Combined text/graphics OCR problem

Hi.
I need to convert a dozen of manuals from tiff to (editable) Word files. Each tiff file is one manual consisting about 50 pages.
There are graphics on some pages with words and/or numbers in it (technical schemes).
When I open them in Adobe Acrobat Pro and convert/save it to Word using OCR, the schemes are getting messed up because of the OCR.
How can I let it use OCR on the text pages only and leave the graphics as they are?

Import the TIFF into a pdf, you can use the Text Recognition tool page by page. Personally, I prefer for a job like your to use a dedicated OCR program that lets me designate which parts of the page should be considered graphics and which are text that needs to be OCRd.

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I'm looking at buying a high-end colour laser like the Xerox 7750 or Ricoh 7200. I've got a few questions about colour lasers in general (see my other recent posts). Feel free to offer any comments about:
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My HP scanner has options that optimise the scanning quality for text, graphics or both. ie it appears there is no one setting that scans a mixed page at the best quality. I've noticed on reading printer manuals that some also offer different print settings for graphics and text. Do colour lasers print text in an inferior way if there are graphics on the same page; and vice versa? Or should text quality (and graphics) stay the same no matter what else is on the page? Assume the text is sent to the printer as actual text (not rasterised in the application).
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Thanks in advance for any comments.

Import the TIFF into a pdf, you can use the Text Recognition tool page by page. Personally, I prefer for a job like your to use a dedicated OCR program that lets me designate which parts of the page should be considered graphics and which are text that needs to be OCRd.

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Over the course of a few months, my company received a large number of PDF files for a project for which the internal policy was that every file should be text searchable. Unfortunately, we did not save the native files in any sort of convenient way, having at that time not realized that failing to do so was a very bad idea. We ran OCR on every one of the files that we received, which total approximately 4,000. At the time that we received the majority of these files, my company was still using Acrobat 7; we've since upgraded to version 8.
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Hi,
Bernd's been across the mountain and seen the bear; so, you can bank on what he posted.
But, just because, I'll second his "no".
Formatted Text and Graphics (Acrobat 7, 8) and ClearScan (Acrobat 9, X) effectively replace the image of textual characters.
If a character is not recognized as 'something' a bit map is of the thing is left behind.
Now, while Acrobat or other OCR engines (Abbey FineReader, AdLib, Adobe Capture, etc.) are really rather impressive no OCR engine has 100% accuracy 100% of the time. Other variables come into play (scan lamp age/brightness, platen cleanliness, scanner mechanicals cleanliness, calibration of scanner, hard copy 'quality' (characters' darkness density, contrast between characters and background, presence of lack thereof of boxed in text, text in or adjacent to line arcs/circles, etc.).
All of that is for semantic content that is "textual". Semantic content that is not textual (but, coincidently may contain text) provides little to no useful OCR output (e.g., graphs, drawings, etc.). Validate this by performing OCR on such a PDF then Export to a plain text file. Print this file out and compare that to the source paper or the scanned image.
There is no metadata info that identifies the OCR mode used.
Perhaps something buried in the bowls of PDF page description content; if so, not intrinsically easy to obtain.
My suggestion (fwiw) - move forward with re-scan.
A server product would help to move it along but a high speed scanner hooked to a local machine (with ample resources) and Acrobat Pro 8 or 9 get it done. With Acrobat 8 or 9 use Search Image (Exact). In Preferences check the category Create PDF or TIFF to assure it is what you desire. Check Acrobat's scan presets to assure you have what you want vis-a-vis Compression and Filtering. Do avoid "Automatic".
Be well...

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This question was solved.
View Solution.

The troubleshooting steps in this document may help resolve the issue of black not printing. If not see the post here.
Bob Headrick, HP Expert
I am not an employee of HP, I am a volunteer posting here on my own time.
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I read through your post about how you are attempting to use OCR software that was to be included with your printer software installation. I was unable to recreate this situation here on my lab computer to see what you are seeing on your end.
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Here is HP's contact info:
If you are calling within North America, the number is 1-800-474-6836 and if you are calling outside of the US/Canada: click here.
I hope you soon have a solution!
Have a great day
R a i n b o w 7000I work on behalf of HP
Click the “Kudos Thumbs Up" at the bottom of this post to say
“Thanks” for helping!
Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

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Combined text/graphics OCR problem

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