Am 31.08.2011, 16:21 Uhr, schrieb Ingo Randolf <i...@quitch.net>:
Hi all.
I have a list with float-values describing an image like this:
[R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, ... etc.]
the RGBA-values are from 0. - 1.
is there a clever way to make a PIL-Image out of something like this?
i played around with putdata... and came along with this, very, very
slow solution:
px = list-of-rgba-values-as-floats
img = the-image
#make int-tuples
newdata = [(int(px[(x*4)]*255), int(px[(x*4)+1]*255),
int(px[(x*4)+2]*255), int(px[(x*4)+3]*255)) for x in range( img.size[0]
* img.size[1] )]
Image.putdata(newdata)
well i never saw a result, because it took too long for my short
patience...
You can turn that list into a list of tuples for each pixel like this
new_array = []
for idx in range(0, len(l), 4)
new_array.append(tuple(l[idx:idx+4]))
You can probably wrap this in some functional programming so that you are
not using memory for transitional data structures.
Charlie
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