OPENCV为什么提示cvFitEllipse未定义标识符

cvFitEllipse(PointArray2D32f,count,box);
为什么老是提示cvFitEllipse为未定义标识符

是不是环境没有配置好？里面有include 的头文件，另外，代码中是不是声明了using namespace cv?

，这个就是你头文件没有引用，或者对应模块的lib没有包含在工程编译

动态链接库没导入，请查证你的动态库

#include "cv.h"
#include "highgui.h"

int slider_pos=70;//阈值

IplImage *image02 =0,*image03 = 0,*image04 = 0;
void process_image(int h);

int main(int argc ,char **argv)
{
const char *filename ="rice.png";
if ((image03 = cvLoadImage(filename,0))==0)//读入图像为灰度图像
{
return -1;
}
image02 = cvCloneImage(image03);
image04 = cvCloneImage(image03);

cvNamedWindow("Source",1);
cvNamedWindow("Result",1);

cvShowImage("Source",image03);

cvCreateTrackbar("Threshold","Result",&slider_pos,255,process_image);

process_image(0);

cvWaitKey(0);
cvSaveImage("1.jpg",image04);

cvReleaseImage(&image02);
cvReleaseImage(&image03);

cvDestroyWindow("Source");
cvDestroyWindow("Result");
return 0;

}

//这个函数寻找出轮廓、用椭圆拟合画出
void process_image(int h)
{
CvMemStorage *stor;
CvSeq *cont;
CvBox2D32f *box;
CvPoint *PointArray;
CvPoint2D32f *PointArray2D32f;

stor = cvCreateMemStorage(0);
cont = cvCreateSeq(CV_SEQ_ELTYPE_POINT,sizeof(CvSeq),sizeof(CvPoint),stor);

cvThreshold(image03,image02,slider_pos,255,CV_THRESH_BINARY);

cvFindContours(image02,stor,&cont,sizeof(CvContour),
    CV_RETR_LIST,CV_CHAIN_APPROX_NONE,cvPoint(0,0));

cvZero(image02);
cvZero(image04);

//绘制所有轮廓并用椭圆拟合
for (; cont; cont = cont->h_next)
{
    int i;
    int count = cont->total;//轮廓个数
    CvPoint center;
    CvSize size;

    /*个数必须大于6，这是cvFitEllipse_32f的要求*/
    if (count < 6)
    {
        continue;
    }

    //分配内存给点集
    PointArray = (CvPoint *)malloc(count*sizeof(CvPoint));
    PointArray2D32f = (CvPoint2D32f*)malloc(count*sizeof(CvPoint2D32f));

    //分配内存给椭圆数据
    box = (CvBox2D32f *)malloc(sizeof(CvBox2D32f));

    //得到点集（这个方法值得借鉴）
    cvCvtSeqToArray(cont, PointArray, CV_WHOLE_SEQ);

    //将CvPoint点集转化为CvBox2D32f集合
    for (i = 0; i < count; i++)
    {
        PointArray2D32f[i].x = (float)PointArray[i].x;
        PointArray2D32f[i].y = (float)PointArray[i].y;
    }

    //拟合当前轮廓
    cvFitEllipse(PointArray2D32f, count, box);

    //绘制当前轮廓
    cvDrawContours(image04, cont, CV_RGB(255, 255, 255), CV_RGB(255, 255, 255),
        0, 1, 8, cvPoint(0, 0));

    //将椭圆数据从浮点转化为整数表示
    center.x = cvRound(box->center.x);
    center.y = cvRound(box->center.y);
    size.width = cvRound(box->size.width*0.5);
    size.height = cvRound(box->size.height*0.5);
    box->angle = -box->angle;

    //画椭圆
    cvEllipse(image04, center, size, box->angle, 0, 360, CV_RGB(0, 0, 255), 1, CV_AA, 0);
}

未定义标识符 "CvBox2D32f"
    未定义标识符 "box"    
未定义标识符 "cvFitEllipse"   
这是报错信息

D:\opencv\opencv\build\include\opencv2
D:\opencv\opencv\build\include\opencv
D:\opencv\opencv\build\include
这是包含目录的配置
D:\opencv\opencv\build\x86\vc12\lib
D:\opencv\opencv\build\x86\vc12\staticlib
这是库目录的配置
opencv_ts300.lib
opencv_world300.lib
这是附加依赖项
我就配置了这几项
我用的是vs2015+opencv3.0

改成cvFitEllipse2（）就行了

#include "opencv2/legacy/compat.hpp"