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Re: working with raw image files

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Date Tue, 14 Jun 2011 21:26:28 +0100
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On 14/06/2011 21:13, kafooster wrote:
> Ok, I solved the problem with matplotlib
>
> fileobj = open("hand.raw", 'rb')
> data = numpy.fromfile(fileobj,dtype=np.uint16)
> data = numpy.reshape(data,(96,470,352))
> imshow(data[:,:,40],cmap='gray')
> show()
>
> the error was caused by different order of data, however it still
> reads the dataset as half of it size. whatever.
>
> please leave the part about .raw, lets just start thinking of it from
> level of numpy array.
>
> I would like to visualize this data with PIL, but PIL works only with
> 8bit data. How could I resample my array from 16bit to 8bit?

Multiply the numpy array by a scaling factor, which is
float(max_8bit_value) / float(max_16bit_value).

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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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