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Merge pull request #9986 from terfendail:drawcontours_docfix

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Vadim Pisarevsky 2017-11-28 13:19:05 +00:00
commit 666fc0ba69
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modules/imgproc/include/opencv2/imgproc.hpp
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@ -4584,6 +4584,11 @@ draws the contours, all the nested contours, all the nested-to-nested contours,
parameter is only taken into account when there is hierarchy available.
@param offset Optional contour shift parameter. Shift all the drawn contours by the specified
\f$\texttt{offset}=(dx,dy)\f$ .
@note When thickness=CV_FILLED, the function is designed to handle connected components with holes correctly
even when no hierarchy date is provided. This is done by analyzing all the outlines together
using even-odd rule. This may give incorrect results if you have a joint collection of separately retrieved
contours. In order to solve this problem, you need to call drawContours separately for each sub-group
of contours, or iterate over the collection using contourIdx parameter.
*/
CV_EXPORTS_W void drawContours( InputOutputArray image, InputArrayOfArrays contours,
int contourIdx, const Scalar& color,