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Merge pull request #3351 from bit1002lst:decode_multi_qrcodes
fix the bug that cannot detect multi qrcode when use_nn_detector is false
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modules/wechat_qrcode/samples/qrcode_example_without_nn.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| #include <iostream> | ||
| #include <opencv2/core.hpp> | ||
| #include <opencv2/highgui.hpp> | ||
| #include <opencv2/imgproc.hpp> | ||
|
|
||
| using namespace std; | ||
| using namespace cv; | ||
|
|
||
| #include <opencv2/wechat_qrcode.hpp> | ||
|
|
||
| int main(int argc, char* argv[]) { | ||
| cout << endl << argv[0] << endl << endl; | ||
| cout << "A demo program of WeChat QRCode Detector: " << endl; | ||
|
|
||
| Mat img; | ||
| int camIdx = -1; | ||
| if (argc > 1) { | ||
| bool live = strcmp(argv[1], "-camera") == 0; | ||
| if (live) { | ||
| camIdx = argc > 2 ? atoi(argv[2]) : 0; | ||
| } else { | ||
| img = imread(argv[1]); | ||
| } | ||
| } else { | ||
| cout << " Usage: " << argv[0] << " <input_image>" << endl; | ||
| return 0; | ||
| } | ||
| // The model is downloaded to ${CMAKE_BINARY_DIR}/downloads/wechat_qrcode if cmake runs without warnings, | ||
| // otherwise you can download them from https://github.com/WeChatCV/opencv_3rdparty/tree/wechat_qrcode. | ||
| Ptr<wechat_qrcode::WeChatQRCode> detector; | ||
|
|
||
| try { | ||
| detector = makePtr<wechat_qrcode::WeChatQRCode>("", "", "", ""); | ||
| } catch (const std::exception& e) { | ||
| cout << | ||
| "\n---------------------------------------------------------------\n" | ||
| "Failed to initialize WeChatQRCode.\n" | ||
| "---------------------------------------------------------------\n"; | ||
| cout << e.what() << endl; | ||
| return 0; | ||
| } | ||
| string prevstr = ""; | ||
| vector<Mat> points; | ||
|
|
||
| if (camIdx < 0) { | ||
| auto res = detector->detectAndDecode(img, points); | ||
| for (const auto& t : res) cout << t << endl; | ||
| } else { | ||
| VideoCapture cap(camIdx); | ||
| for(;;) { | ||
| cap >> img; | ||
| if (img.empty()) | ||
| break; | ||
| auto res = detector->detectAndDecode(img, points); | ||
| for (const auto& t : res) { | ||
| if (t != prevstr) | ||
| cout << t << endl; | ||
| } | ||
| if (!res.empty()) | ||
| prevstr = res.back(); | ||
| imshow("image", img); | ||
| if (waitKey(30) >= 0) | ||
| break; | ||
| } | ||
| } | ||
| return 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| import cv2 | ||
| import sys | ||
|
|
||
| print(sys.argv[0]) | ||
| print('A demo program of WeChat QRCode Detector:') | ||
| camIdx = -1 | ||
| if len(sys.argv) > 1: | ||
| if sys.argv[1] == "-camera": | ||
| camIdx = int(sys.argv[2]) if len(sys.argv)>2 else 0 | ||
| img = cv2.imread(sys.argv[1]) | ||
| else: | ||
| print(" Usage: " + sys.argv[0] + " <input_image>") | ||
| exit(0) | ||
|
|
||
| # For python API generator, it follows the template: {module_name}_{class_name}, | ||
| # so it is a little weird. | ||
| # The model is downloaded to ${CMAKE_BINARY_DIR}/downloads/wechat_qrcode if cmake runs without warnings, | ||
| # otherwise you can download them from https://github.com/WeChatCV/opencv_3rdparty/tree/wechat_qrcode. | ||
| try: | ||
| detector = cv2.wechat_qrcode_WeChatQRCode( | ||
| "", "", "", "") | ||
| except: | ||
| print("---------------------------------------------------------------") | ||
| print("Failed to initialize WeChatQRCode.") | ||
| print("---------------------------------------------------------------") | ||
| exit(0) | ||
|
|
||
| prevstr = "" | ||
|
|
||
| if camIdx < 0: | ||
| res, points = detector.detectAndDecode(img) | ||
| print(res,points) | ||
| else: | ||
| cap = cv2.VideoCapture(camIdx) | ||
| while True: | ||
| res, img = cap.read() | ||
| if img is None: | ||
| break | ||
| res, points = detector.detectAndDecode(img) | ||
| for t in res: | ||
| if t != prevstr: | ||
| print(t) | ||
| if res: | ||
| prevstr = res[-1] | ||
| cv2.imshow("image", img) | ||
| if cv2.waitKey(30) >= 0: | ||
| break | ||
| # When everything done, release the capture | ||
| cap.release() | ||
| cv2.destroyAllWindows() |
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