusimage(tifimage): 
26      """ Read in Pilatus format, also  
27          pilatus images, including header info """ 
28   
29   
30 -    def _readheader(self, infile): 
31          """ 
32          Parser based approach 
33          Gets all entries 
34          """ 
35  #        infile = open(infile) 
36          hstr = infile.read(4096) 
37          # well not very pretty - but seems to find start of  
38          # header information 
39          hstr = hstr[hstr.index('# '):] 
40          hstr = hstr[:hstr.index('\x00')] 
41          hstr = hstr.split('#') 
42          go_on = True 
43          while go_on: 
44              try: 
45                  hstr.remove('') 
46              except: 
47                  go_on = False 
48   
49   
50          self.header = {} 
51           
52          for line in hstr: 
53              line = line[1:line.index('\r\n')] 
54              if line.find(':') > -1: 
55                  dump = line.split(':') 
56                  self.header[dump[0]] = dump[1] 
57              elif line.find('=') > -1: 
58                  dump = line.split('=') 
59                  self.header[dump[0]] = dump[1] 
60              elif line.find(' ') > -1: 
61                  i = line.find(' ') 
62                  self.header[line[:i]] = line[i:] 
63              elif line.find(',') > -1: 
64                  dump = line.split(',') 
65                  self.header[dump[0]] = dump[1] 
66                   
67          return self.header 
68           
69   
70   
71 -    def _read(self, fname): 
72          """ 
73          inherited from tifimage 
74          ... a Pilatus image *is a* tif image 
75          just with a header 
76          """ 
77          return tifimage.read(self, fname) 
78