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Returns the amount of color contrast used for OCR. Use when debugging OCR statements to see the contrast used and determine if changes are needed to improve the accuracy of returned text. The contrast is set in the playback options or by the OCRSetContrast statement. See Troubleshooting OCR issues.
Syntax
OCRGetContrast()
Return value
| Value | Description |
|---|---|
| Value between 0 and 100 | Amount of color contrast applied to images before they are read using OCR. 0 indicates no contrast is applied and 100 indicates images are solid black. |
Example
'Saves default OCR settings
lang = OCRGetLanguageFilePath()
contrast = OCRGetContrast()
imgScale = OCRGetScale()
grayConversion = OCRIsConvertingToGrayscale()
Try
'Changes OCR settings for the checkpoint
OCRSetLanguageFilePath("C:\\tessdata\\MICR.traineddata")
OCRSetContrast(50)
OCRSetScale(2)
OCRConvertToGrayscale(True)
'Verifies text in the page footer
Window("ACME Bank").OCRCheckpoint(92, "ACME Bancorp, Member FDIC", 13, 4, 86, 11, False, "Footer text is incorrect")
Finally
'Resets default OCR settings
OCRSetLanguageFilePath(lang)
OCRSetContrast(contrast)
OCRSetScale(imgScale)
OCRConvertToGrayscale(grayConversion)
End Try
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