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Groups > comp.lang.python > #7648

Re: working with raw image files

From kafooster <dmozejko@gmail.com>
Newsgroups comp.lang.python
Subject Re: working with raw image files
Date 2011-06-14 16:59 -0700
Organization http://groups.google.com
Message-ID <e16f69fb-19ed-440b-93e2-3edaa8e5ff4d@z33g2000yqb.googlegroups.com> (permalink)
References (8 earlier) <mailman.223.1308068671.11593.python-list@python.org> <bf3f66ae-9b8f-4bd9-8827-bf0cd59bd3e7@j23g2000yqc.googlegroups.com> <mailman.231.1308083252.11593.python-list@python.org> <e62e7c74-6169-42e7-acd4-3bb45c8a875b@p13g2000yqh.googlegroups.com> <mailman.236.1308089164.11593.python-list@python.org>

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On 15 Cze, 00:06, MRAB <pyt...@mrabarnett.plus.com> wrote:

>
> Yes. Something like this:
>
> fileobj = open("hand.raw", 'rb')
> data = numpy.fromfile(fileobj, dtype=numpy.uint16)
> fileobj.close()
> data = data * float(0xFF) / float(0xFFFF)
> data = numpy.array(data, dtype=numpy.uint8)
> data = data.reshape((96, 470, 352))
> imshow(data[:, :, 40], cmap='gray')
> show()

thank you very much, it works and now I can display this data even
with Image.fromarray(). As I understand, it  multiplies data elements
by a fraction, so that when we have less levels (in 8uint), it can fit
there?

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Thread

working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-13 11:18 -0700
  Re: working with raw image files Terry Reedy <tjreedy@udel.edu> - 2011-06-13 14:49 -0400
  Re: working with raw image files Wanderer <wanderer@dialup4less.com> - 2011-06-13 13:08 -0700
    Re: working with raw image files Wanderer <wanderer@dialup4less.com> - 2011-06-13 13:20 -0700
      Re: working with raw image files MRAB <python@mrabarnett.plus.com> - 2011-06-13 21:36 +0100
      Re: working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-13 13:41 -0700
        Re: working with raw image files Wanderer <wanderer@dialup4less.com> - 2011-06-13 13:52 -0700
          Re: working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-13 13:58 -0700
            Re: working with raw image files Wanderer <wanderer@dialup4less.com> - 2011-06-13 14:28 -0700
              Re: working with raw image files Martin De Kauwe <mdekauwe@gmail.com> - 2011-06-14 00:49 -0700
                Re: working with raw image files Terry Reedy <tjreedy@udel.edu> - 2011-06-14 12:24 -0400
                Re: working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-14 13:13 -0700
                Re: working with raw image files MRAB <python@mrabarnett.plus.com> - 2011-06-14 21:26 +0100
                Re: working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-14 14:20 -0700
                Re: working with raw image files MRAB <python@mrabarnett.plus.com> - 2011-06-14 23:06 +0100
                Re: working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-14 16:59 -0700
                Re: working with raw image files MRAB <python@mrabarnett.plus.com> - 2011-06-15 01:24 +0100
                Re: working with raw image files Dave Angel <davea@ieee.org> - 2011-06-14 19:25 -0400
                Re: working with raw image files kafooster <dmozejko@gmail.com> - 2011-06-14 17:02 -0700
                Re: working with raw image files Dave Angel <davea@ieee.org> - 2011-06-14 22:13 -0400
                Re: working with raw image files Nobody <nobody@nowhere.com> - 2011-06-15 02:29 +0100
                Re: working with raw image files Nobody <nobody@nowhere.com> - 2011-06-15 02:33 +0100

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