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import cv
import urllib2
from sys import argv
def load_sample(name=None):
if len(argv) > 1:
img0 = cv.LoadImage(argv[1], cv.CV_LOAD_IMAGE_COLOR)
elif name is not None:
try:
img0 = cv.LoadImage(name, cv.CV_LOAD_IMAGE_COLOR)
except IOError:
urlbase = 'https://code.ros.org/svn/opencv/trunk/opencv/samples/c/'
file = name.split('/')[-1]
filedata = urllib2.urlopen(urlbase+file).read()
imagefiledata = cv.CreateMatHeader(1, len(filedata), cv.CV_8UC1)
cv.SetData(imagefiledata, filedata, len(filedata))
img0 = cv.DecodeImage(imagefiledata, cv.CV_LOAD_IMAGE_COLOR)
return img0
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