OpenCV 6th 識別球體

// streammatchpicture.cpp : 定義控制台應用程式的入口點。

//#include "stdafx.h"
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include "opencv2/core/core.hpp"
#include "opencv2/features2d/features2d.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/nonfree/features2d.hpp"
#define npixelvalues     100  //檢測黑白邊界點畫素差閾值
#define ninnerpixelvalue 30   //檢測球心周圍點畫素差閾值
using
namespace cv;
using
namespace
std;
static cvmemstorage* storage = 0;
static
int nfeaturepointx = 0;//頂點x座標
static
int nfeaturepointy = 0;//頂點y座標
static
int nbottomfeaturepointy = 0;//底部端點y座標
static
bool bfeaturetoppoint = false;//球體頂點,底部端點匹配成功
void videoframedrawcircle(iplimage* pframe, iplimage* imgsrc);
void searchforbottompoint(iplimage* pframe, iplimage* pbkimg, int nheight, int nwidth, bool bfeaturebottompoint);
int main(int argc, char** argv)
storage = cvcreatememstorage(0);//建立乙個記憶體儲存器
sleep(1000);//開啟攝像頭之後需要等待1s
for (;;)
pframe->origin = 1;
nfrmnum++;
if (nfrmnum == 1)
else
if (cvwaitkey(1) == 27)//check out never use ese key
break;
}cvreleaseimage(&pbkimg);
cvreleaseimage(&pframe);
cvreleasecapture(&pcapture);
return0;}
void videoframedrawcircle(iplimage* pframe, iplimage* pbkimg)
mat lastframe(pframe);
if (!lastframe.data)
cvclearmemstorage(storage);
int nwidth = pbkimg->width;
int nheight = pbkimg->height;
nfeaturepointx = 0;
nfeaturepointy = 0;
nbottomfeaturepointy = 0;
double r1 = 0.000000, g1 = 0.000000, b1 = 0.000000;
double r2 = 0.000000, g2 = 0.000000, b2 = 0.000000;
double r3 = 0.000000, g3 = 0.000000, b3 = 0.000000;
bfeaturetoppoint = false;
bool bfeaturebottompoint = false;//bool:find bottom featurepoint
for (int i = 0; i//檢測圓形的頂點座標位置
nfeaturepointx = j;
nfeaturepointy = i + 1;
searchforbottompoint(pframe, pbkimg, nheight, nwidth, false);//檢測球體的底部頂點,左右邊界頂點:畫球體投影輪廓
}else
}else}}
else
}}void searchforbottompoint(iplimage* pframe, iplimage* pbkimg, int nheight, int nwidth, bool bfeaturebottompoint = false)//畫球體輪廓:檢測球底部頂點
else
//否則,縮小遞迴變數單位值,迴圈初始值為上一次最後y座標值
bexist = true;//遍歷一邊,存在特徵點
break;}}
else
//影象高度越界:
else
if (bexist && nstep == 2)
break;}}
if (!bexist)//確定了頂部特徵點的情況下,如果一輪下來沒有區別的畫素值發現:則終點是底部點
}//draw circle 
int pointy = (int)((nfeaturepointy + nbottomfeaturepointy) / 2);
int radius = (int)((nbottomfeaturepointy - nfeaturepointy) / 2);
cvzero(pbkimg);
if (radius < 0)
return;
if (nfeaturepointx 2)//如果球體與邊界左右相交,不做處理,退出
return;
if (nfeaturepointx + radius + 2>(nwidth - 2))
return;
bfeaturetoppoint = true;//頂點和底部端點匹配成功,符合球體規則
cvcircle(pbkimg, cvpoint(nfeaturepointx, pointy), radius, cv_rgb(0, 255, 255), 1, 8, 0);//畫圓
cstring str1;
str1.format(_t("circle point(%d,%d)  radius = %d  successful \n"), nfeaturepointx, pointy, radius);
outputdebugstring(str1);
cvflip(pbkimg, null, 0);
cvshowimage("circle", pbkimg);
}

opencv中cvcircle的使用方法

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