Help no longer quite so necessary! Although it will still be useful for users of the dll I expect. There is now a very preliminary version of 3.00 in svn for the brave to try.
Warning: I haven't downloaded the svn code myself to test it, but the code I think I uploaded works on both linux and windows, with Leptonica and the other image I/O libraries. The solution to the windows CRT problem is like this: Leptonica is built in VC++6, with a few hacks to make it do so. This results in a dll that depends on msvcrt.dll, and is therefore compatible with the other imaging libraries. Since Leptonica has a "safe" API, it can work with Tesseract built with either a static CRT or with msvcr90.dll, so the svn (and later tar.gz) includes copies of all the dll dependencies, libs and header files so no extra work is needed to build it on windows. There are some download and build instructions in the ReadMe wiki,<http://code.google.com/p/tesseract-ocr/wiki/ReadMe>but there is no other documentation at present. Here is a brief list of what's in it: Page layout analysis and different modes of layout assumption down to a single character. See baseapi.h 29 languages that will increase to 33 when it is a proper download. We haven't tested all the languages, but Russian looks good, and Vietnamese is greatly improved. Major changes to the API to move it towards thread-safety. Not there yet, but dramatically improved. Old-style variables eliminated. Language data in a single data file for each language simplifies managing the files. Greater stability. Leaks fixed. Memory errors fixed. Enjoy. Ray On Thu, Jul 9, 2009 at 10:43 PM, 74yrs old <withblessi...@gmail.com> wrote: > If anyone is sufficiently expert with VC++2008 succeeded in compiling in > WinXP, requested to post the details of how to do (step by step procedure > to be followed for compiling in VC++2008) for benefit of other users to > perform testing and feedback. > With Regards, > -sriranga(76yrsold) > > > On Fri, Jul 10, 2009 at 7:40 AM, Ray Smith <theraysm...@gmail.com> wrote: > >> *This is a plea for help!* >> Anyone interested in seeing 3.00 this side of August? >> >> Here is the status: >> >> Linux: >> Preliminary alpha release compiles and runs. It is slower than 2.04, due >> to the new page layout analysis, but the benefits are supposed to outweigh >> that: >> Page layout analysis. >> *Lots* of languages. >> more... >> In theory the linux version should compile and link happily with >> leptonica, given the right combination of apt-gets. Not tested yet, as I >> have been bogged down with windows: >> >> Windows: >> Preliminary alpha release also compiles and runs *without leptonica only*. >> DLL is broken due to API change. >> >> I only have very little time left before I will be away for a while, but I >> was hoping to post a pre-alpha version to svn for people to try. >> >> The problem is that there is no chance of getting the windows version to >> work with leptonica any time soon, and without it the flagship page layout >> analysis won't work properly. >> >> Here is the problem: >> Leptonica depends on the following lower-level libraries: >> libjpeg, >> libpng, >> libtiff, >> zlib. >> >> DLLs for these are all available for windows, but they are all compiled to >> use msvcrt.dll. >> Tesseract and Leptonica will not work unless they use the same crt >> (C-runtime) as the libraries, and VC++2008, which everyone wants to use will >> not (without jumping through more hoops than I can ask an average tesseract >> user to do) build anything to use msvcrt.dll. You must use either a >> statically linked crt, or use msvcr90.dll, a newer version that contains >> .net stuff that tesseract doesn't care about. >> >> *What I need are statically linked versions of the 4 libraries above >> compiled to use a statically linked crt (/MT option) and possibly their >> dependencies.* >> Alternatively, libraries built for the new msvcr90.dll (/MD) would do, but >> that would mean everybody has to have the VC++2008 distributables. It might >> help dll users though, when it is eventually working again. >> >> *This is not an easy task, as most of the sources for these libraries >> don't have vcproj/sln projects with which to build them.* >> If anyone is sufficiently expert with VC++2008 and building other people's >> code, and understands what I am talking about, I would be grateful for the >> help. >> The other viable alternative would be to compile letonica without image >> i/o at all, and leave tesseract still unable to read anything other than >> compressed tiff. >> >> Ray. >> >> PS A good place to get all these libraries is: >> http://gnuwin32.sourceforge.net/packages/*.htm, where * is tiff, jpeg, >> libpng, or zlib. >> >> On Tue, May 12, 2009 at 5:49 AM, javolo <rod.mcelr...@gmail.com> wrote: >> >>> >>> Ditto! I'm working on a pretty cool OCR application, and I'd happily >>> help testing for access to the 3.0 beta or release candidate. >>> I can test on Ubuntu and Windows XP. >>> >>> Thanks... >>> >>> On May 4, 3:07 pm, "Rob H." <hksny...@gmail.com> wrote: >>> > But seriously... I'm writing a fairly interesting application using >>> > Tesseract for my client: Gulfstream Aerospace. >>> > I have no problem testing 3.0, especially if I can get some >>> > performance gains. >>> >>> >> >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to tesseract-ocr@googlegroups.com To unsubscribe from this group, send email to tesseract-ocr+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en -~----------~----~----~----~------~----~------~--~---
