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add extra output argument to tutorial

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StevenPuttemans 2015-02-23 15:13:33 +01:00
parent 7b270f4c69
commit 370389c7af
1 changed files with 1 additions and 1 deletions
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doc/py_tutorials/py_imgproc/py_contours/py_contours_begin/py_contours_begin.markdown
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@ -30,7 +30,7 @@ import cv2
im = cv2.imread('test.jpg') im = cv2.imread('test.jpg')
imgray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY) imgray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
ret,thresh = cv2.threshold(imgray,127,255,0) ret,thresh = cv2.threshold(imgray,127,255,0)
contours, hierarchy = cv2.findContours(thresh,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE) im2, contours, hierarchy = cv2.findContours(thresh,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
@endcode @endcode
See, there are three arguments in **cv2.findContours()** function, first one is source image, second See, there are three arguments in **cv2.findContours()** function, first one is source image, second
is contour retrieval mode, third is contour approximation method. And it outputs the contours and is contour retrieval mode, third is contour approximation method. And it outputs the contours and