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Groups > comp.lang.python > #7634
| Date | 2011-06-14 23:06 +0100 |
|---|---|
| From | MRAB <python@mrabarnett.plus.com> |
| Subject | Re: working with raw image files |
| References | (7 earlier) <2c095413-ea59-4339-8419-ae4b688e219d@17g2000prr.googlegroups.com> <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> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.236.1308089164.11593.python-list@python.org> (permalink) |
On 14/06/2011 22:20, kafooster wrote:
> On 14 Cze, 22:26, MRAB<pyt...@mrabarnett.plus.com> wrote:
>>
>> Multiply the numpy array by a scaling factor, which is
>> float(max_8bit_value) / float(max_16bit_value).
>
> could you please explain it a little? I dont understand it. like
> multiplying each element?
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()
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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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