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do_ocr_single_class_svmDoOcrSingleClassSvmDoOcrSingleClassSvmdo_ocr_single_class_svmT_do_ocr_single_class_svm🔗

Short description🔗

do_ocr_single_class_svmDoOcrSingleClassSvmDoOcrSingleClassSvmdo_ocr_single_class_svmT_do_ocr_single_class_svm — Classify a single character with an SVM-based OCR classifier.

Signature🔗

do_ocr_single_class_svm( region Character, image Image, ocr_svm OCRHandle, integer Num, out string Class )void DoOcrSingleClassSvm( const HObject& Character, const HObject& Image, const HTuple& OCRHandle, const HTuple& Num, HTuple* Class )static void HOperatorSet.DoOcrSingleClassSvm( HObject character, HObject image, HTuple OCRHandle, HTuple num, out HTuple classVal )def do_ocr_single_class_svm( character: HObject, image: HObject, ocrhandle: HHandle, num: Sequence[int] ) -> Sequence[str]

def do_ocr_single_class_svm_s( character: HObject, image: HObject, ocrhandle: HHandle, num: Sequence[int] ) -> strHerror T_do_ocr_single_class_svm( const Hobject Character, const Hobject Image, const Htuple OCRHandle, const Htuple Num, Htuple* Class )

HTuple HRegion::DoOcrSingleClassSvm( const HImage& Image, const HOCRSvm& OCRHandle, const HTuple& Num ) const

HTuple HOCRSvm::DoOcrSingleClassSvm( const HRegion& Character, const HImage& Image, const HTuple& Num ) const

HTuple HRegion.DoOcrSingleClassSvm( HImage image, HOCRSvm OCRHandle, HTuple num )

HTuple HOCRSvm.DoOcrSingleClassSvm( HRegion character, HImage image, HTuple num )

Description🔗

do_ocr_single_class_svmDoOcrSingleClassSvm computes the best Numnumnum classes of the character given by the region Charactercharactercharacter and the gray values Imageimageimage with the OCR classifier OCRHandleOCRHandleocrhandle and returns the classes in ClassclassValclass. Because multiple classes may be returned by do_ocr_single_class_svmDoOcrSingleClassSvm, Charactercharactercharacter may only contain a single region (a single character). If multiple characters should be classified in a single call, do_ocr_multi_class_svmDoOcrMultiClassSvm must be used. Before calling do_ocr_single_class_svmDoOcrSingleClassSvm, the classifier must be trained with trainf_ocr_class_svmTrainfOcrClassSvm.

Execution information🔗

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🔗

Charactercharactercharacter (input_object) region → objectHObjectHRegionHObjectHobject

Character to be recognized.

Imageimageimage (input_object) singlechannelimage → object (byte / uint2)HObject (byte / uint2)HImage (byte / uint2)HObject (byte / uint2)Hobject (byte / uint2)

Gray values of the character.

OCRHandleOCRHandleocrhandle (input_control) ocr_svm → (handle)HTuple (HHandle)HOCRSvm, HTuple (IntPtr)HHandleHtuple (handle)

Handle of the OCR classifier.

Numnumnum (input_control) integer-array → (integer)HTuple (Hlong)HTuple (int / long)Sequence[int]Htuple (Hlong)

Number of best classes to determine.

Default: 11
Suggested values: 1, 2, 3, 4, 51, 2, 3, 4, 5

ClassclassValclass (output_control) string(-array) → (string)HTuple (HString)HTuple (string)Sequence[str]Htuple (char*)

Result of classifying the character with the SVM.

Result🔗

If the parameters are valid the operator do_ocr_single_class_svmDoOcrSingleClassSvm returns the value 2 (H_MSG_TRUE). If necessary, an exception is raised.

Combinations with other operators🔗

Combinations

Possible predecessors

trainf_ocr_class_svmTrainfOcrClassSvm, read_ocr_class_svmReadOcrClassSvm

Alternatives

do_ocr_multi_class_svmDoOcrMultiClassSvm

See also

create_ocr_class_svmCreateOcrClassSvm, classify_class_svmClassifyClassSvm

Module🔗

OCR/OCV