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 -
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