polyline in opencv
-
how to draw polyline?
actually poly function contain (&Mat,Pts,npts etc...)how to set pts and npts values?
i tried but error:cv mat to cv arr
and then i don't know about the these arguments
finally i got pixel position in image but how to connect and draw polyline?
here i have attached example code but i can't understand
and idon,t know about how to set arguments in listexample code::
void polylines(cv::Mat& img, const std::list<std::listcv::Point2i>& polylines)
{
for (auto& polyline : polylines)
{
auto current = polyline.begin();
auto next = std::next(current, 1);
for (; next != polyline.end(); current++, next++)
{
cv::line(img, *current, *next, cv::Scalar(255));
}
}
}fi
-
how to draw polyline?
actually poly function contain (&Mat,Pts,npts etc...)how to set pts and npts values?
i tried but error:cv mat to cv arr
and then i don't know about the these arguments
finally i got pixel position in image but how to connect and draw polyline?
here i have attached example code but i can't understand
and idon,t know about how to set arguments in listexample code::
void polylines(cv::Mat& img, const std::list<std::listcv::Point2i>& polylines)
{
for (auto& polyline : polylines)
{
auto current = polyline.begin();
auto next = std::next(current, 1);
for (; next != polyline.end(); current++, next++)
{
cv::line(img, *current, *next, cv::Scalar(255));
}
}
}fi
@Rameshguru Why do you ask OpenCV questions in a Qt forum?
It would make more sense to ask in an OpenCV forum/mailing list.
