Operator Reference

HALCON Operator Reference / OCR / K-Nearest Neighbors

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clear_ocr_class_knnT_clear_ocr_class_knnClearOcrClassKnnClearOcrClassKnnclear_ocr_class_knn (Operator)

clear_ocr_class_knnT_clear_ocr_class_knnClearOcrClassKnnClearOcrClassKnnclear_ocr_class_knn — Clear an OCR classifier.

Signature

clear_ocr_class_knn( : : OCRHandle : )

Herror T_clear_ocr_class_knn(const Htuple OCRHandle)

void ClearOcrClassKnn(const HTuple& OCRHandle)

void HOCRKnn::ClearOcrClassKnn() const

static void HOperatorSet.ClearOcrClassKnn(HTuple OCRHandle)

void HOCRKnn.ClearOcrClassKnn()

def clear_ocr_class_knn(ocrhandle: HHandle) -> None

Description

clear_ocr_class_knnclear_ocr_class_knnClearOcrClassKnnClearOcrClassKnnclear_ocr_class_knn clears the OCR classifier given by OCRHandleOCRHandleOCRHandleOCRHandleocrhandle that was created with create_ocr_class_knncreate_ocr_class_knnCreateOcrClassKnnCreateOcrClassKnncreate_ocr_class_knn and frees all memory required for the classifier. After calling clear_ocr_class_knnclear_ocr_class_knnClearOcrClassKnnClearOcrClassKnnclear_ocr_class_knn, the classifier can no longer be used. The handle OCRHandleOCRHandleOCRHandleOCRHandleocrhandle becomes invalid.

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:

• OCRHandleOCRHandleOCRHandleOCRHandleocrhandle

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_knn → HOCRKnn, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Handle of the OCR classifier.

Result

If OCRHandleOCRHandleOCRHandleOCRHandleocrhandle is valid, the operator clear_ocr_class_knnclear_ocr_class_knnClearOcrClassKnnClearOcrClassKnnclear_ocr_class_knn returns the value 2 ( H_MSG_TRUE) . If necessary, an exception is raised.

Possible Predecessors

trainf_ocr_class_knntrainf_ocr_class_knnTrainfOcrClassKnnTrainfOcrClassKnntrainf_ocr_class_knn, read_ocr_class_knnread_ocr_class_knnReadOcrClassKnnReadOcrClassKnnread_ocr_class_knn

See also

create_class_knncreate_class_knnCreateClassKnnCreateClassKnncreate_class_knn

References

Marius Muja, David G. Lowe: “Fast Approximate Nearest Neighbors with Automatic Algorithm Configuration”; International Conference on Computer Vision Theory and Applications (VISAPP 09); 2009.

Module

OCR/OCV

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