write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImage (Operator)

Name

write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImage — Write characters into a training file.

Signature

write_ocr_trainf_image(Character : : Class, TrainingFile : )

Description

The operator write_ocr_trainf_imagewrite_ocr_trainf_imageWriteOcrTrainfImageWriteOcrTrainfImageWriteOcrTrainfImage is used to prepare the training with the operator trainf_ocr_class_mlptrainf_ocr_class_mlpTrainfOcrClassMlpTrainfOcrClassMlpTrainfOcrClassMlp or trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvmTrainfOcrClassSvm. 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 CharacterCharacterCharacterCharactercharacter the corresponding class name must be specified in ClassClassClassClassclassVal. If no file extension is specified in TrainingFileTrainingFileTrainingFileTrainingFiletrainingFile the extension '.trf' is appended to the file name. In contrast to write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainfWriteOcrTrainf 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" of the operator set_systemset_systemSetSystemSetSystemSetSystem.

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

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

Characters to be trained.

ClassClassClassClassclassVal (input_control) string(-array) → (string)

Class (name) of the characters.

TrainingFileTrainingFileTrainingFileTrainingFiletrainingFile (input_control) filename.write → (string)

Name of the training file.

Default value: '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_imageWriteOcrTrainfImageWriteOcrTrainfImageWriteOcrTrainfImage returns the value 2 (H_MSG_TRUE). Otherwise an exception will be raised.

Possible Predecessors

thresholdthresholdThresholdThresholdThreshold, connectionconnectionConnectionConnectionConnection, read_ocr_trainfread_ocr_trainfReadOcrTrainfReadOcrTrainfReadOcrTrainf

Possible Successors

trainf_ocr_class_mlptrainf_ocr_class_mlpTrainfOcrClassMlpTrainfOcrClassMlpTrainfOcrClassMlp, trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvmTrainfOcrClassSvm

Alternatives

write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainfWriteOcrTrainf, append_ocr_trainfappend_ocr_trainfAppendOcrTrainfAppendOcrTrainfAppendOcrTrainf

Module

OCR/OCV

Operators