QT C++ 调用 python 传递图片参数 mat numpy；C++传递图片参数到python模块处理

首先感谢网络的大佬分享的代码，让我也攻克了这一个问题，现在也把我的经验分享出来

C++代码在下面

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "Python.h"
//#include "numpy/arrayobject.h"
#include 
#include 
#include 
#include 
#include 

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
      ui->setupUi(this);

      using namespace std;

      PyObject *m_PyDict, *m_PyFooBar;    // for the references to all the functions
      PyObject* m_PyModule;               // for the reference to the Pyhton module

      Py_Initialize();
      PyRun_SimpleString("import sys");//  PySys_SetArgv(argc, (wchar_t**)argv);
      PyRun_SimpleString("sys.path.append('./')");
      PyObject *sys_path = PySys_GetObject("path");
      PyList_Append(sys_path, PyUnicode_FromString("."));//没懂

      import_array1(); // this macro is defined be NumPy and must be included
      m_PyModule = PyImport_ImportModule("cal_Back");
      if (m_PyModule != NULL)
      {
        m_PyDict = PyModule_GetDict(m_PyModule);                        // get dictionary of available items in the module
        m_PyFooBar = PyDict_GetItemString(m_PyDict, "foo_bar");        // grab the functions we are interested in
        if (m_PyFooBar != NULL)                                         // execute the function
        {
//主要代码功能区域
          cv::Mat img = cv::imread("C:/PythonDir/1.png");
          cv::Mat img1 = cv::imread("C:/PythonDir/2.png");
          img.convertTo(img, CV_8U);
          int r = img.rows;
          int c = img.cols;
          int chnl = img.channels();
          int nElem = r * c * chnl;//          // total number of elements (here it's an RGB image of size 640x480)
          uchar* m = new uchar[nElem];//          // create an array of apropriate datatype
          std::memcpy(m, img.data, nElem * sizeof(uchar));//          // copy the data from the cv::Mat object into the array
          npy_intp mdim[] = { r, c, chnl};          // the dimensions of the matrix
          PyObject *PyArray  = PyArray_SimpleNewFromData(3, mdim, NPY_UINT8, (void*) m);   //在这里没有通过
          r = img1.rows;
          c = img1.cols;
          chnl = img1.channels();
          nElem = r * c * chnl;
          uchar* m1 = new uchar[nElem];
          std::memcpy(m1, img1.data, nElem * sizeof(uchar));
          npy_intp mdim1[] = { r, c, chnl};
          PyObject *PyArray1  = PyArray_SimpleNewFromData(3, mdim1, NPY_UINT8, (void*) m1);//生成包含这个多维数组的PyObject对象，使用PyArray_SimpleNewFromData函数，第一个参数3表示维度，第二个为维度数组Dims,第三个参数指出数组的类型，第四个参数为数组
          PyObject *ArgArray = PyTuple_New(2);
          PyTuple_SetItem(ArgArray, 0, PyArray); //同样定义大小与Python函数参数个数一致的PyTuple对象
          PyTuple_SetItem(ArgArray, 1, PyArray1); //同样定义大小与Python函数参数个数一致的PyTuple对象
          PyObject_CallObject(m_PyFooBar, ArgArray);//调用函数，传入Numpy Array 对象。
//主要代码功能区域
        }
      }
      else
      {
        qDebug() << "Failed to load the Python module!" ;
        PyErr_Print();
      }
}

MainWindow::~MainWindow()
{
    delete ui;
}
python代码在下面
```python
import cv2
import numpy as np
def foo_bar(img, img1):
    # if img is not None:
        print("this is python world! shit changed ?")
        # if img is not None:
        # img=cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        print(img.shape)
        print("hello python !!!!!")
        print(img.dtype)
        print("end image dtype")
        print(img[0])
        # print(img[1])
        # cv2.normalize(img, None, 0, 255, cv2.NORM_MINMAX, cv2.CV_8U)  
        # img = cv2.normalize(img, None, 0, 255, cv2.NORM_MINMAX, cv2.CV_8U)
        print(img.dtype)
        # img = cv2.convertScaleAbs(img)
        # img = img.astype(np.uint8)
        print(img.dtype)
        print("qiqiguaiguai")
        cv2.namedWindow('image in python', 0)
        # cv2.resizeWindow('image in python', 500, 500)
        print(img.shape)

        cv2.imshow("image in python", img)
        cv2.imshow("image in python1", img1)
        # cv2.imshow("image in python1", img1)       
        # cv2.imwrite("/home/tt/test/111.png", img)
        cv2.waitKey(0)
if __name__=='__main__':
    image = cv2.imread("C:/PythonDir/1.png")
    image1 = cv2.imread("C:/PythonDir/2.png")   
    print("ddddddd")
    foo_bar(image, image1)

遇到的问题：

1、网络上看到//#include “numpy/arrayobject.h”，其实根本没有找到，可以看我另一个博客
2、 import_array1();这个一共有3个，在QT里面点击F2找到合适自己的哪一个
3、PyArray_SimpleNewFromData(3, mdim1, NPY_UINT8, (void*) m1);这里一定要注意是什么意思，理解了就明白了，这里蒋图片处理成3个维度，8位（！！！！！！一定注意，不能是32或者64或者16，如果是，就自己再弄一下）