trainf_ocr_class_box — Train an OCR classifier with the help of a training file.
trainf_ocr_class_box is obsolete and is only provided for reasons of backward compatibility. New applications should use the MLP, SVM or CNN based operators instead.
The operator trainf_ocr_class_box trains the classifier OcrHandle via the indicated training files. Any number of files can be indicated. The parameter AvgConfidence provides information about the success of the training: It contains the average confidence of the trained characters measured by a re-classification. The confidence of mismatched characters is set to 0 (thus, the average confidence will be decreased significantly). Please, note that training characters that have no corresponding class in the classifier OcrHandle are discarded.
The names of the characters in the file must fit the network.
This operator modifies the state of the following input parameter:
ID of the desired OCR-network.
Names of the training files.
Default value: 'train_ocr'
File extension: .trf, .otr
Average confidence during a re-classification of the trained characters.
If the file name is correct and the data fit the network, the operator trainf_ocr_class_box returns the value 2 (H_MSG_TRUE). Otherwise an exception will be raised.
traind_ocr_class_box, write_ocr, do_ocr_multi, do_ocr_single