Using PIL modifying and then saving a TIFF returns error

Question

TLDR; I'm trying to take a TIFF, resize it, then save it. However it returns an error. This works fine if I change the saved filetype to png or jpg.

System: Windows 7 Tried using both Python 3.4 and 2.7.

Code:

from PIL import Image

try:                                               #test file exists
    im = Image.open(r"c:\temp\file.tif")
except:
    print("Error opening image")

multiply = 5                                       #how much bigger
processing = tuple([multiply*x for x in im.size])  #maths
saved = (r"c:\temp\biggerfile.tif")               #save location

imB = im.resize((processing))                      #resizing

imB.save(saved)                                    #saving

I need to resize a TIFF because I'm using tesseract-ocr, and resizing the image to get a better output. The program seems to work best with a TIFF.

The error I receive is:

_TIFFVSetField: c:\temp\biggerfile.tif: Bad value 2 for "ExtraSamples" tag.
Traceback (most recent call last):
  File "step1.py", line 15, in <module>
    imB.save(saved)
  File "C:\Python34\lib\site-packages\PIL\Image.py", line 1684, in save
    save_handler(self, fp, filename)
  File "C:\Python34\lib\site-packages\PIL\TiffImagePlugin.py", line 1185, in _save
    e = Image._getencoder(im.mode, 'libtiff', a, im.encoderconfig)
  File "C:\Python34\lib\site-packages\PIL\Image.py", line 430, in _getencoder
    return encoder(mode, *args + extra)
RuntimeError: Error setting from dictionary

Thanks!

Answer 1

Try to install libtiff http://gnuwin32.sourceforge.net/packages/tiff.htm

File "C:\Python34\lib\site-packages\PIL\TiffImagePlugin.py", line 1185, in _save
e = Image._getencoder(im.mode, 'libtiff', a, im.encoderconfig)

Looks like that's the error that is holding you up. It's trying to access libtiff and you don't have it installed so it's failing.