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Dmitry Kurtaev
1c53fd3777
Consider QRCode ECI encoding #24426 ### Pull Request Readiness Checklist related: https://github.com/opencv/opencv/pull/24350#pullrequestreview-1661658421 1. Add `getEncoding` method to obtain ECI number 2. Add `detectAndDecodeBytes`, `decodeBytes`, `decodeBytesMulti`, `detectAndDecodeBytesMulti` methods in Python (return `bytes`) and Java (return `byte[]`) 3. Allow Python bytes to std::string conversion in general and add `encode(byte[] encoded_info, Mat qrcode)` in Java Python example with Kanji encoding: ```python img = cv.imread("test.png") detect = cv.QRCodeDetector() data, points, straight_qrcode = detect.detectAndDecodeBytes(img) print(data) print(detect.getEncoding(), cv.QRCodeEncoder_ECI_SHIFT_JIS) print(data.decode("shift-jis")) ``` ``` b'\x82\xb1\x82\xf1\x82\xc9\x82\xbf\x82\xcd\x90\xa2\x8aE' 20 20 こんにちは世界 ``` source: https://github.com/opencv/opencv/blob/ba4d6c859d21536f84e0328c16f4cc3e96bf3065/modules/objdetect/test/test_qrcode_encode.cpp#L332  See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [x] The feature is well documented and sample code can be built with the project CMake
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