ocr_change_charT_ocr_change_charOcrChangeCharOcrChangeChar (Operator)
Name
ocr_change_charT_ocr_change_charOcrChangeCharOcrChangeChar — Define a new conversion table for the characters.
Warning
ocr_change_charocr_change_charOcrChangeCharOcrChangeCharOcrChangeChar is obsolete and is only provided for
reasons of backward compatibility. New applications should use the
MLP, SVM or CNN based operators instead.
Signature
Description
The operator ocr_change_charocr_change_charOcrChangeCharOcrChangeCharOcrChangeChar establishes
a new look-up table for the characters. Hereby the
number of strings of CharacterCharacterCharacterCharactercharacter must be the same as
of the classifier OcrHandleOcrHandleOcrHandleOcrHandleocrHandle.
In order to enlarge the font, the operator
ocr_change_charocr_change_charOcrChangeCharOcrChangeCharOcrChangeChar may be used as follows:
More characters than actually needed will be indicated when
creating a network using (create_ocr_class_boxcreate_ocr_class_boxCreateOcrClassBoxCreateOcrClassBoxCreateOcrClassBox).
The last n characters will not be used so far.
If more characters are needed at a later stage, these unused
characters will be allocated and then trained with the help of the
operator ocr_change_charocr_change_charOcrChangeCharOcrChangeCharOcrChangeChar.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
This operator modifies the state of the following input parameter:
During execution of this operator, access to the value of this parameter must be synchronized if it is used across multiple threads.
Parameters
OcrHandleOcrHandleOcrHandleOcrHandleocrHandle (input_control, state is modified) ocr_box → HOCRBox, HTupleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
ID of the OCR-network to be changed.
CharacterCharacterCharacterCharactercharacter (input_control) string-array → HTupleHTupleHtuple (string) (string) (HString) (char*)
New assign of characters.
Default value:
['a','b','c']
["a","b","c"]
["a","b","c"]
["a","b","c"]
["a","b","c"]
Example (C)
HTuple Character1, Character2, OcrHandle;
create_tuple(&Character1,26);
set_s(Character1,"a",0);
set_s(Character1,"b",1);
/* set parameter values */
T_create_ocr_net(WidthPattern,HeightPattern,Interpolation,
Features,HiddenLayer,Init,Character1,&OcrHandle);
/* later... */
create_tuple(&Character2,26);
set_s(Character2,"alpha",0);
set_s(Character2,"beta",1);
T_ocr_change_char(OcrHandle,Character2);
Result
If the number of characters in CharacterCharacterCharacterCharactercharacter is identical
with the number of the characters of the network, the operator
ocr_change_charocr_change_charOcrChangeCharOcrChangeCharOcrChangeChar returns the value 2 (H_MSG_TRUE).
Otherwise an exception will be raised.
Possible Predecessors
read_ocrread_ocrReadOcrReadOcrReadOcr
Possible Successors
do_ocr_multi_class_mlpdo_ocr_multi_class_mlpDoOcrMultiClassMlpDoOcrMultiClassMlpDoOcrMultiClassMlp,
do_ocr_single_class_mlpdo_ocr_single_class_mlpDoOcrSingleClassMlpDoOcrSingleClassMlpDoOcrSingleClassMlp
Module
OCR/OCV