Here the snapshot
Nugrohos-MacBook-Pro:olah gambar nugroho$ python olahgambar.py
Program Image Enchancement
Oleh Nugroho Adi Pramono
275514
===========================
format awal: JPEG 2448x3264 RGB
konversi ke grayscale
Traceback (most recent call last):
File "olahgambar.py", line 14, in
gbw = gb.convert("L")
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL/Image.py", line 679, in convert
self.load()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL/ImageFile.py", line 189, in load
d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL/Image.py", line 385, in _getdecoder
raise IOError("decoder %s not available" % decoder_name)
IOError: decoder jpeg not available
Nugrohos-MacBook-Pro:olah gambar nugroho$
So I googling for it and found libjpeg at http://www.ijg.org/files/, download, exctract and install it using magic UNIX words ./configure, make, make install
Nugrohos-MacBook-Pro:~ nugroho$ cd Downloads/jpeg-8c/
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ ./configure
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ make
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ make test
rm -f testout*
./djpeg -dct int -ppm -outfile testout.ppm ./testorig.jpg
./djpeg -dct int -bmp -colors 256 -outfile testout.bmp ./testorig.jpg
./cjpeg -dct int -outfile testout.jpg ./testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm ./testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg ./testimg.ppm
./jpegtran -outfile testoutt.jpg ./testprog.jpg
cmp ./testimg.ppm testout.ppm
cmp ./testimg.bmp testout.bmp
cmp ./testimg.jpg testout.jpg
cmp ./testimg.ppm testoutp.ppm
cmp ./testimgp.jpg testoutp.jpg
cmp ./testorig.jpg testoutt.jpg
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ sudo make install
reinstall PIL
PIL 1.1.7 SETUP SUMMARY
--------------------------------------------------------------------
version 1.1.7
platform darwin 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
--------------------------------------------------------------------
--- TKINTER support available
--- JPEG support available
--- ZLIB (PNG/ZIP) support available
*** FREETYPE2 support not available
*** LITTLECMS support not available
--------------------------------------------------------------------
To add a missing option, make sure you have the required
library, and set the corresponding ROOT variable in the
setup.py script.
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