两次定义cv::Met image分别在哪

非抱歉，我之前给出回答有误。在的代码中，确实存在两次 `cv::Mat image` 的错误。

请删除其中一行 `cv::Mat image = cv::imread("path/to/your/image.jpg", cv::IMREAD_GRAYSCALE);`，只保留一行即可。您可以根据您的实际需求选择保留哪一行。

以下是修改后的代码：

#include <string>
#include "resource.h"
#include <opencv2/opencv.hpp>
#include <opencv2/core.hpp>
#include <zxing/DecodeHints.h>
#include <zxing/MultiFormatReader.h>
#include <zxing/Result.h>
#include <zxing/BinaryBitmap.h>
#include <zxing/common/GlobalHistogramBinarizer.h>

using namespace zxing;
using namespace std;

class OpenCVLuminanceSource : public zxing::LuminanceSource {
private:
    cv::Mat image_;

public:
    OpenCVLuminanceSource(cv::Mat image) : LuminanceSource(image.cols, image.rows), image_(image) {}

    zxing::ArrayRef<char> getRow(int y, zxing::ArrayRef<char> row) const {
        int width = getWidth();
        if (!row || row->size() < width) {
            row = zxing::ArrayRef<char>(width);
        }
        const uchar* imgRow = image_.ptr<uchar>(y);
        memcpy(&row[0], imgRow, width);
        return row;
    }

    zxing::ArrayRef<char> getMatrix() const {
        int width = getWidth();
        int height = getHeight();
        zxing::ArrayRef<char> matrix = zxing::ArrayRef<char>(width * height);
        for (int y = 0; y < height; ++y) {
            const uchar* imgRow = image_.ptr<uchar>(y);
            memcpy(&matrix[y * width], imgRow, width);
        }
        return matrix;
    }
};

int main()
{
    cv::Mat image = cv::imread("path/to/your/image.jpg", cv::IMREAD_GRAYSCALE);
    OpenCVLuminanceSource source(image);
    zxing::Ref<zxing::LuminanceSource> luminanceSource(&source);
    zxing::Ref<zxing::Binarizer> binarizer = zxing::Binarizer::createBinarizer(luminanceSource);
    zxing::Ref<zxing::BinaryBitmap> bitmap = zxing::Ref<zxing::BinaryBitmap>(new zxing::BinaryBitmap(binarizer));

    zxing::DecodeHints hints;
    hints.setTryHarder(true);

    zxing::MultiFormatReader reader;
    zxing::Ref<zxing::Result> result = reader.decode(bitmap, hints);

    std::string decodedData = result->getText()->getText();
    std::cout << "Decoded data: " << decodedData << std::endl;

    return 0;
}

请将 `"path/to/your/image.jpg"` 替换为您实际图像的路径。如果您有任何其他问题，请随时提问。