"""
Python module for use with David Lowe's SIFT code available at:
http://www.cs.ubc.ca/~lowe/keypoints/
adapted from the matlab code examples.

import os
from numpy import *
import pylab


def process_image(imagename, resultname):
    """ process an image and save the results in a .key ascii file"""

    #check if linux or windows
    if os.name == "posix":
        cmmd = "./sift <"+imagename+">"+resultname
    else:
         cmmd = "siftWin32 <"+imagename+">"+resultname

    os.system(cmmd)
    print 'processed', imagename

import sift
imname = ’empire.jpg’
im1 = array(Image.open(imname).convert(’L’))
sift.process_image(imname,’empire.sift’)
l1,d1 = sift.read_features_from_file(’empire.sift’)
figure()
gray()
sift.plot_features(im1,l1,circle=True)
show()