Class OCRBeamSearchDecoder


  • public class OCRBeamSearchDecoder
    extends BaseOCR
    OCRBeamSearchDecoder class provides an interface for OCR using Beam Search algorithm. Note:
    • (C++) An example on using OCRBeamSearchDecoder recognition combined with scene text detection can be found at the demo sample: <https://github.com/opencv/opencv_contrib/blob/master/modules/text/samples/word_recognition.cpp>
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected OCRBeamSearchDecoder​(long addr)  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static OCRBeamSearchDecoder __fromPtr__​(long addr)  
      static OCRBeamSearchDecoder create​(java.lang.String filename, java.lang.String vocabulary, Mat transition_probabilities_table, Mat emission_probabilities_table)
      Creates an instance of the OCRBeamSearchDecoder class.
      static OCRBeamSearchDecoder create​(java.lang.String filename, java.lang.String vocabulary, Mat transition_probabilities_table, Mat emission_probabilities_table, int mode)
      Creates an instance of the OCRBeamSearchDecoder class.
      static OCRBeamSearchDecoder create​(java.lang.String filename, java.lang.String vocabulary, Mat transition_probabilities_table, Mat emission_probabilities_table, int mode, int beam_size)
      Creates an instance of the OCRBeamSearchDecoder class.
      protected void finalize()  
      java.lang.String run​(Mat image, int min_confidence)
      Recognize text using Beam Search.
      java.lang.String run​(Mat image, int min_confidence, int component_level)
      Recognize text using Beam Search.
      java.lang.String run​(Mat image, Mat mask, int min_confidence)  
      java.lang.String run​(Mat image, Mat mask, int min_confidence, int component_level)  
      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • OCRBeamSearchDecoder

        protected OCRBeamSearchDecoder​(long addr)
    • Method Detail

      • create

        public static OCRBeamSearchDecoder create​(java.lang.String filename,
                                                  java.lang.String vocabulary,
                                                  Mat transition_probabilities_table,
                                                  Mat emission_probabilities_table,
                                                  int mode,
                                                  int beam_size)
        Creates an instance of the OCRBeamSearchDecoder class. Initializes HMMDecoder from the specified path.
        Parameters:
        filename - automatically generated
        vocabulary - automatically generated
        transition_probabilities_table - automatically generated
        emission_probabilities_table - automatically generated
        mode - automatically generated
        beam_size - automatically generated
        Returns:
        automatically generated
      • create

        public static OCRBeamSearchDecoder create​(java.lang.String filename,
                                                  java.lang.String vocabulary,
                                                  Mat transition_probabilities_table,
                                                  Mat emission_probabilities_table,
                                                  int mode)
        Creates an instance of the OCRBeamSearchDecoder class. Initializes HMMDecoder from the specified path.
        Parameters:
        filename - automatically generated
        vocabulary - automatically generated
        transition_probabilities_table - automatically generated
        emission_probabilities_table - automatically generated
        mode - automatically generated
        Returns:
        automatically generated
      • create

        public static OCRBeamSearchDecoder create​(java.lang.String filename,
                                                  java.lang.String vocabulary,
                                                  Mat transition_probabilities_table,
                                                  Mat emission_probabilities_table)
        Creates an instance of the OCRBeamSearchDecoder class. Initializes HMMDecoder from the specified path.
        Parameters:
        filename - automatically generated
        vocabulary - automatically generated
        transition_probabilities_table - automatically generated
        emission_probabilities_table - automatically generated
        Returns:
        automatically generated
      • run

        public java.lang.String run​(Mat image,
                                    Mat mask,
                                    int min_confidence,
                                    int component_level)
      • run

        public java.lang.String run​(Mat image,
                                    Mat mask,
                                    int min_confidence)
      • run

        public java.lang.String run​(Mat image,
                                    int min_confidence,
                                    int component_level)
        Recognize text using Beam Search. Takes image on input and returns recognized text in the output_text parameter. Optionally provides also the Rects for individual text elements found (e.g. words), and the list of those text elements with their confidence values.
        Parameters:
        image - Input binary image CV_8UC1 with a single text line (or word). text elements found (e.g. words). recognition of individual text elements found (e.g. words). for the recognition of individual text elements found (e.g. words).
        component_level - Only OCR_LEVEL_WORD is supported.
        min_confidence - automatically generated
        Returns:
        automatically generated
      • run

        public java.lang.String run​(Mat image,
                                    int min_confidence)
        Recognize text using Beam Search. Takes image on input and returns recognized text in the output_text parameter. Optionally provides also the Rects for individual text elements found (e.g. words), and the list of those text elements with their confidence values.
        Parameters:
        image - Input binary image CV_8UC1 with a single text line (or word). text elements found (e.g. words). recognition of individual text elements found (e.g. words). for the recognition of individual text elements found (e.g. words).
        min_confidence - automatically generated
        Returns:
        automatically generated
      • finalize

        protected void finalize()
                         throws java.lang.Throwable
        Overrides:
        finalize in class BaseOCR
        Throws:
        java.lang.Throwable