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scipy.misc.toimage (and therefore imresize) converts to uint32 when it should convert to int32 (Trac #1781) #2300

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scipy.misc.toimage (and therefore imresize) converts to uint32 when it should convert to int32 (Trac #1781)#2300
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Migrated from TracdefectA clear bug or issue that prevents SciPy from being installed or used as expectedscipy.misc
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1.0.0
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opened on Apr 25, 2013

Original ticket http://projects.scipy.org/scipy/ticket/1781 on 2012-11-29 by trac user ecuzzillo, assigned to unknown.

Line 247 of scipy/misc/pilutil.py reads

data32 = data.astype(numpy.uint32)

and should read

data32 = data.astype(numpy.int32)

because http://www.pythonware.com/library/pil/handbook/concepts.htm

says 'I' means SIGNED integers.

This caused a fair amount of consternation.

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