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PDF2XL OCR Online Help
Table of Contents User Interface Dialogs Settings Advanced OCR Settings Dialog
Advanced OCR Settings Dialog
This dialog allows you to set the advanced OCR options for PDF2XL OCR. We recommend that you only change this setting if you get poor results with the default settings.
The following options are available:
You can choose how much time PDF2XL OCR will spend on trying to convert the scanned image into text. Leveraging the slider bar towards the 'speedy' (left) side will result in faster conversion; moving it towards the 'recognition' (right) side will result in a better text recognition.
If the results of the OCR process are satisfactory, but the process is slower then you'd like, we'd recommend moving the bar to the left; if the OCR results are poor, consider trying to move the bar to the right to provide the recognition process with priority.
Checking this option will ensure that PDF2XL OCR will perform the OCR operation on the whole page when converting, as opposed to performing OCR only on the parts of the page that appear in the layout if it is cleared.
Checking this option will make the conversion slower, but in some cases can make it a lot more accurate.
Setting this option will allow you to change PDF2XL OCR's advanced image cleaning options. It will also take a little longer to process each scanned page's image, so the OCR process itself will be slower.
You can either allow PDF2XL OCR to select an automatic monochrome threshold, or set it manually. Change this setting if the scanned page is either very light or very dark.
By setting this option you can make the OCR process ignore small dots and imperfections in the scanned image. If the scanned document has a lot of 'noise', this option can help enormously.
To use it, check the despeckle box, and select the maximum size of the dot to remove. Moving the bar to the right will make PDF2XL OCR remove larger and larger 'dots', up to removing quite sizable chucks.
If this option is set, PDF2XL OCR will try to remove vertical and horizontal lines before processing the image. This is mostly useful when trying to process an image scanned from old computer print-out papers that have pre-printed lines on them.
Clicking this button will reset the advanced OCR settings to PDF2XL OCR's factory settings. You will be asked to OK the change (of course, you can always cancel the changes before they are applied using the Cancel button).
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