I see, If you have read the forum you now tesseract contains some memory leak. It's impossible to reset it correctly. The only solution I know is to exit the running process and restart it. With IIS it's impossible, the only soultion I see is to invoke it from another process. .NET can't unload a loaded DLL.
Remi On Apr 28, 1:43 pm, ZioZione <[email protected]> wrote: > Hi Remi, thank for your quick reply! > Yes, tessDataPath is the same folder both for Release and Debug. > My Web Application is structured as follows > > \bin --> contains tessnet2.dll > \obj --> contains Debug and Release folders > \Web --> contains application pages > \Web\Home\frm_HOM.aspx --> main page > \Web\Home\frm_HOM.aspc.cs --> main page codebehind > \Web\Images --> contains all images to be OCRed > \Web\tessdata --> contains "eng" and "ita" languages tessdata folders > > I tested also your latest dll, but, unfortunately, the behavior is the > same. I will go more in details. > Lets call "RunDebug" when you select from VS2005 the menu item Debug | > Start Debugging, and "RunWODebug" when you select Debug | Start > Without Debugging. After every run, I close .NET Development Server > (WebDev.WebServer.exe) for reset all sessions. Here are all results: > > Debug, RunDebug --> OK > Debug, RunWODebug --> error > Release, RunDebug (makes no sense for me, but...) --> OK > Release, RunWODebug --> error > > Also, if I RunNoDebug after a RunDebug without resetting Development > Server, it works correctly. If I RunDebug without set breakpoints, it > works correctly. > > Hope this helps for pointing out what could have been happened to the > dll. > Please let me know if I have to try some other things. Thank you! > Best Regards > ZioZione > > On 28 Apr, 11:56, Remi Thomas <[email protected]> wrote: > > > Hi, > > > Is tessDataPath is the same in release and debug mode? > > I did change a compilation option in tessnet2.dll, please try with the > > new one.http://www.pixel-technology.com/freeware/tessnet2/bin.zip > > > Remi > > > On Apr 28, 9:09 am, ZioZione <[email protected]> wrote: > > > > Hi everybody, > > > I am writing a C# Web Application that must perform OCR over various > > > TIFF files. I am using the latest tessnet2 release (april 21, 2009). > > > Here is the codebehind of my page: > > > > tessnet2.Tesseract ocr = null; > > > string tessImgPath = ""; > > > string tessDataPath = ""; > > > > protected void Page_Load(object sender, EventArgs e) > > > { > > > InitialiseData(); > > > > tessImgPath = Server.MapPath("../Images/P0028594.tif"); > > > Bitmap image = new Bitmap(tessImgPath); > > > > List<tessnet2.Word> m_words; > > > m_words = ocr.DoOCR(image, Rectangle.Empty); > > > > if (m_words != null) > > > { > > > int lc = tessnet2.Tesseract.LineCount(m_words); > > > for (int i = 0; i < lc; i++) > > > { > > > Response.Write(tessnet2.Tesseract.GetLineText > > > (m_words, i) + "<br>"); > > > } > > > } > > > } > > > > void InitialiseData() > > > { > > > ocr = new tessnet2.Tesseract(); > > > tessDataPath = Server.MapPath("../tessdata"); > > > ocr.SetRootPath(tessDataPath, "ita"); > > > ocr.Init("ita", false); > > > } > > > > I have the following problem: if the application is running in Debug > > > mode, it works correctly, while running in Release mode (or also Start > > > Without Debugging), the row > > > > ocr.Init("ita", false); > > > > causes following error: > > > > Attempted to read or write protected memory. This is often an > > > indication that other memory is corrupt. > > > > Here is the Stack Trace: > > > > [AccessViolationException: Attempted to read or write protected > > > memory. This is often an indication that other memory is corrupt.] > > > fgets(SByte* , Int32 , _iobuf* ) +0 > > > read_word_list(SByte* filename, UInt64* dawg, Int32 max_num_edges, > > > Int32 reserved_edges) +562 > > > init_permute() +543 > > > program_editup(SByte* configfile) +335 > > > tessnet2.Tesseract.Init(String lang, Boolean numericMode) +66 > > > SDG_MODI.Web.Home2.Home.InitialiseData() in C:\Produzione > > > \PROGETTI_NET\SDG_MODI\SDG_MODI\Web\Home2\frm_HOM2.aspx.cs:110 > > > SDG_MODI.Web.Home2.Home.Page_Load(Object sender, EventArgs e) in C: > > > \Produzione\PROGETTI_NET\SDG_MODI\SDG_MODI\Web\Home2\frm_HOM2.aspx.cs: > > > 28 > > > System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, > > > Object o, Object t, EventArgs e) +15 > > > System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object > > > sender, EventArgs e) +33 > > > System.Web.UI.Control.OnLoad(EventArgs e) +99 > > > System.Web.UI.Control.LoadRecursive() +47 > > > System.Web.UI.Page.ProcessRequestMain(Boolean > > > includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) > > > +1436 > > > > What I have to do for avoid this error? > > > Another question: I need also to show the TIFF image into the Web > > > page. Actually it seems not possible, so I think I need some code to > > > perform a conversion between TIFF and, i.e., JPG. Can someone point me > > > out to some useful code? Thank you! > > > Best Regards > > > ZioZione --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "tesseract-ocr" 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/tesseract-ocr?hl=en -~----------~----~----~----~------~----~------~--~---
