[英]Runtime error with OpenCV and MinGW?
我正在尝试在OpenCV的文档中运行以下示例
#include <iostream>
#include <opencv2\core\core.hpp>
#include <opencv2\highgui\highgui.hpp>
#include <opencv\cv.h>
int main(int argc, char **argv)
{
cv::VideoCapture cap(0);
if ( !cap.isOpened())
{
std::cout << "Error with opening Camera" << std::endl;
return -1;
}
cv::Mat frame, edges;
cv::namedWindow("edges", 1);
for(;;)
{
cap >> frame;
cvtColor(frame, edges, CV_BGR2GRAY);
GaussianBlur(edges, edges, cv::Size(7,7), 1.5, 1.5);
Canny(edges, edges, 0, 30, 3);
cv::imshow("edges", edges);
if ( cv::waitKey(30) >= 0) break;
}
return 0;
}
我有if statement
来检查Camera是否有任何问题,它应该终止程序,但事实并非如此。 这是我得到的错误
OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cvtColor, file C:\opencv_2_4_8\opencv\sources\modules\imgproc\src\color.cpp, line 3737
terminate called after throwing an instance of 'cv::Exception'
what(): C:\opencv_2_4_8\opencv\sources\modules\imgproc\src\color.cpp:3737: error: (-215) scn == 3 || scn == 4 in function cvtColor
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
通过查看“ color.cpp”中的OpenCV代码,看起来错误中提到的变量“ scn”是帧的通道数,并且转换类型(BGR->灰度)要求为3或4渠道:
断言失败(scn == 3 || scn == 4)
您确定默认情况下相机不提供灰度图像吗? 尝试注释掉处理框架的行,并仅显示检索到的图像,然后看看您得到了什么。 还是仅在捕获帧之后放置一个断点并检查“ frame”变量-它是否为空? 它具有预期的尺寸等吗?
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.