43 lines
869 B
C++
43 lines
869 B
C++
#include <iostream>
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#include "opencv2/opencv.hpp"
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using namespace cv;
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using namespace std;
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void on_trackbar(int pos, void* userdata);
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int main(int argc, char* argv[]) {
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Mat src;
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if (argc < 2)
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src = imread("../../resources/images/sudoku.jpg", IMREAD_GRAYSCALE);
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else
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src = imread(argv[1], IMREAD_GRAYSCALE);
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if (src.empty()) {
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cerr << "Image load failed!" << endl;
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return -1;
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}
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imshow("src", src);
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namedWindow("dst");
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createTrackbar("Block size", "dst", 0, 200, on_trackbar, (void*)&src);
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setTrackbarPos("Block size", "dst", 11);
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cv::waitKey();
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cv::destroyAllWindows();
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}
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void on_trackbar(int pos, void* userdata) {
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Mat src = *(Mat*)userdata;
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int bsize = pos;
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if (bsize % 2 == 0) bsize--;
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if (bsize < 3) bsize = 3;
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Mat dst;
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adaptiveThreshold(src, dst, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, bsize, 5);
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imshow("dst", dst);
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} |