'''
Call external C program to extract feature.

@author: chunk
chunkplus@gmail.com
2014 Dec
'''

import sys, os
import subprocess

root = "/home/chunk/workspace/dip/chunk/hog/"
path = os.path.join(root, "data/train")
imgpath = ''
hogpath = ''
for dirs in os.listdir(path):
    for _r, _d, _f in os.walk(os.path.join(path, dirs)):
        for f in _f:
            imgpath = os.path.join(path, dirs, f)
            hogpath = os.path.join(root, "hog", dirs)
            if not os.path.exists(hogpath):
                os.makedirs(hogpath)
            hogpath = os.path.join(hogpath,f.replace("jpg", "hog"))
            print hogpath
            cmd = ["/home/chunk/workspace/dip/chunk/hog/extract/extract_hog", imgpath, hogpath]
#             process = subprocess.Popen(cmd, stderr=subprocess.STDOUT, stdout=subprocess.PIPE)
            subprocess.call(cmd,stderr=subprocess.STDOUT, stdout=subprocess.PIPE)