视觉SLAM十四讲第二版第八讲实践出错

[weixin_43937379]

第二版和第一版的光流法程序及数据不一样。出错程序名是optical_fiow.cpp
cmake 没问题 make出错 有没有大神指点一下，感激不尽 下面是错误
[ 25%] Building CXX object CMakeFiles/optical_flow.dir/optical_flow.cpp.o
/home/wzf/slambook2/ch8/optical_flow.cpp: In function ‘void OpticalFlowSingleLevel(const cv::Mat&, const cv::Mat&, const std::vector<cv::KeyPoint>&, std::vector<cv::KeyPoint>&, std::vector<bool>&, bool, bool)’:
/home/wzf/slambook2/ch8/optical_flow.cpp:188:28: error: invalid initialization of reference of type ‘const cv::ParallelLoopBody&’ from expression of type ‘std::_Bind_helper<false, void (OpticalFlowTracker::*)(const cv::Range&), OpticalFlowTracker*, const std::_Placeholder<1>&>::type {aka std::_Bind<void (OpticalFlowTracker::*(OpticalFlowTracker*, std::_Placeholder<1>))(const cv::Range&)>}’
std::bind(&OpticalFlowTracker::calculateOpticalFlow, &tracker, placeholders::_1));
~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/local/include/opencv2/core.hpp:3165:0,
from /usr/local/include/opencv2/opencv.hpp:46,
from /home/wzf/slambook2/ch8/optical_flow.cpp:5:
/usr/local/include/opencv2/core/utility.hpp:356:17: note: in passing argument 2 of ‘void cv::parallel_for_(const cv::Range&, const cv::ParallelLoopBody&, double)’
CV_EXPORTS void parallel_for_(const Range& range, const ParallelLoopBody& body, double nstripes=-1.);
^~~~~~~~~~~~~

[明天-过后]

求问你解决了么？

[qq_35805977]

@赵4老师 ni zai gao xiao?

[赵4老师]

https://www.baidu.com/s?wd=invalid%20initialization%20of%20reference%20of%20type%20%E2%80%98const%20cv%3A%3AParallelLoopBody%26%E2%80%99

[Heu_yyj]

我也遇到这个问题了，想问问你是怎样解决的

[不拱地的猪]

高博士写的那本书的时候，opencv好像是3.3吧，现在都是4.5了，有些函数变化比较大，编译出现问题时可能得查看一下opencv 的api文档才行

[Lee_wis]

请问这个是需要opencv4版本的吗？

[爱三万里沿途]

把CM文件中的 opencv4改成3即可