安装下载并配置好opencv环境https://blog.csdn.net/weixin_39875161/article/details/92005225#%E4%BA%8C%E3%80%81%E5%AE%89%E8%A3%85C%2FC%2B%2B%E6%8F%92%E4%BB%B6示例cpp代码如下，命名为opencvcall.cpp #include <opencv2/opencv.hpp>
using namespace cv;
extern "C"
{
void test(int height, int width, uchar* frame_data)
{
int count = 0;
Mat image(height, width, CV_8UC3);
uchar* pxvec =image.ptr<uchar>(0);
for(int row = 0; row < height; row++)
{
pxvec = image.ptr<uchar>(row);
for(int col = 0; col < width; col++)
{
for(int c = 0; c < 3; c++)
{
pxvec[col*3+c] = frame_data[count];
count++;
}
}
}
imshow("result", image);
waitKey(0);
return;
}
}
编写cmake文件，命名为CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
project(test )
find_package( OpenCV REQUIRED )
add_library(test SHARED opencvcall.cpp)
target_link_libraries( test ${OpenCV_LIBS} )
在文件目录下打开终端，执行
cmake .
make
调用编译成功的c++程序，运行下列程序测试是否成功
import cv2
import ctypes
import numpy as np
ll = ctypes.cdll.LoadLibrary
lib = ll("./libtest.so")
lib.test.restype = ctypes.c_float
frame = cv2.imread('1.jpg')
frame_data = np.asarray(frame, dtype=np.uint8)
frame_data = frame_data.ctypes.data_as(ctypes.c_char_p)
lib.test(frame.shape[0], frame.shape[1], frame_data)
