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Viewing changes to Sane/demo_numarray.py

  • Committer: Package Import Robot
  • Author(s): Matthias Klose
  • Date: 2013-01-31 20:49:20 UTC
  • mfrom: (27.1.1 raring-proposed)
  • Revision ID: package-import@ubuntu.com-20130131204920-b5zshy6vgfvdionl
Tags: 1.1.7+1.7.8-1ubuntu1
Rewrite build dependencies to allow cross builds.

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Sane/demo_numarray.py
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# Shows how to scan a 16 bit grayscale image into a numarray object
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#
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from __future__ import print_function
 
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# Get the path set up to find PIL modules if not installed yet:
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import sys ; sys.path.append('../PIL')
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def toImage(arr):
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    if arr.type().bytes == 1:
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        # need to swap coordinates btw array and image (with [::-1])
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        im = Image.fromstring('L', arr.shape[::-1], arr.tostring())
 
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        im = Image.frombytes('L', arr.shape[::-1], arr.tostring())
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    else:
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        arr_c = arr - arr.min()
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        arr_c *= (255./arr_c.max())
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        arr = arr_c.astype(UInt8)
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        # need to swap coordinates btw array and image (with [::-1])
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        im = Image.fromstring('L', arr.shape[::-1], arr.tostring())
 
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        im = Image.frombytes('L', arr.shape[::-1], arr.tostring())
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    return im
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print 'SANE version:', sane.init()
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print 'Available devices=', sane.get_devices()
 
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print('SANE version:', sane.init())
 
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print('Available devices=', sane.get_devices())
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s = sane.open(sane.get_devices()[0][0])
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s.mode = 'gray'
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s.br_x=320. ; s.br_y=240.
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print 'Device parameters:', s.get_parameters()
 
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print('Device parameters:', s.get_parameters())
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s.depth=16
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arr16 = s.arr_scan()