标签：opened rom map waitkey empty font unsigned amr long
使用opencv读取摄像头并且显示事出现此问题：
后来发现是图像为空时的错误，加入：
if(!frame.empty())
imshow("video",frame);
完整的代码：
int main()
{
/* unsigned char buf_show[1920*1080*3];
uint32_t addr_bar0;
unsigned char *bar0_map_base;
long int screensize = 0;
unsigned char *fbp = NULL;
unsigned char *ptail;
Mat MatRGB ;*/
VideoCapture cap(1);
if(!cap.isOpened())
printf("camre open failed!\n");
Mat frame;
namedWindow("video");
if(!frame.empty())
imshow("video",frame);
else
printf("image empty\n");
while(1)
{
cap>>frame;
if(!frame.empty())
imshow("video",frame);
else
printf("image empty\n");
if(waitKey(10)==27)
break;
}
cap.release();
opencv报错 error: (-215) size.width>0 && size.height>0 in function cv::imshow
标签：opened rom map waitkey empty font unsigned amr long
原文地址：https://www.cnblogs.com/xiaojianliu/p/9443874.html
