Name
write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainf — Storing of training characters into a file.
The operator write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainf serves to prepare
the training with the operator trainf_ocr_class_mlptrainf_ocr_class_mlpTrainfOcrClassMlptrainf_ocr_class_mlpTrainfOcrClassMlpTrainfOcrClassMlp,
trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvm, or trainf_ocr_class_boxtrainf_ocr_class_boxTrainfOcrClassBoxtrainf_ocr_class_boxTrainfOcrClassBoxTrainfOcrClassBox.
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 ClassClassClassClassClassclassVal.
The gray values are passed via the parameter ImageImageImageImageImageimage.
If no file extension is specified in TrainingFileTrainingFileTrainingFileTrainingFileTrainingFiletrainingFile the extension
'.trf' is appended to the file name. The version of the file format
used for writing data 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_systemSetSystemset_systemSetSystemSetSystem.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Characters to be trained.
Gray values of the characters.
Class (name) of the characters.
Name of the training file.
Default value:
'train_ocr'
"train_ocr"
"train_ocr"
"train_ocr"
"train_ocr"
"train_ocr"
File extension: .trf
char name[128];
HTuple Class,Name;
read_image(&Image,"character.tiff");
binary_threshold(Image,&Dark, 'otsu', 'dark', &UsedThreshold);
connection(Dark,&Character);
count_obj(Character,&num);
create_tuple(&Class,num);
open_window(0,0,-1,-1,0,"","",&WindowHandle);
set_color(WindowHandle,"red");
for (i=0; i<num; i++) {
select_obj(Character,&SingleCharacter,i);
clear_window(WindowHandle);
disp_region(SingleCharacter,WindowHandle);
printf("class of character %d ?\n",i);
scanf("%s\n",name);
set_s(Class,name,i);
}
create_tuple(&Name,1);
set_s(Class,Name,"trainfile");
T_write_ocr_trainf(Character,Image,Class,Name);
If the parameters are correct, the operator
write_ocr_trainfwrite_ocr_trainfWriteOcrTrainfwrite_ocr_trainfWriteOcrTrainfWriteOcrTrainf returns the value 2 (H_MSG_TRUE).
Otherwise an exception will be raised.
thresholdthresholdThresholdthresholdThresholdThreshold,
connectionconnectionConnectionconnectionConnectionConnection,
create_ocr_class_boxcreate_ocr_class_boxCreateOcrClassBoxcreate_ocr_class_boxCreateOcrClassBoxCreateOcrClassBox,
read_ocrread_ocrReadOcrread_ocrReadOcrReadOcr
trainf_ocr_class_mlptrainf_ocr_class_mlpTrainfOcrClassMlptrainf_ocr_class_mlpTrainfOcrClassMlpTrainfOcrClassMlp,
trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvm,
trainf_ocr_class_boxtrainf_ocr_class_boxTrainfOcrClassBoxtrainf_ocr_class_boxTrainfOcrClassBoxTrainfOcrClassBox,
info_ocr_class_boxinfo_ocr_class_boxInfoOcrClassBoxinfo_ocr_class_boxInfoOcrClassBoxInfoOcrClassBox,
write_ocrwrite_ocrWriteOcrwrite_ocrWriteOcrWriteOcr,
do_ocr_multido_ocr_multiDoOcrMultido_ocr_multiDoOcrMultiDoOcrMulti,
do_ocr_singledo_ocr_singleDoOcrSingledo_ocr_singleDoOcrSingleDoOcrSingle
OCR/OCV