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Merge pull request #24364 from bagelbytes61:bugfix/qrcode-version-estimator
Bugfix/qrcode version estimator #24364 Fixes https://github.com/opencv/opencv/issues/24366 ### Pull Request Readiness Checklist 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
This commit is contained in:
Jeremy Lyda
GitHub
parent
8c10545d3c
commit
fad0dbb9ac
@ -196,17 +196,18 @@ protected:
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uint8_t total_num;
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vector<Mat> final_qrcodes;
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Ptr<VersionInfo> version_info;
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Ptr<BlockParams> cur_ecc_params;
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const VersionInfo* version_info;
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const BlockParams* cur_ecc_params;
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bool isNumeric(const std::string& input);
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bool isAlphaNumeric(const std::string& input);
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bool isNumeric(const std::string& input) const;
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bool isAlphaNumeric(const std::string& input) const;
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EncodeMode autoEncodeMode(const std::string &input) const ;
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bool encodeByte(const std::string& input, vector<uint8_t> &output);
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bool encodeAlpha(const std::string& input, vector<uint8_t> &output);
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bool encodeNumeric(const std::string& input, vector<uint8_t> &output);
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bool encodeECI(const std::string& input, vector<uint8_t> &output);
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bool encodeKanji(const std::string& input, vector<uint8_t> &output);
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bool encodeAuto(const std::string& input, vector<uint8_t> &output);
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bool encodeAuto(const std::string& input, vector<uint8_t> &output, EncodeMode *mode = nullptr);
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bool encodeStructure(const std::string& input, vector<uint8_t> &output);
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int eccLevelToCode(CorrectionLevel level);
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void padBitStream();
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@ -222,9 +223,9 @@ protected:
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void fillReserved(const vector<uint8_t> &format_array, Mat &masked);
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void maskData(const int mask_type_num, Mat &masked);
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void findAutoMaskType();
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bool estimateVersion(const int input_length, vector<int> &possible_version);
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bool estimateVersion(const int input_length, EncodeMode mode, vector<int> &possible_version);
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int versionAuto(const std::string &input_str);
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int findVersionCapacity(const int input_length, const int ecc, const int version_begin, const int version_end);
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int findVersionCapacity(const int input_length, const int ecc, const std::vector<int>& possible_versions);
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void generatingProcess(const std::string& input, Mat &qrcode);
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void generateQR(const std::string& input);
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};
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@ -247,17 +248,17 @@ int QRCodeEncoderImpl::eccLevelToCode(CorrectionLevel level)
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"CORRECT_LEVEL_L, CORRECT_LEVEL_M, CORRECT_LEVEL_Q, CORRECT_LEVEL_H." );
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}
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int QRCodeEncoderImpl::findVersionCapacity(const int input_length, const int ecc, const int version_begin, const int version_end)
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int QRCodeEncoderImpl::findVersionCapacity(const int input_length, const int ecc, const std::vector<int>& possible_versions)
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{
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int data_codewords, version_index = -1;
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const int byte_len = 8;
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version_index = -1;
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for (int i = version_begin; i < version_end; i++)
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for (int i : possible_versions)
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{
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Ptr<BlockParams> tmp_ecc_params = makePtr<BlockParams>(version_info_database[i].ecc[ecc]);
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data_codewords = tmp_ecc_params->data_codewords_in_G1 * tmp_ecc_params->num_blocks_in_G1 +
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tmp_ecc_params->data_codewords_in_G2 * tmp_ecc_params->num_blocks_in_G2;
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auto& tmp_ecc_params = version_info_database[i].ecc[ecc];
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data_codewords = tmp_ecc_params.data_codewords_in_G1 * tmp_ecc_params.num_blocks_in_G1 +
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tmp_ecc_params.data_codewords_in_G2 * tmp_ecc_params.num_blocks_in_G2;
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if (data_codewords * byte_len >= input_length)
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{
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@ -268,53 +269,70 @@ int QRCodeEncoderImpl::findVersionCapacity(const int input_length, const int ecc
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return version_index;
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}
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bool QRCodeEncoderImpl::estimateVersion(const int input_length, vector<int>& possible_version)
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static inline int getCapacity(int version, QRCodeEncoder::CorrectionLevel ecc_level, QRCodeEncoder::EncodeMode mode) {
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const int* capacity = version_capacity_database[version].ec_level[ecc_level].encoding_modes;
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switch (mode) {
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case QRCodeEncoder::EncodeMode::MODE_NUMERIC:
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return capacity[0];
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case QRCodeEncoder::EncodeMode::MODE_ALPHANUMERIC:
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return capacity[1];
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case QRCodeEncoder::EncodeMode::MODE_BYTE:
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return capacity[2];
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case QRCodeEncoder::EncodeMode::MODE_KANJI:
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return capacity[3];
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default:
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CV_Error(Error::StsNotImplemented, format("Unexpected mode %d", mode));
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}
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}
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bool QRCodeEncoderImpl::estimateVersion(const int input_length, EncodeMode mode, vector<int>& possible_version)
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{
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possible_version.clear();
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if (input_length > version_capacity_database[40].ec_level[ecc_level].encoding_modes[1])
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CV_Assert(mode != EncodeMode::MODE_AUTO);
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if (input_length > getCapacity(MAX_VERSION, ecc_level, mode))
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{
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return false;
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if (input_length <= version_capacity_database[9].ec_level[ecc_level].encoding_modes[3])
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{
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possible_version.push_back(1);
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}
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else if (input_length <= version_capacity_database[9].ec_level[ecc_level].encoding_modes[1])
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int version = MAX_VERSION;
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for (; version > 0; --version)
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{
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possible_version.push_back(1);
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possible_version.push_back(2);
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if (input_length > getCapacity(version, ecc_level, mode)) {
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break;
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}
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}
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else if (input_length <= version_capacity_database[26].ec_level[ecc_level].encoding_modes[3])
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if (version < MAX_VERSION)
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{
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possible_version.push_back(2);
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version += 1;
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}
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else if (input_length <= version_capacity_database[26].ec_level[ecc_level].encoding_modes[1])
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possible_version.push_back(version);
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if (version < MAX_VERSION)
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{
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possible_version.push_back(2);
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possible_version.push_back(3);
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}
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else
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{
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possible_version.push_back(3);
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possible_version.push_back(version + 1);
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}
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return true;
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}
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int QRCodeEncoderImpl::versionAuto(const std::string& input_str)
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{
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vector<int> possible_version;
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estimateVersion((int)input_str.length(), possible_version);
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int tmp_version = 0;
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vector<uint8_t> payload_tmp;
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int version_range[5] = {0, 1, 10, 27, 41};
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for(size_t i = 0; i < possible_version.size(); i++)
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{
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int version_range_index = possible_version[i];
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EncodeMode mode;
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encodeAuto(input_str, payload_tmp, &mode);
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encodeAuto(input_str, payload_tmp);
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tmp_version = findVersionCapacity((int)payload_tmp.size(), ecc_level,
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version_range[version_range_index], version_range[version_range_index + 1]);
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if(tmp_version != -1)
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break;
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vector<int> possible_version;
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if (!estimateVersion((int)input_str.length(), mode, possible_version)) {
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return -1;
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}
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const auto tmp_version = findVersionCapacity((int)payload_tmp.size(), ecc_level, possible_version);
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return tmp_version;
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}
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@ -342,20 +360,23 @@ void QRCodeEncoderImpl::generateQR(const std::string &input)
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std::string input_info = input.substr(segment_begin, segment_end);
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string_itr += segment_end;
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int detected_version = versionAuto(input_info);
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CV_Assert(detected_version != -1);
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if (version_level == 0)
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version_level = detected_version;
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else if (version_level < detected_version)
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int tmp_version_level = version_level;
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if (detected_version == -1)
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CV_Error(Error::StsBadArg, "The given input exceeds the maximum capacity of a QR code with the selected encoding mode and error correction level " );
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else if (tmp_version_level == 0)
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tmp_version_level = detected_version;
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else if (tmp_version_level < detected_version)
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CV_Error(Error::StsBadArg, "The given version is not suitable for the given input string length ");
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payload.clear();
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payload.reserve(MAX_PAYLOAD_LEN);
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format = vector<uint8_t> (15, 255);
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version_reserved = vector<uint8_t> (18, 255);
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version_size = (21 + (version_level - 1) * 4);
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version_info = makePtr<VersionInfo>(version_info_database[version_level]);
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cur_ecc_params = makePtr<BlockParams>(version_info->ecc[ecc_level]);
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version_size = (21 + (tmp_version_level - 1) * 4);
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version_info = &version_info_database[tmp_version_level];
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cur_ecc_params = &version_info->ecc[ecc_level];
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original = Mat(Size(version_size, version_size), CV_8UC1, Scalar(255));
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masked_data = original.clone();
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Mat qrcode = masked_data.clone();
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@ -613,7 +634,7 @@ bool QRCodeEncoderImpl::encodeStructure(const std::string& input, vector<uint8_t
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return encodeAuto(input, output);
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}
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bool QRCodeEncoderImpl::isNumeric(const std::string& input)
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bool QRCodeEncoderImpl::isNumeric(const std::string& input) const
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{
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for (size_t i = 0; i < input.length(); i++)
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{
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@ -623,7 +644,7 @@ bool QRCodeEncoderImpl::isNumeric(const std::string& input)
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return true;
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}
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bool QRCodeEncoderImpl::isAlphaNumeric(const std::string& input)
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bool QRCodeEncoderImpl::isAlphaNumeric(const std::string& input) const
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{
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for (size_t i = 0; i < input.length(); i++)
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{
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@ -633,14 +654,56 @@ bool QRCodeEncoderImpl::isAlphaNumeric(const std::string& input)
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return true;
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}
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bool QRCodeEncoderImpl::encodeAuto(const std::string& input, vector<uint8_t>& output)
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QRCodeEncoder::EncodeMode QRCodeEncoderImpl::autoEncodeMode(const std::string &input) const
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{
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if (isNumeric(input))
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encodeNumeric(input, output);
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else if (isAlphaNumeric(input))
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encodeAlpha(input, output);
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else
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encodeByte(input, output);
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{
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return EncodeMode::MODE_NUMERIC;
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}
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if (isAlphaNumeric(input))
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{
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return EncodeMode::MODE_ALPHANUMERIC;
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}
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return EncodeMode::MODE_BYTE;
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}
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bool QRCodeEncoderImpl::encodeAuto(const std::string& input, vector<uint8_t>& output, EncodeMode *mode)
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{
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const auto selected_mode = autoEncodeMode(input);
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CV_Assert(selected_mode != EncodeMode::MODE_AUTO);
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switch (selected_mode)
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{
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case EncodeMode::MODE_NUMERIC:
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encodeNumeric(input, output);
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break;
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case EncodeMode::MODE_ALPHANUMERIC:
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encodeAlpha(input, output);
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break;
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case EncodeMode::MODE_STRUCTURED_APPEND:
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encodeByte(input, output);
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break;
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case EncodeMode::MODE_BYTE:
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encodeByte(input, output);
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break;
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case EncodeMode::MODE_KANJI:
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encodeKanji(input, output);
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break;
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case EncodeMode::MODE_ECI:
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encodeECI(input, output);
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break;
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default:
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break;
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}
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if (mode != nullptr)
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{
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*mode = selected_mode;
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}
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return true;
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}
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@ -548,4 +548,22 @@ TEST(Objdetect_QRCode_Encode_Decode, regression_issue22029)
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}
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}
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// This test reproduces issue https://github.com/opencv/opencv/issues/24366 only in a loop
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TEST(Objdetect_QRCode_Encode_Decode, auto_version_pick)
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{
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cv::QRCodeEncoder::Params params;
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params.correction_level = cv::QRCodeEncoder::CORRECT_LEVEL_L;
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params.mode = cv::QRCodeEncoder::EncodeMode::MODE_AUTO;
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cv::Ptr<cv::QRCodeEncoder> encoder = cv::QRCodeEncoder::create(params);
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for (int len = 1; len < 19; len++) {
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std::string input;
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input.resize(len);
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cv::randu(Mat(1, len, CV_8U, &input[0]), 'a', 'z' + 1);
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cv::Mat qrcode;
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encoder->encode(input, qrcode);
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}
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}
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}} // namespace
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