16 Replies Latest reply: Nov 4, 2013 1:09 PM by FUBARinSFO RSS

    Deskew with OCR better than deskew when optimizing

    FUBARinSFO Community Member

      Hello:

       

      I've found that the deskew performed with Optimize is inferior to the deskew when you OCR the scanned document.

       

      Is there a way to invoke the deskew performed by OCR instead of the deskew in Optimize?  I've got some tabular timesheets, with no recognizable text.  OCRing them and saving the images and then reassembling the individual pages into a PDF is not a great solution.

       

      Thanks in advance for your help.

       

      -- Roy Zider

       

      Adobe Acrobat 9 and 10

      Windows XP SP3

        • 1. Re: Deskew with OCR better than deskew when optimizing
          LoriAUC CommunityMVP

          On Windows in Acrobat X, you can configure a preset (File > Create PDF from Scanner > Configure Presets) that invokes Deskewing but not OCR.

          • 2. Re: Deskew with OCR better than deskew when optimizing
            FUBARinSFO Community Member

            LoriAUC:

             

            Yes, that's what I've done.  The deskew result is different than with OCR. That is the point of this post -- you appear to need to do OCR to get a proper deskew.

            • 3. Re: Deskew with OCR better than deskew when optimizing
              LoriAUC CommunityMVP

              I wasn't sure what method you were invoking the Deskew -- you can do this via the Custom Scan (or preset) or under the Tools > Document Processing > Optimize Scanned PDF. Which method are you using? It helps to understand the exact steps you're using to possibly replicate the situation. Are you scanning into Acrobat or starting with an image file?

              • 4. Re: Deskew with OCR better than deskew when optimizing
                KnightD Community Member

                He is starting with an image. He does not need to scan an image. The optimize pdf -> deskew results in a poor quality image. The option he is speaking of is found under the OCR options. When you OCR a document it deskews it and the original image quality is not lost. I don't know why this is. I came here looking for answers to the same question.

                • 5. Re: Deskew with OCR better than deskew when optimizing
                  FUBARinSFO Community Member

                  KnightD:

                   

                  Precisely.

                   

                  -- Roy Zider

                  • 6. Re: Deskew with OCR better than deskew when optimizing
                    LoriAUC CommunityMVP

                    So, if you're starting by opening an image (TIFF), the image goes through some processing when you open the file in Acrobat. The type of processing is determined by the settings under Edit > Preferences > Convert to PDF > TIFF. Depending on what you have set here, your file may be optimized upon opening, which obviously can affect what happens when you run the Optimize Scanned PDF command. I noticed a significant difference when I selected Deskew in the preferences versus running the Optimize Scanned PDF command. Do you notice this as well?

                    • 7. Re: Deskew with OCR better than deskew when optimizing
                      KnightD Community Member

                      I'm unclear on where you have selected deskew from the preferences. The images I'm working with are scanned Jpegs with a PDF wrapper, created by my scanner. The optimize Scanned PDF command produces poor results, yes. This is the only deskew I have found asside from what happens when you OCR the scanned image. I want to be able to use acrobat to deskew *without* OCR and have as good an image returned as I get from the OCR deskew.

                      • 8. Re: Deskew with OCR better than deskew when optimizing
                        LoriAUC CommunityMVP

                        There are a few different ways you can invoke deskewing in Acrobat X.

                        1. File > Create > PDF from scanner > Custom Scan in the Document Setting section under the Options... button
                        2. File > Create > PDF from scanner  > Configure Presets in the Document Setting section under the Options... button
                        3. When you open a TIFF file directly in Acrobat X, you can set Edit > Preferences > Convert to PDF > TIFF > Edit Settings .. and then click the Setting button at the top of this dialog.
                        4. When you run the Recognize Text command.
                        5. When you run the Optimize Scanned PDF command.

                         

                        If you haven't already, you might try a different workflow to see if you get better results.

                        • 9. Re: Deskew with OCR better than deskew when optimizing
                          FUBARinSFO Community Member

                          LoriAUC:

                           

                          That is a very helpful listing indeed.  The obvious reply to that is, "would it be too much trouble for you to link each of these entry points to the engine it is activating?"  In that way we can understand why the deskew under OCR is better than the others we have tried.  Perhaps one of these four other methods also leads to the same deskew engine used by OCR.

                           

                          Just to be clear: my question is: how does the user invoke the deskew engine used in OCR without OCRing the document?  (edit added 6/30/2012)

                           

                          -- Roy

                           

                          Message was edited by: FUBARinSFO to reinforce the original question, which remains unanswered.

                          • 10. Re: Deskew with OCR better than deskew when optimizing
                            mortgage661 Community Member

                            I need the same question answered, Thats what I came here looking for. The 5 options above doesn't answer my question unless those are the only options. I need the quality to stay the same as originals and dont need to OCR.  Does pro XI have a standalone deskew option for pdf files that are emailed to me.

                            • 11. Re: Deskew with OCR better than deskew when optimizing
                              LoriAUC CommunityMVP

                              In Acrobat XI, when you run the Optimize Scanned PDF command you'll need to make sure the slider in the Optimizations Options section in set to High Quality and then at the bottom uncheck OCR.

                              deskew.gif

                              • 12. Re: Deskew with OCR better than deskew when optimizing
                                lvldcty Community Member

                                Thanks for the information LoriAUC. However, this does not work for me.  It does not deskew the document.

                                 

                                We have been having issues with Adobe XI and the deskew portion.  In version 10 we could go in to Tools > Optimize Scanned PDF > make the needed changes to the Filters, Edit the OCR PDF output Style to "Searchable Image" and then run the optimization.  This would apply the filters and deskew the document both in the same step.  However, since version XI when we do the same thing, with the same files it will apply the filters but it will not deskew them (we have tried multiple files and multiple systems to rule out file issues and install issues).   The only way that we can get it to deskew it is to set the OCR PDF output to "Clearscan".  This would be fine except for the fact that the the clearscan setting does not apply the filters.  So...the only way we can get this to do what we need is to run the optimization once with the OCR PDF set to "Searchable Image" to apply the filters and then run it again with the OCR PDF output set to "clearscan" to deskew the document.  This is not a big deal with a single page document but becomes a larger time issue when dealing with large, multipage documents.  It appears that this is a "bug" in version XI.  Any suggestions on how to accomplish in version XI what we used to be able to do easily in Version X. 

                                 

                                Additional information: We are running Adobe 11.0.01 on Windows 7 64 bit OS.

                                • 13. Re: Deskew with OCR better than deskew when optimizing
                                  apangasa Adobe Employee

                                  Hi,

                                   

                                  We are working on this issue. And hopefully, in the next dot release we might provide a fix for this issue.

                                  For the time being, please use Acrobat 11 as this issue does not exists in Acrobat 11.

                                   

                                  Thanks.

                                  • 14. Re: Deskew with OCR better than deskew when optimizing
                                    happisburgh2010 Community Member

                                    Sorry didn't lvldcty

                                     

                                    just say he was having problems with 11!

                                    • 15. Re: Deskew with OCR better than deskew when optimizing
                                      ozdazza Community Member

                                      Hello

                                       

                                      I am using Acrobat 11 Pro and I can assure you that deskewing ONLY works when a document is OCR'd.

                                       

                                      When I try "optimize document" following the steps described in this thread, the scanned PDF is not descewed.

                                       

                                      For you information, I am using Acrobat 11 Pro for the Mac mainly with Japanese PDF scanned documents.

                                       

                                      Is this bug actively being pursued, or must I pester Adobe Japan who will only forward on the rest to your head office?

                                       

                                      Looking forward to some guidance and help.

                                       

                                      Cheers!

                                      • 16. Re: Deskew with OCR better than deskew when optimizing
                                        FUBARinSFO Community Member

                                        Earlier posts by Adobe indicated this was fixed in v11.  Evidently it is

                                        still a problem, a major annoyance after all these years.

                                         

                                        -- Roy Zider