English (English)
Preprocess Method of the FRDocument Object
This method performs preprocessing of all pages in the document: corrects page orientation, inversion, geometrical distortions, performs page splitting if necessary. Preprocessing is performed before layout analysis.
Syntax
C++
HRESULT Preprocess(
IPagePreprocessingParams* PreprocessingParams,
IObjectsExtractionParams* ExtractionParams,
IRecognizerParams* RecognizerParams,
IPageSplittingParams* SplittingParams
);
C#
void Preprocess(
IPagePreprocessingParams PreprocessingParams,
IObjectsExtractionParams ExtractionParams,
IRecognizerParams RecognizerParams,
IPageSplittingParams SplittingParams
);
Visual Basic .NET
Sub Preprocess( _ [PreprocessingParams As IPagePreprocessingParams = Nothing], _ [ExtractionParams As IObjectsExtractionParams = Nothing], _ [RecognizerParams As IRecognizerParams = Nothing], _ [SplittingParams As IPageSplittingParams = Nothing] _ )
Parameters
- PreprocessingParams
- [in] Refers to the PagePreprocessingParams object that stores parameters of preprocessing. This parameter may be 0. In this case, the pages are preprocessed with default parameters, or, if a profile has been loaded, the parameters set by this profile are used.
- ExtractionParams
- [in] Refers to the ObjectsExtractionParams object that stores parameters of objects extraction. This parameter may be 0. In this case, the objects are extracted with default parameters, or, if a profile has been loaded, the parameters set by this profile are used.
- RecognizerParams
- [in] Refers to the RecognizerParams object that stores recognition parameters necessary for preprocessing (e.g., recognition language). This parameter may be 0. In this case, the default parameters are used, or, if a profile has been loaded, the parameters set by this profile are used.
- SplittingParams
- [in] Refers to the PageSplittingParams object that stores parameters of page splitting. This parameter may be 0. In this case, no split is done for the pages of the document, or, if a profile has been loaded, the parameters set by this profile are used.
Return values
If page preprocessing is interrupted by the user, this method will return E_ABORT. It also returns the standard return codes of ABBYY FineReader Engine functions.
Remarks
- This method may report events to the listeners attached to the IConnectionPointContainer interface of the FRDocument object.
- Depending on the value of the IEngine::MultiProcessingParams property, ABBYY FineReader Engine can distribute preprocessing of multi-page documents to CPU cores.
See also
Tuning Parameters of Preprocessing, Analysis, Recognition, and Synthesis
17.09.2024 15:14:40