do_ocr_multi_class_svmT_do_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm (Operator)
Name
do_ocr_multi_class_svmT_do_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm
— Classify multiple characters with an SVM-based OCR classifier.
Signature
Description
do_ocr_multi_class_svmdo_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm
computes the best class for each of
the characters given by the regions CharacterCharacterCharacterCharactercharactercharacter
and the gray
values ImageImageImageImageimageimage
with the SVM-based OCR classifier
OCRHandleOCRHandleOCRHandleOCRHandleOCRHandleocrhandle
and returns the classes in ClassClassClassClassclassValclass
. In
contrast to do_ocr_single_class_svmdo_ocr_single_class_svmDoOcrSingleClassSvmDoOcrSingleClassSvmDoOcrSingleClassSvmdo_ocr_single_class_svm
,
do_ocr_multi_class_svmdo_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm
can classify multiple characters in
one call, and therefore typically is faster than a loop that uses
do_ocr_single_class_svmdo_ocr_single_class_svmDoOcrSingleClassSvmDoOcrSingleClassSvmDoOcrSingleClassSvmdo_ocr_single_class_svm
to classify single characters.
However, do_ocr_multi_class_svmdo_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm
can only return the best
class of each character. Before calling
do_ocr_multi_class_svmdo_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm
, the classifier must be trained with
trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvmTrainfOcrClassSvmtrainf_ocr_class_svm
.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
Parameters
CharacterCharacterCharacterCharactercharactercharacter
(input_object) region(-array) →
objectHRegionHObjectHRegionHobject
Characters to be recognized.
ImageImageImageImageimageimage
(input_object) singlechannelimage →
objectHImageHObjectHImageHobject (byte / uint2)
Gray values of the characters.
OCRHandleOCRHandleOCRHandleOCRHandleOCRHandleocrhandle
(input_control) ocr_svm →
HOCRSvm, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Handle of the OCR classifier.
ClassClassClassClassclassValclass
(output_control) string(-array) →
HTupleSequence[str]HTupleHtuple (string) (string) (HString) (char*)
Result of classifying the characters with the
SVM.
Result
If the parameters are valid the operator
do_ocr_multi_class_svmdo_ocr_multi_class_svmDoOcrMultiClassSvmDoOcrMultiClassSvmDoOcrMultiClassSvmdo_ocr_multi_class_svm
returns the value TRUE. If
necessary, an exception is raised.
Possible Predecessors
trainf_ocr_class_svmtrainf_ocr_class_svmTrainfOcrClassSvmTrainfOcrClassSvmTrainfOcrClassSvmtrainf_ocr_class_svm
,
read_ocr_class_svmread_ocr_class_svmReadOcrClassSvmReadOcrClassSvmReadOcrClassSvmread_ocr_class_svm
Alternatives
do_ocr_single_class_svmdo_ocr_single_class_svmDoOcrSingleClassSvmDoOcrSingleClassSvmDoOcrSingleClassSvmdo_ocr_single_class_svm
See also
create_ocr_class_svmcreate_ocr_class_svmCreateOcrClassSvmCreateOcrClassSvmCreateOcrClassSvmcreate_ocr_class_svm
,
classify_class_svmclassify_class_svmClassifyClassSvmClassifyClassSvmClassifyClassSvmclassify_class_svm
Module
OCR/OCV