Hi Remi, just a last hint: I found this discussion http://social.msdn.microsoft.com/Forums/en-US/windowsazure/thread/8cfa4449-ffcb-4740-a0b1-636d354ac429/?prof=required , where seems to have been found a possible workaround for the dll memory lack (I think...). Obviously, the Init() method differs from standard syntax (it added the "tessdata" path, that you recently allow to give through SetRootPath method), but sounds interesting... Unfortunately, at this moment, I don't have a C++ compiler for trying myself these modifications, but I will try in next days.... Best Regards ZioZione
On 29 Apr, 11:44, ZioZione <[email protected]> wrote: > Hi Remi, > I tried to do following: > > [Serializable] > public class myOCR > { > public tessnet2.Tesseract ocr; > } > > myOCR myocr = null; > MemoryStream ms = null; > > void InitialiseData() > { > myocr = new myOCR(); > myocr.ocr = new tessnet2.Tesseract(); > ms = new MemoryStream(); > tessDataPath = Server.MapPath("../tessdata"); > BinarySerialize(ms, tessDataPath, "ita", myocr); > } > > public void BinarySerialize(Stream ms, string dataPath, string > language, myOCR myocr) > { > myocr.ocr.SetRootPath(dataPath, language); > myocr.ocr.Init(language, false); > > try > { > BinaryFormatter binaryFormatter = new BinaryFormatter > (); > binaryFormatter.Serialize(ms, myocr); > } > catch (Exception ex) > { > throw ex; > } > finally > { > ms.Close(); > } > } > > but BinarySerialize throws following SerializationException: > > Type 'tessnet2.Tesseract' in Assembly 'tessnet2, Version=2.0.3.7, > Culture=neutral, PublicKeyToken=null' is not marked as serializable. > > How did you think I have to modify my code for bypass this problem? > Thank you very much! > Best Regards > ZioZione > > On 29 Apr, 11:04, ZioZione <[email protected]> wrote: > > > Hi Remi, > > thank you for your reply. > > I read the interesting article you linked, but, as a real newbie about > > serialization, I have some difficulties to apply it to tesseract > > settings. > > In particular, what stream should I use for serializing OCR? Could be > > the image itself, or what else? > > Thank you very much for your support! > > Best Regards > > ZioZione > > > On 28 Apr, 21:45, Remi Thomas <[email protected]> wrote: > > > > Search for "serilization" in this group. > > > > Remi > > > > On Apr 28, 2:58 pm, ZioZione <[email protected]> wrote: > > > > > Hi Remi, > > > > I was afraid about such reply... > > > > But what you intend when you talk about "invoke it from another > > > > process"? Did you mean: "start a new thread in which you invoke > > > > tesseract"? Did you think this could work? Did you have some working > > > > samples? Thank you! > > > > Best Regards > > > > ZioZione > > > > > On 28 Apr, 14:31, Remi Thomas <[email protected]> wrote: > > > > > > 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- Hide quoted text - > > > > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
