error with pillow: decoder not avaliable
breamoreboy at yahoo.co.uk
Thu Jul 2 09:42:44 CEST 2015
On 02/07/2015 08:29, telmo bacile wrote:
> Hi list, im new in this list.
> Im trying to run a python code that was made originally with pil using pillow,
> The problem is that i get this error:
> IOError: decoder jpeg not available
> Any idea why this code is not working with pillow?
> import math
> from PIL import Image
> imageFile = 'test.jpg'
> im = Image.open(imageFile)
> rgbHistogram = im.histogram()
> print 'Snannon Entropy for Red, Green, Blue:'
> for rgb in range(3):
> totalPixels = sum(rgbHistogram[rgb * 256 : (rgb + 1) * 256])
> ent = 0.0
> for col in range(rgb * 256, (rgb + 1) * 256):
> freq = float(rgbHistogram[col]) / totalPixels
> if freq > 0:
> ent = ent + freq * math.log(freq, 2)
> ent = -ent
> print ent
Searching for "python pil ioerror decoder jpeg not available" on google
gives 3,930 results of which this is the first
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
More information about the Python-list