objective c - how to convert cv::Mat to json format in ios -

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-(void) processimage:(cv::mat &)image{      cvtcolor(image, img2, cv_bgr2gray);      orb -> detect(img2, keypoints1);      orb -> compute(img2, keypoints1, descriptors1);      drawkeypoints(img2, keypoints1, outimage);  }

outimage in cv::mat format. how convert nsdictionary format, using opencv orb algorithm project.


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