Image Pre-Processing
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The AIForged Image Processor Service is used to pre-process documents before being sent to OCR services in order to increase the accuracy of the OCR.
The following operations are available when pre-processing documents:
| Operation | Description |
|---|---|
| Remove Comments | Remove any electronic comments from PDFs. |
| Rotate | Rotate the pages of a document. This is mostly used to deskew pages. |
| Greyscale | Convert the image to Greyscale. |
| Invert | Invert the colour of an image. |
| Mirror | Mirrors an image . |
| Remove Garbage | Used to remove small spots such as pen marks. |
| Remove Color Marks | Remove marks that may affect OCR accuracy, such as bank stamps. |
| Whiten Background | By specifying lower- and upper greyscale bounds, remove possible watermarks that may negatively impact OCR accuracy. Bound values are between 0 and 255, with 0 being black and 255 being white. |
Consider the document below, with a "DRAFT" watermark.
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The AIForged Image Processor Service can be used to remove the watermark and whiten the background.
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