Perform auto image processing clean up on all the pages in the OCR document to enhance the quality of the pages before starting its recognition.
public void AutoPreprocess(
OcrAutoPreprocessPageCommand command,
OcrProgressCallback callback
)
Overloads Sub AutoPreprocess( _
ByVal command As OcrAutoPreprocessPageCommand, _
ByVal callback As OcrProgressCallback _
)
- (BOOL)autoPreprocessPages:(LTOcrAutoPreprocessPageCommand)command
progress:(nullable LTOcrProgressHandler)progressHandler
error:(NSError **)error
void AutoPreprocess(
OcrAutoPreprocessPageCommand command,
OcrProgressCallback^ callback
)
command
The preprocessing command to perform.
callback
Optional callback to show operation progress.
This method will iterate through all the pages in this OCR document and run IOcrPage.AutoPreprocess on each page.
You can use this method to deskew, rotate or invert the image according to command. By performing auto pre-processing on the page, you can improve the image quality of draft mode faxes.
You can use the OcrProgressCallback to show the operation progress or to abort it. For more information and an example, refer to OcrProgressCallback.
You should call this method prior to calling Recognize.
To perform auto-preprocessing to a range of pages in the OCR document use AutoPreprocess(OcrAutoPreprocessPageCommand command, int firstPageIndex, int lastPageIndex, OcrProgressCallback callback).
This member only works with memory-based documents and will throw an exception otherwise. For more information, refer to IOcrDocumentManager.CreateDocument and Programming with the LEADTOOLS .NET OCR.
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