| OpenCV 4.3.0 Open Source Computer Vision

Classes | Namespaces | Enumerations | Functions
ocr.hpp File Reference
`#include <opencv2/core.hpp>`
`#include <vector>`
`#include <string>`

## Classes
class | cv::text::BaseOCR
class | cv::text::OCRBeamSearchDecoder::ClassifierCallback
| Callback with the character classifier is made a class. More...
class | cv::text::OCRHMMDecoder::ClassifierCallback
| Callback with the character classifier is made a class. More...
class | cv::text::OCRBeamSearchDecoder
| OCRBeamSearchDecoder class provides an interface for OCR using Beam Search algorithm. More...
class | cv::text::OCRHMMDecoder
| OCRHMMDecoder class provides an interface for OCR using Hidden Markov Models. More...
class | cv::text::OCRHolisticWordRecognizer
| OCRHolisticWordRecognizer class provides the functionallity of segmented wordspotting. Given a predefined vocabulary , a DictNet is employed to select the most probable word given an input image. More...
class | cv::text::OCRTesseract
| OCRTesseract class provides an interface with the tesseract-ocr API (v3.02.02) in C++. More...

## Namespaces
| cv
| "black box" representation of the file storage associated with a file on disk.
| cv::text

## Enumerations
enum | { cv::text::OCR_LEVEL_WORD, cv::text::OCR_LEVEL_TEXTLINE }
enum | cv::text::classifier_type { cv::text::OCR_KNN_CLASSIFIER = 0, cv::text::OCR_CNN_CLASSIFIER = 1 }
enum | cv::text::decoder_mode { cv::text::OCR_DECODER_VITERBI = 0 }
enum | cv::text::ocr_engine_mode { cv::text::OEM_TESSERACT_ONLY, cv::text::OEM_CUBE_ONLY, cv::text::OEM_TESSERACT_CUBE_COMBINED, cv::text::OEM_DEFAULT }
| Tesseract.OcrEngineMode Enumeration. More...
enum | cv::text::page_seg_mode { cv::text::PSM_OSD_ONLY, cv::text::PSM_AUTO_OSD, cv::text::PSM_AUTO_ONLY, cv::text::PSM_AUTO, cv::text::PSM_SINGLE_COLUMN, cv::text::PSM_SINGLE_BLOCK_VERT_TEXT, cv::text::PSM_SINGLE_BLOCK, cv::text::PSM_SINGLE_LINE, cv::text::PSM_SINGLE_WORD, cv::text::PSM_CIRCLE_WORD, cv::text::PSM_SINGLE_CHAR }
| Tesseract.PageSegMode Enumeration. More...

## Functions
void | cv::text::createOCRHMMTransitionsTable (std::string &vocabulary, std::vector< std::string > &lexicon, OutputArray transition_probabilities_table)
| Utility function to create a tailored language model transitions table from a given list of words (lexicon). More...
Mat | cv::text::createOCRHMMTransitionsTable (const String &vocabulary, std::vector< cv::String > &lexicon)
Ptr< OCRBeamSearchDecoder::ClassifierCallback > | cv::text::loadOCRBeamSearchClassifierCNN (const String &filename)
| Allow to implicitly load the default character classifier when creating an OCRBeamSearchDecoder object. More...
Ptr< OCRHMMDecoder::ClassifierCallback > | cv::text::loadOCRHMMClassifier (const String &filename, int classifier)
| Allow to implicitly load the default character classifier when creating an OCRHMMDecoder object. More...
Ptr< OCRHMMDecoder::ClassifierCallback > | cv::text::loadOCRHMMClassifierCNN (const String &filename)
| Allow to implicitly load the default character classifier when creating an OCRHMMDecoder object. More...
Ptr< OCRHMMDecoder::ClassifierCallback > | cv::text::loadOCRHMMClassifierNM (const String &filename)
| Allow to implicitly load the default character classifier when creating an OCRHMMDecoder object. More...