![]() ![]() The text recognition accuracy mainly depends on the scanned document quality, but there are many other facts that can affect the result. Note that OCR operation does not guarantee that all text in a PDF document would be recognized correctly. This method makes the word searchable even though it is displayed as a bitmap. Suspects appear in the PDF as the original bitmap of the word, but the text is included on an invisible layer behind the bitmap of the word. If the ideal substitution is uncertain, software marks the word as suspect. When you run OCR on a scanned output, the Acrobat® analyzes bitmaps of text and substitutes words and characters for those bitmap areas. The text recognition creates a layer of text in the PDF that can be searched, or copied and pasted into a new document. Step 6 - Inspect the Results Inspect the results. Step 5 - Start Processing Click "Recognize Text" button to starting recognizing text. Click "OK" to save changes and close the dialog. Higher-numbered options do less downsampling, producing higher-resolution PDFs. Choose the degree of downsampling to apply. The "Downsample To" pull down menu allows to decrease the number of pixels in color, grayscale, and monochrome images after OCR is complete.
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