我正在尝试使用 OpenCv 2.4.5 从边缘找到渐变方向,但我遇到了 cvSobel() 问题,下面是错误消息和我的代码。我在某处读到这可能是由于浮点(??)之间的转换,但我不知道如何修复它。有什么帮助吗??
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2\opencv.hpp>
#include <opencv2\calib3d\calib3d.hpp>
#include <iostream>
#include <stdlib.h>
#include "stdio.h"
using namespace cv;
using namespace std;
int main()
{
Mat im = imread("test1.jpg");
if (im.empty()) {
cout << "Cannot load image!" << endl;
}
Mat *dx, *dy;
dx = new Mat( Mat::zeros(im.rows, im.cols, 1));
dy = new Mat( Mat::zeros(im.rows, im.cols, 1));
imshow("Image", im);
// Convert Image to gray scale
Mat im_gray;
cvtColor(im, im_gray, CV_RGB2GRAY);
imshow("Gray", im_gray);
//trying to find the direction, but gives errors here
cvSobel(&im_gray, dx, 1,0,3);
waitKey(0);
return 0;
}