| // This file is part of OpenCV project. | |
| // It is subject to the license terms in the LICENSE file found in the top-level directory | |
| // of this distribution and at http://opencv.org/license.html. | |
| // Copyright (c) 2020-2021 darkliang wangberlinT Certseeds | |
| namespace cv { | |
| namespace barcode { | |
| //! @addtogroup objdetect_barcode | |
| //! @{ | |
| class CV_EXPORTS_W_SIMPLE BarcodeDetector : public cv::GraphicalCodeDetector | |
| { | |
| public: | |
| /** @brief Initialize the BarcodeDetector. | |
| */ | |
| CV_WRAP BarcodeDetector(); | |
| /** @brief Initialize the BarcodeDetector. | |
| * | |
| * Parameters allow to load _optional_ Super Resolution DNN model for better quality. | |
| * @param prototxt_path prototxt file path for the super resolution model | |
| * @param model_path model file path for the super resolution model | |
| */ | |
| CV_WRAP BarcodeDetector(CV_WRAP_FILE_PATH const std::string &prototxt_path, CV_WRAP_FILE_PATH const std::string &model_path); | |
| ~BarcodeDetector(); | |
| /** @brief Decodes barcode in image once it's found by the detect() method. | |
| * | |
| * @param img grayscale or color (BGR) image containing bar code. | |
| * @param points vector of rotated rectangle vertices found by detect() method (or some other algorithm). | |
| * For N detected barcodes, the dimensions of this array should be [N][4]. | |
| * Order of four points in vector<Point2f> is bottomLeft, topLeft, topRight, bottomRight. | |
| * @param decoded_info UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded. | |
| * @param decoded_type vector strings, specifies the type of these barcodes | |
| * @return true if at least one valid barcode have been found | |
| */ | |
| CV_WRAP bool decodeWithType(InputArray img, | |
| InputArray points, | |
| CV_OUT std::vector<std::string> &decoded_info, | |
| CV_OUT std::vector<std::string> &decoded_type) const; | |
| /** @brief Both detects and decodes barcode | |
| * @param img grayscale or color (BGR) image containing barcode. | |
| * @param decoded_info UTF8-encoded output vector of string(s) or empty vector of string if the codes cannot be decoded. | |
| * @param decoded_type vector of strings, specifies the type of these barcodes | |
| * @param points optional output vector of vertices of the found barcode rectangle. Will be empty if not found. | |
| * @return true if at least one valid barcode have been found | |
| */ | |
| CV_WRAP bool detectAndDecodeWithType(InputArray img, | |
| CV_OUT std::vector<std::string> &decoded_info, | |
| CV_OUT std::vector<std::string> &decoded_type, | |
| OutputArray points = noArray()) const; | |
| /** @brief Get detector downsampling threshold. | |
| * | |
| * @return detector downsampling threshold | |
| */ | |
| CV_WRAP double getDownsamplingThreshold() const; | |
| /** @brief Set detector downsampling threshold. | |
| * | |
| * By default, the detect method resizes the input image to this limit if the smallest image size is is greater than the threshold. | |
| * Increasing this value can improve detection accuracy and the number of results at the expense of performance. | |
| * Correlates with detector scales. Setting this to a large value will disable downsampling. | |
| * @param thresh downsampling limit to apply (default 512) | |
| * @see setDetectorScales | |
| */ | |
| CV_WRAP BarcodeDetector& setDownsamplingThreshold(double thresh); | |
| /** @brief Returns detector box filter sizes. | |
| * | |
| * @param sizes output parameter for returning the sizes. | |
| */ | |
| CV_WRAP void getDetectorScales(CV_OUT std::vector<float>& sizes) const; | |
| /** @brief Set detector box filter sizes. | |
| * | |
| * Adjusts the value and the number of box filters used in the detect step. | |
| * The filter sizes directly correlate with the expected line widths for a barcode. Corresponds to expected barcode distance. | |
| * If the downsampling limit is increased, filter sizes need to be adjusted in an inversely proportional way. | |
| * @param sizes box filter sizes, relative to minimum dimension of the image (default [0.01, 0.03, 0.06, 0.08]) | |
| */ | |
| CV_WRAP BarcodeDetector& setDetectorScales(const std::vector<float>& sizes); | |
| /** @brief Get detector gradient magnitude threshold. | |
| * | |
| * @return detector gradient magnitude threshold. | |
| */ | |
| CV_WRAP double getGradientThreshold() const; | |
| /** @brief Set detector gradient magnitude threshold. | |
| * | |
| * Sets the coherence threshold for detected bounding boxes. | |
| * Increasing this value will generate a closer fitted bounding box width and can reduce false-positives. | |
| * Values between 16 and 1024 generally work, while too high of a value will remove valid detections. | |
| * @param thresh gradient magnitude threshold (default 64). | |
| */ | |
| CV_WRAP BarcodeDetector& setGradientThreshold(double thresh); | |
| }; | |
| //! @} | |
| }} // cv::barcode:: | |