David, I'm interested in seeing it. Don't you have to run the script four times though? I'm dealing with probably 1/2 of my scans coming in upright, 1/4 rotated 90* left and 1/4 rotated 90* right. There are a few oddballs that are turne 180*, but not enough to be significant.
I was looking at Faisal's suggestion, and there is a file in the leptonica source code progs directory that look's promising. /* * flipdetect_reg.c * * Tests 90 degree orientation of text and whether the text is * mirror reversed. Compares the rasterop with dwa implementations * for speed. Shows the typical 'confidence' outputs from the * functions in flipdetect.c. */ I'm traveling for a few days and don't have easy access to a computer with a compiler to do some tests, but I think it might do the trick. Thank you, Michael Moore On Tue, Apr 21, 2009 at 12:04 PM, David Knight <[email protected]> wrote: > > I recently had this problem when creating an OCR script for the > visually impaired. I couldn't find and tools which detect orientation > so instead I wrote a simple bash script to detect the number of > legible characters in the OCR'd text and to compare this with the same > text flipped over. It works for plain text but I suspect it would > struggle with text containing images or non-english language. If you > are interested please let me know and I will send you the script. > > On Apr 21, 7:29 am, Faisal Shafait <[email protected]> wrote: >> You can use Leptonica for page orientation detection. >> OCRopus will probably have page orientation detection in the next release. >> >> On Mon, Apr 20, 2009 at 5:01 AM, Michael Moore <[email protected]> wrote: >> >> > I'm pretty sure Ocropus can't do auto page orientation detection yet. >> >> > Assuming it can't, is anyone aware of a Linux tool which can? >> >> > Thank you, >> > -- >> > Michael Moore >> > ------------------------- >> > Share your families' genealogy and family history books. It's easy and >> > free :http://bookscanned.com > > > -- Michael Moore ------------------------- Share your families' genealogy and family history books. It's easy and free : http://bookscanned.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "ocropus" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/ocropus?hl=en -~----------~----~----~----~------~----~------~--~---
