| BaseOCR |  | 
| ERFilter | Base class for 1st and 2nd stages of Neumann and Matas scene text detection algorithm CITE: Neumann12. | 
| ERFilter_Callback | Callback with the classifier is made a class. | 
| OCRBeamSearchDecoder | OCRBeamSearchDecoder class provides an interface for OCR using Beam Search algorithm. | 
| OCRBeamSearchDecoder_ClassifierCallback | Callback with the character classifier is made a class. | 
| OCRHMMDecoder | OCRHMMDecoder class provides an interface for OCR using Hidden Markov Models. | 
| OCRHMMDecoder_ClassifierCallback | Callback with the character classifier is made a class. | 
| OCRTesseract | OCRTesseract class provides an interface with the tesseract-ocr API (v3.02.02) in C++. | 
| Text |  | 
| TextDetector | An abstract class providing interface for text detection algorithms | 
| TextDetectorCNN | TextDetectorCNN class provides the functionallity of text bounding box detection. |