opencv/samples/python/chessboard.py
2012-02-17 08:48:06 +00:00

34 lines
1.2 KiB
Python
Executable File

#!/usr/bin/python
import cv2.cv as cv
import sys
import urllib2
if __name__ == "__main__":
cv.NamedWindow("win")
if len(sys.argv) > 1:
filename = sys.argv[1]
im = cv.LoadImage(filename, cv.CV_LOAD_IMAGE_GRAYSCALE)
im3 = cv.LoadImage(filename, cv.CV_LOAD_IMAGE_COLOR)
else:
try: # try opening local copy of image
fileName = '../cpp/left01.jpg'
im = cv.LoadImageM(fileName, False)
im3 = cv.LoadImageM(fileName, True)
except: # if local copy cannot be opened, try downloading it
url = 'http://code.opencv.org/svn/opencv/trunk/opencv/samples/cpp/left01.jpg'
filedata = urllib2.urlopen(url).read()
imagefiledata = cv.CreateMatHeader(1, len(filedata), cv.CV_8UC1)
cv.SetData(imagefiledata, filedata, len(filedata))
im = cv.DecodeImageM(imagefiledata, cv.CV_LOAD_IMAGE_GRAYSCALE)
im3 = cv.DecodeImageM(imagefiledata, cv.CV_LOAD_IMAGE_COLOR)
chessboard_dim = ( 9, 6 )
found_all, corners = cv.FindChessboardCorners( im, chessboard_dim )
print found_all, len(corners)
cv.DrawChessboardCorners( im3, chessboard_dim, corners, found_all )
cv.ShowImage("win", im3);
cv.WaitKey()