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fanfuhan OpenCV 教學120 ~ opencv-120-二維碼檢測與識別 資料來源: https://fanfuhan.github.io/ https://fanfuhan.github.io/2019/05/25/opencv-120/ GITHUB:https://github.com/jash-git/fanfuhan_ML_OpenCV C++ #include #include using namespace cv; using namespace std; int main(int argc, char** argv) { Mat src = imread("D:/images/qrcode.png"); imshow("image", src); Mat gray, qrcode_roi; cvtColor(src, gray, COLOR_BGR2GRAY); QRCodeDetector qrcode_detector; vector pts; string detect_info; bool det_result = qrcode_detector.detect(gray, pts); if (det_result) { detect_info = qrcode_detector.decode(gray, pts, qrcode_roi); } vector< vector > contours; contours.push_back(pts); drawContours(src, contours, 0, Scalar(0, 0, 255), 2); putText(src, detect_info.c_str(), Point(20, 200), FONT_HERSHEY_SIMPLEX, 1.0, Scalar(0, 0, 255), 2, 8); printf("qrcode info %s \n", detect_info.c_str()); imshow("result", src); waitKey(0); return 0; } Python """ 二维码检测与识别 """ import cv2 as cv import numpy as np src = cv.imread("images/fanfan.jpg") cv.imshow("image", src) gray = cv.cvtColor(src, cv.COLOR_BGR2GRAY) qrcoder = cv.QRCodeDetector() codeinfo, points, straight_qrcode = qrcoder.detectAndDecode(gray) print(points) result = np.copy(src) cv.drawContours(result, [np.int32(points)], 0, (0, 0, 255), 2) print("qrcode : %s" % codeinfo) cv.imshow("result", result) code_roi = np.uint8(straight_qrcode) cv.namedWindow("qrcode roi", cv.WINDOW_NORMAL) cv.imshow("qrcode roi", code_roi) cv.waitKey(0) cv.destroyAllWindows()