问使用opencv去除水印

EN

#include <stdio.h>
#include <opencv2/opencv.hpp>
#include <Windows.h>
#include <string>
#include <filesystem>

namespace fs = std::filesystem;

using namespace std;
using namespace cv;

int main(int argc, char** argv)
{
bool debugFlag = true;
std::string path = "C:/test/";
for (const auto& entry : fs::directory_iterator(path))
{
    std::string  fileName = entry.path().string();
    Mat original = imread(fileName, cv::IMREAD_COLOR);
    if (debugFlag) { imshow("original", original); }
    Mat inverted;
    bitwise_not(original, inverted);
    std::vector<Mat> channels;
    split(inverted, channels);

    for (int i = 0; i < 3; i++)
    {
        if (debugFlag) { imshow("chan" + std::to_string(i), channels[i]); }
    }

    Mat bwImg;
    cv::threshold(channels[2], bwImg, 50, 255, cv::THRESH_BINARY);
    if (debugFlag) { imshow("thresh", bwImg); }

    Mat outputImg;
    inverted.copyTo(outputImg, bwImg);

    bitwise_not(outputImg, outputImg);
    if (debugFlag) { imshow("output", outputImg); }

    if (debugFlag) { waitKey(0); }
    else { imwrite(fileName, outputImg); }
}
}