生成可执行文件后，运行报错
terminate called after throwing an instance of 'std::logic_error'
what(): basic_string::_M_construct null not valid
Aborted (core dumped)检查后发现opencv读取文件路径出错了。
修改读图方式
image = cv::imread("/home/houyiliang/Desktop/slambook2-master/ch5/imageBasics/ubuntu.png"); //cv::imread函数读取指定路径下的图像文章出处登录后可见！
已经登录？立即刷新
