error: 'create' is not a member of 'cv::Tracker'

Question

İn this 官方教程题目写错了。应该是什么原因？

Ptr<Tracker> tracker = Tracker::create( "KCF" );

这里是tracking.hpp的部分：

    @endcode
    of course, you can also add any additional methods of your choice. It should be pointed out,
    however, that it is not expected to have a constructor declared, as creation should be done via
    the corresponding createTracker() method.
   In src/tracker.cpp file add BOILERPLATE_CODE(name,classname) line to the body of
    Tracker::create() method you will find there, like :
@code
        Ptr<Tracker> Tracker::create( const String& trackerType )
        {
          BOILERPLATE_CODE("BOOSTING",TrackerBoosting);
          BOILERPLATE_CODE("MIL",TrackerMIL);
          return Ptr<Tracker>();
        }
@endcode
-   Finally, you should implement the function with signature :
@code
        Ptr<classname> classname::createTracker(const classname::Params &parameters){
            ...
        }
@endcode

我使用的是 3.2.0 版本。

Answer 1

您从 tracking.hpp 粘贴的代码不是实际代码，它只是文档中的示例代码。 tracking header file 中唯一相关的代码是：

#include <opencv2/tracking/tracker.hpp>
#include <opencv2/tracking/tldDataset.hpp>

因此，要查看您实际导入的内容，您需要查看 tracking/tracker.hpp 文件 (here)。

如果这样做，您会发现 Tracker class 声明中没有 static create 方法。该方法实际上已在 this commit. So, basically, you're right: the tutorial wasn't updated after the method was removed. You should report your issue 中删除给 opencv 团队。

话虽这么说，要使教程正常运行，您可能需要将未编译的行替换为：

Ptr<TrackerKCF> tracker = TrackerKCF::create();

这应该可以解决问题。

error: 'create' is not a member of 'cv::Tracker'

error: 'create' is not a member of 'cv::Tracker'

c++

opencv

tracking