get_features_ocr_class_knnT_get_features_ocr_class_knnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnget_features_ocr_class_knn (Operator)

Name

get_features_ocr_class_knnT_get_features_ocr_class_knnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnget_features_ocr_class_knn — Compute the features of a character.

Signature

get_features_ocr_class_knn(Character : : OCRHandle, Transform : Features)

Herror T_get_features_ocr_class_knn(const Hobject Character, const Htuple OCRHandle, const Htuple Transform, Htuple* Features)

void GetFeaturesOcrClassKnn(const HObject& Character, const HTuple& OCRHandle, const HTuple& Transform, HTuple* Features)

HTuple HImage::GetFeaturesOcrClassKnn(const HOCRKnn& OCRHandle, const HString& Transform) const

HTuple HImage::GetFeaturesOcrClassKnn(const HOCRKnn& OCRHandle, const char* Transform) const

HTuple HImage::GetFeaturesOcrClassKnn(const HOCRKnn& OCRHandle, const wchar_t* Transform) const   (Windows only)

HTuple HOCRKnn::GetFeaturesOcrClassKnn(const HImage& Character, const HString& Transform) const

HTuple HOCRKnn::GetFeaturesOcrClassKnn(const HImage& Character, const char* Transform) const

HTuple HOCRKnn::GetFeaturesOcrClassKnn(const HImage& Character, const wchar_t* Transform) const   (Windows only)

static void HOperatorSet.GetFeaturesOcrClassKnn(HObject character, HTuple OCRHandle, HTuple transform, out HTuple features)

HTuple HImage.GetFeaturesOcrClassKnn(HOCRKnn OCRHandle, string transform)

HTuple HOCRKnn.GetFeaturesOcrClassKnn(HImage character, string transform)

def get_features_ocr_class_knn(character: HObject, ocrhandle: HHandle, transform: str) -> Sequence[float]

Description

get_features_ocr_class_knnget_features_ocr_class_knnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnget_features_ocr_class_knn computes the features of the character given by CharacterCharacterCharacterCharactercharactercharacter with the k-NN classifier OCRHandleOCRHandleOCRHandleOCRHandleOCRHandleocrhandle and returns them in FeaturesFeaturesFeaturesFeaturesfeaturesfeatures. In contrast to do_ocr_single_class_knndo_ocr_single_class_knnDoOcrSingleClassKnnDoOcrSingleClassKnnDoOcrSingleClassKnndo_ocr_single_class_knn and do_ocr_multi_class_knndo_ocr_multi_class_knnDoOcrMultiClassKnnDoOcrMultiClassKnnDoOcrMultiClassKnndo_ocr_multi_class_knn, the character is passed as a single image object. Hence, before calling get_features_ocr_class_knnget_features_ocr_class_knnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnget_features_ocr_class_knn, reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain must typically be called. The parameter TransformTransformTransformTransformtransformtransform determines whether the feature transformation specified with PreprocessingPreprocessingPreprocessingPreprocessingpreprocessingpreprocessing in create_ocr_class_knncreate_ocr_class_knnCreateOcrClassKnnCreateOcrClassKnnCreateOcrClassKnncreate_ocr_class_knn for the classifier should be applied (TransformTransformTransformTransformtransformtransform = 'true'"true""true""true""true""true") or whether the untransformed features should be returned (TransformTransformTransformTransformtransformtransform = 'false'"false""false""false""false""false"). get_features_ocr_class_knnget_features_ocr_class_knnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnGetFeaturesOcrClassKnnget_features_ocr_class_knn can be used to inspect the features that are used for the classification.

Execution Information

Parameters

CharacterCharacterCharacterCharactercharactercharacter (input_object)  singlechannelimage objectHImageHObjectHImageHobject (byte / uint2)

Input character.

OCRHandleOCRHandleOCRHandleOCRHandleOCRHandleocrhandle (input_control)  ocr_knn HOCRKnn, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Handle of the k-NN classifier.

TransformTransformTransformTransformtransformtransform (input_control)  string HTuplestrHTupleHtuple (string) (string) (HString) (char*)

Should the feature vector be transformed with the preprocessing?

Default value: 'true' "true" "true" "true" "true" "true"

List of values: 'false'"false""false""false""false""false", 'true'"true""true""true""true""true"

FeaturesFeaturesFeaturesFeaturesfeaturesfeatures (output_control)  real-array HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)

Feature vector of the character.

Result

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

Possible Predecessors

trainf_ocr_class_knntrainf_ocr_class_knnTrainfOcrClassKnnTrainfOcrClassKnnTrainfOcrClassKnntrainf_ocr_class_knn

See also

create_ocr_class_knncreate_ocr_class_knnCreateOcrClassKnnCreateOcrClassKnnCreateOcrClassKnncreate_ocr_class_knn

Module

OCR/OCV