opencv - 将RGB转换为灰色OpenCV时发生 fatal error

Question

我是opencv的新手，我试图将RGB视频转换为灰度图像，但它始终会给出错误错误LNK2019:函数_wmain中引用了未解析的外部符号_cvCvtColor
请告诉我我做错了

#include "stdafx.h"
#include "highgui.h"
#include <stdio.h>
#include <cv.h>
#include <tchar.h>
#include <highgui.h>
#include <stdio.h>
#include <conio.h>
#include <opencv2/imgproc/imgproc.hpp>  // Gaussian Blur
#include <opencv2/core/core.hpp>        // Basic OpenCV structures (cv::Mat, Scalar)
#include <opencv2/highgui/highgui.hpp>

#include <iostream>
#include <conio.h>

using namespace cv;
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
    CvCapture* capture = 0;
    capture = cvCreateFileCapture( "video.avi" );
    if(!capture)
    {
        return -1;
    }
    IplImage *bgr_frame=cvQueryFrame(capture);//Init the video read
    double fps = cvGetCaptureProperty (capture,CV_CAP_PROP_FPS);

    CvSize size = cvSize((int)cvGetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH),(int)cvGetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT));
    CvVideoWriter *writer = cvCreateVideoWriter("izlaz.avi",CV_FOURCC_DEFAULT,fps,size);

    IplImage *grayScaleImage = cvCreateImage(size ,IPL_DEPTH_8U,1);

    while( (bgr_frame=cvQueryFrame(capture)) != NULL )
    {
        cvCvtColor(bgr_frame, grayScaleImage, CV_BGR2GRAY);
        cvWriteFrame( writer, grayScaleImage );
    }

    cvReleaseVideoWriter( &writer );
    cvReleaseCapture( &capture );
}

Answer 1

我添加了库imgproc。我正在使用opencv 2.3。对于此新闻

ALT + F7
配置属性->输入->其他依赖项->编辑
并复制此opencv_imgproc230.lib