iPhone上的OpenCV项目 - opencv.hpp建设问题

#include <opencv2/opencv.hpp>
#include <iostream>

int main() {
    // 使用OpenCV相关功能
    cv::Mat image = cv::imread("sample_image.jpg");
    if (image.empty()) {
        std::cout << "Could not read the image." << std::endl;
        return 1;
    }

    // 示例：绘制矩形
    cv::Mat gray_image;
    cv::cvtColor(image, gray_image, cv::COLOR_BGR2GRAY);

    cv::Mat mask;
    cv::rectangle(gray_image, cv::Point(10, 10), cv::Point(20, 20), cv::Scalar(0, 0, 255), 2);

    cv::threshold(gray_image, mask, 128, 255, cv::THRESH_BINARY);

    // 显示结果
    std::cout << "Original image: " << std::endl;
    cv::imshow("Original image", image);

    std::cout << "Gray image: " << std::endl;
    cv::imshow("Gray image", gray_image);

    std::cout << "Mask: " << std::endl;
    cv::imshow("Mask", mask);

    cv::waitKey(0);
    return 0;
}