部分opencv3转opencv4的函数切换问题

1.opencv/cv.h: 没有那个文件或目录

将opencv/cv.h:修改为

#include

2.‘CvMat’ has not been declared

添加头文件

#include

3.‘CV_REDUCE_SUM’ was not declared in this scope

添加头文件

#include

4.‘cvCreateMat’ was not declared in this scope;

等以下的报错
在这里插入图片描述
添加头文件

#include

或

#include

5. 编译DBoW2等出现"OpenCV > 2.4.3 not found."

make[2]: *** No rule to make target '../Thirdparty/DBoW2/lib/libDBoW2.so', needed by '../lib/libORB_SLAM2.so'

将CMakeLists.txt的opencv改称对应版本
6.‘CV_LOAD_IMAGE_UNCHANGED’ was not declared in this scope

修改为

cv::IMREAD_UNCHANGED

7. ‘CV_GRAY2BGR’ was not declared in this scope

修改方法为：将CV_BGR2GRAY改为cv::COLOR_BGR2GRAY
或者加入头文件

#include

8. error: ‘CV_CALIB_CB_ADAPTIVE_THRESH’ was not declared in this scope

#include

9.‘CV_AA’ was not declared in this scope

#include

10.‘CV_FONT_HERSHEY_SIMPLEX’ was not declared in this scope

修改方法：将CV_FONT_HERSHEY_SIMPLEX改为cv::FONT_HERSHEY_SIMPLEX
11. error: ‘CV_REDUCE_SUM’ was not declared in this scope

#include

12.error: static assertion failed: std::map must have the same value_type as its allocator

在loopClosing.h:50修改

typedef map                 g2o::Sim3,                  //值
                std::less,       //排序算法
                Eigen::aligned_allocator > // 指定分配器,和内存空间开辟有关. 为了能够使用Eigen库中的SSE和AVX指令集加速,需要将传统STL容器中的数据进行对齐处理
                > KeyFrameAndPose;

为

typedef map                 g2o::Sim3,                  //值
                std::less,       //排序算法
                Eigen::aligned_allocator > // 指定分配器,和内存空间开辟有关. 为了能够使用Eigen库中的SSE和AVX指令集加速,需要将传统STL容器中的数据进行对齐处理
                > KeyFrameAndPose;