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字数制限の関係で一旦findContoursが出てくる箇所まで追記しました。またforやifに「宣言が必要です」と出てきています

2018/11/16 07:42

投稿

退会済みユーザー
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+ Mat img_gray;
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+ cv::cvtColor(input, img_gray, CV_BGR2GRAY);
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+ cv::blur(img_gray, img_gray, Size(5, 5));
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+ void Sobel(InputArray src, OutputArray dst, int ddepth, int xorder, int yorder, int ksize = 3, double scale = 1, double delta = 0, int borderType = BORDER_DEFFAULT);
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+ //Find vertical lines. Car plates have high density of vertical lines
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+ Mat img_sobel;
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+ Sobel(img_gray, img_sobel, CV_8U, 1, 0, 3, 1, 0);
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+ //threshold image
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+ Mat img_threshold;
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+ cv::threshold(img_sobel, img_threshold, 0, 255, CV_THRESH_OTSU + CV_THRESH_BINARY);
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+ Mat element = cv::getStructuringElement(MORPH_RECT, Size(17, 3));
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+ morphologyEx(img_threshold, img_threshold, CV_MOP_CLOSE, element);
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+ //Find contours of possibles plates
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+ vector<vector<Point>> contours;
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+ findContours(img_threshold, contours, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
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  ```
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