write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImagewrite_ocr_trainf_image (Operator)

Name

write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImagewrite_ocr_trainf_image — Write characters into a training file.

Signature

write_ocr_trainf_image(Character : : Class, TrainingFile : )

Description

The operator write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImageWriteOcrTrainfImagewrite_ocr_trainf_image is used to prepare the training with the operator trainf_ocr_class_mlptrainf_ocr_class_mlpTrainfOcrClassMlpTrainfOcrClassMlpTrainfOcrClassMlptrainf_ocr_class_mlp or trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvmTrainfOcrClassSvmtrainf_ocr_class_svm. Hereby regions, representing characters, including their gray values (region and pixel) and the corresponding class name will be written into a file. An arbitrary number of regions within one image is supported. For each character (region) in CharacterCharacterCharacterCharactercharactercharacter the corresponding class name must be specified in ClassClassClassClassclassValclass. If no file extension is specified in TrainingFileTrainingFileTrainingFileTrainingFiletrainingFiletraining_file the extension '.trf' is appended to the file name. In contrast to write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainfWriteOcrTrainfwrite_ocr_trainf one image per character is passed. The domain of this image defines the pixels which belong to the character. The file format can be defined by the parameter 'ocr_trainf_version'"ocr_trainf_version""ocr_trainf_version""ocr_trainf_version""ocr_trainf_version""ocr_trainf_version" of the operator set_systemset_systemSetSystemSetSystemSetSystemset_system.

Execution Information

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Processed without parallelization.

Parameters

CharacterCharacterCharacterCharactercharactercharacter (input_object) singlechannelimage(-array) → object (byte / uint2)

Characters to be trained.

ClassClassClassClassclassValclass (input_control) string(-array) → (string)

Class (name) of the characters.

TrainingFileTrainingFileTrainingFileTrainingFiletrainingFiletraining_file (input_control) filename.write → (string)

Name of the training file.

Default: 'train_ocr' "train_ocr" "train_ocr" "train_ocr" "train_ocr" "train_ocr"

File extension: .trf

Result

If the parameters are correct, the operator write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImageWriteOcrTrainfImagewrite_ocr_trainf_image returns the value 2 ( H_MSG_TRUE) . Otherwise an exception will be raised.

Possible Predecessors

thresholdthresholdThresholdThresholdThresholdthreshold, connectionconnectionConnectionConnectionConnectionconnection, read_ocr_trainfread_ocr_trainfReadOcrTrainfReadOcrTrainfReadOcrTrainfread_ocr_trainf

Possible Successors

trainf_ocr_class_mlptrainf_ocr_class_mlpTrainfOcrClassMlpTrainfOcrClassMlpTrainfOcrClassMlptrainf_ocr_class_mlp, trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvmTrainfOcrClassSvmtrainf_ocr_class_svm

Alternatives

write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainfWriteOcrTrainfwrite_ocr_trainf, append_ocr_trainfappend_ocr_trainfAppendOcrTrainfAppendOcrTrainfAppendOcrTrainfappend_ocr_trainf

Module

OCR/OCV

Operators