c#调用python代码，实现读取npy的数据并显示图像

本例子实现的功能是：

       根据stat.npy、ops.npy两个npy文件的内容，显示图形

1. 用python代码实现读取两个文件，文件名为read_npy.py，代码如下：

import numpy as npdef read_npy_files(stat_file, ops_file):stat = np.load(stat_file, allow_pickle=True)ops = np.load(ops_file, allow_pickle=True).item()return stat, ops

2. 在c#代码里，先设置python环境，再得到两个数组，最后根据数组显示图像，c#代码如下：

 int ncells = 46;// 设置 Python 虚拟环境的路径string pathToVirtualEnv = @"D:\ProgramData\anaconda3\suite2p";Environment.SetEnvironmentVariable("PATH", pathToVirtualEnv, EnvironmentVariableTarget.Process);Environment.SetEnvironmentVariable("PYTHONHOME", pathToVirtualEnv, EnvironmentVariableTarget.Process);Environment.SetEnvironmentVariable("PYTHONPATH", $"{pathToVirtualEnv}\\Lib\\site-packages;{pathToVirtualEnv}\\Lib", EnvironmentVariableTarget.Process);// 设置 Python DLL 的路径Runtime.PythonDLL = @"D:\ProgramData\anaconda3\suite2p\python39.dll";PythonEngine.PythonHome = pathToVirtualEnv;PythonEngine.PythonPath = PythonEngine.PythonPath + ";" + Environment.GetEnvironmentVariable("PYTHONPATH", EnvironmentVariableTarget.Process);PythonEngine.Initialize();// 读取 .npy 文件dynamic read_npy = Py.Import("read_npy");using (Py.GIL()){var result = read_npy.read_npy_files("stat.npy", "ops.npy");var stat = result[0];var ops = result[1];int Ly = Convert.ToInt32(ops["Ly"].ToString());int Lx = Convert.ToInt32(ops["Lx"].ToString());// 创建一个空图像var im = np.zeros(new Shape(Ly, Lx));for (int n = 0; n < ncells; n++){var ypix = stat[n]["ypix"];var xpix = stat[n]["xpix"];var overlap = stat[n]["overlap"];for (int i = 0; i < (int)ypix.shape[0]; i++){if (!Convert.ToBoolean(overlap[i].ToString())){im[ypix[i].ToString(), xpix[i].ToString()] = n + 1;}}}// 将 NumSharp 的 NDArray 转换为 OpenCvSharp 的 Matfloat[] imData = im.astype(np.float32).ToArray<float>();Mat imMat = new Mat(Ly, Lx, MatType.CV_32F);imMat.SetArray(imData);// 显示图像Cv2.ImShow("Image", imMat);}// 关闭 Python 引擎PythonEngine.Shutdown();

3. 运行后的结果如下：

完整的代码如下：

https://download.csdn.net/download/orangapple/89598350