2020-05-03 09:45:03 -0600 received badge ● Famous Question (source) 2018-11-11 09:54:02 -0600 received badge ● Notable Question (source) 2017-10-15 22:32:33 -0600 received badge ● Popular Question (source) 2014-03-16 23:44:03 -0600 asked a question Comparing……Freeman chain code and polygonal approximation speaking of two kinds of method in finding contours in an image -- Freeman chain code and polygonal approximation through Comparing …… what are the main advantages and disadvantages of each other? 2014-03-13 04:45:23 -0600 asked a question asking for an explaining of morphologyex function ！ void morphologyEx( InputArray src, OutputArray dst, int op, InputArray kernel, Point anchor=Point(-1,-1), int iterations=1, int borderType=BORDER_CONSTANT, const Scalar& borderValue=morphologyDefaultBorderValue() ); who can explain the meaning of the following variables in morphologyex as detailed as possible kernel； anchor=point（-1，-1）； iteration=1； bordertype； Scalar& borderValue=morphologyDefaultBorderValue()； a newbie so THANKS in advance for your any reply or comment！！！ 2014-03-09 06:56:36 -0600 commented question code below running in VC2010 ，no error but failed，help！ ok sorry，we used to call that for a respect in Shandong…maybe have something to do with Confucius，welcome to Shandong！ 2014-03-06 01:52:28 -0600 commented question code below running in VC2010 ，no error but failed，help！ 请问这位老师，我可以在一段程序中同时使用c &c++ 数据结构并且相互转换吗？ 2014-03-05 06:35:32 -0600 asked a question code below running in VC2010 ，no error but failed，help！ Mat src,dst,dst1; IplImage* pI; int count_black=0; char*window_name="window"; int main() { src=imread("F:\peo.jpg",1); cvtColor(src,dst,CV_BGR2GRAY); threshold(dst,dst1,10,255,0); Mat dst1; IplImage* pI = &dst1.operator IplImage(); int count_black=cvCountNonZero (pI); cout<<" "< > contours_poly( contours.size() ); i want to know details of this code;double vect<> and ( contours.size() more clear will be better,im new to that,thanks in advance! 2014-03-01 04:58:05 -0600 answered a question How to save a rectangular ROI? C++ version： function—Mat roi(image,Rect(20,20,60,60)); that means selecting roi （20,20,60,60） a rectangle you know 2014-02-18 09:32:54 -0600 commented answer How to get length and width of a bounding box? sorry，IM new ，so how to get karma points？and whats that ps：im a chinese unfamiliar to foreign website due to the“ great wall “ 2014-02-18 05:12:44 -0600 commented answer How to get length and width of a bounding box? the reply is exciting ! so good，so thanks! 2014-02-18 02:14:23 -0600 asked a question How to get length and width of a bounding box? I want to identify the length and width of a bounding box in OpenCV, any functions I need in the LIB? please give me some tips,ideas~ MUCH THANKS IN ADVANCE!!!