In fact, I initialized tesseract once, and I release the tesseract object
in destructor ... I earned ~25 MB ...
On Tuesday, June 25, 2019 at 10:02:34 AM UTC+3, _ Flaviu wrote:
>
> I have modified the code as follow:
>
> CTemp::CTemp()
> {
> m_Tess.Init(_T("C:\\tessdata-master\\"), _T("eng"),
> tesseract::OcrEngineMode::OEM_TESSERACT_LSTM_COMBINED);
> }
>
> CTemp::~CTemp()
> {
> m_Tess.Clear();
> m_Tess.End();
> m_Tess.ClearPersistentCache();
> }
>
> BOOL CTemp::GetTextFromImage(CString sFileName)
> {
> PIX* pix = NULL;
>
> do
> {
> // read image
> PIX* pix = pixRead(sFileName);
> if (! pix)
> {
> m_sError.Format(_T("Cannot open input file: %s."), sFileName);
> break;
> }
> // recognize
> m_Tess.SetImage(pix);
> }
> while (FALSE);
>
> // cleanup
> pixDestroy(&pix);
>
> return m_sError.IsEmpty();
> }
>
>
> The same result, (only 10MB less).
>
> On Monday, June 24, 2019 at 8:40:26 PM UTC+3, zdenop wrote:
>>
>> I am sorry I miss understand your code: I was expecting that in
>> do/while loop you are iterating over file list. IMO its inefficient to
>> initialize tesseract for each image.
>>
>>
>> Zdenko
>>
>> po 24. 6. 2019 o 11:06 _ Flaviu <[email protected]> napísal(a):
>> >
>> > I think there no loop there, it is just an do/while(FALSE), those Clear
>> and pixDestroy is called every time when an images are read.
>> >
>> > On Monday, June 24, 2019 at 11:52:11 AM UTC+3, zdenop wrote:
>> >>
>> >> And also pixDestroy should be in loop too. You just create new
>> objects and you did not destroy them, so why you wander you run out of
>> memory?
>> >>
>> >>
>> >> Zdenko
>> >>
>> >>
>> >> po 24. 6. 2019 o 10:35 Zdenko Podobny <[email protected]> napísal(a):
>> >>>
>> >>> IMHO you should call Clear in loop with SetImage :
>> https://github.com/tesseract-ocr/tesseract/blob/master/src/api/baseapi.h#L675
>>
>> >>>
>> >>> Zdenko
>> >>>
>> >>>
>> >>> po 24. 6. 2019 o 10:25 _ Flaviu <[email protected]> napísal(a):
>> >>>>
>> >>>> I come in just in time: I have developed a little test application,
>> which have debug and release, source code, and exe.
>> >>>>
>> >>>> Here is the code that get text from images:
>> >>>>
>> >>>> BOOL CTemp::GetTextFromImage(CString sFileName)
>> >>>> {
>> >>>> PIX* pix = NULL;
>> >>>> tesseract::TessBaseAPI Tess;
>> >>>>
>> >>>> do
>> >>>> {
>> >>>> if (Tess.Init(_T("C:\\tessdata-master\\"), _T("eng"),
>> tesseract::OcrEngineMode::OEM_TESSERACT_LSTM_COMBINED))
>> >>>> {
>> >>>> m_sError.Format(_T("OCRTesseract: Could not initialize
>> tesseract."));
>> >>>> break;
>> >>>> }
>> >>>> // read image
>> >>>> PIX* pix = pixRead(sFileName);
>> >>>> if (! pix)
>> >>>> {
>> >>>> m_sError.Format(_T("Cannot open input file: %s."), sFileName);
>> >>>> break;
>> >>>> }
>> >>>> // recognize
>> >>>> Tess.SetImage(pix);
>> >>>> }
>> >>>> while (FALSE);
>> >>>>
>> >>>> // cleanup
>> >>>> pixDestroy(&pix);
>> >>>> Tess.Clear();
>> >>>> Tess.End();
>> >>>>
>> >>>> return m_sError.IsEmpty();
>> >>>> }
>> >>>>
>> >>>> Of course, you have put tessdata-master folder in C:
>> >>>>
>> >>>> The test app has an menu item: File->Read images, and from that
>> CFileDialog you can select multiple image file, and you can see the state
>> of reading in the statusbar.
>> >>>>
>> >>>> If you intend to run this project on you machine, you have modify
>> yourself the paths in project settings. No big deal. The project is a
>> VS2017 project, MFC.
>> >>>>
>> >>>> I run this app on few Win10 64bit machines, with the same results. I
>> have loaded for my tests 14 images, and after all image has been converted,
>> the test app took 466 MB, and after these 14 images has been loaded again,
>> the app took 883 MB, after I loaded again, 1307 MB, and so on ... the only
>> way to free RAM is to stop the app and start again ! Sad :(
>> >>>>
>> >>>> Here is the link for attachements:
>> https://1drv.ms/f/s!AtSPCxnvttzegw6QHz8RAOjJq8fe
>> >>>>
>> >>>>
>> >>>> On Monday, June 24, 2019 at 10:53:40 AM UTC+3, zdenop wrote:
>> >>>>>
>> >>>>> AFAIR: there were always problem with windows tesseract debug build
>> (MSVC). Release version works fine, but debug failed. So it would be great
>> if somebody experienced with windows debugging have a look at this.
>> >>>>>
>> >>>>> Zdenko
>> >>>>>
>> >>>>>
>> >>>>> ne 23. 6. 2019 o 20:29 _ Flaviu <[email protected]> napísal(a):
>> >>>>>>
>> >>>>>> Ok, good idea, I am working right now on a simple testing app that
>> prove the issue. I will come back as soon as I can.
>> >>>>>>
>> >>>>>> On Thursday, June 20, 2019 at 2:02:12 PM UTC+3, _ Flaviu wrote:
>> >>>>>>>
>> >>>>>>> I am using tesseract 4 on a VC++ (MFC) app, to read text from
>> images (A4 sizes). I noticed that while I using this app on several PCs
>> (Win10 64 bit, *GB RAM), the RAM occupied by my app (that use tesseract) is
>> increasing on and on. If I read 14 images, my app eat 470 MB, and if I
>> didn't close the app and read again all these 14 images, the RAM eaten by
>> my app is increasing until ~800MB, and if continue to read the same images,
>> the RAM is increasing on an on. Why is this happen ?
>> >>>>>>>
>> >>>>>>> Here is the code that I am using for tesseract:
>> >>>>>>>
>> >>>>>>> BOOL CMyClass::GetTextFromImage()
>> >>>>>>> {
>> >>>>>>> PIX* pix = NULL;
>> >>>>>>> tesseract::TessBaseAPI* pTess = new tesseract::TessBaseAPI;
>> >>>>>>>
>> >>>>>>> do
>> >>>>>>> {
>> >>>>>>> if (pTess->Init(...))
>> >>>>>>> {
>> >>>>>>> m_sError.Format(_T("OCRTesseract: Could not initialize
>> tesseract."));
>> >>>>>>> break;
>> >>>>>>> }
>> >>>>>>> // setup
>> >>>>>>> // read image
>> >>>>>>> PIX* pix = pixRead(m_sFileName);
>> >>>>>>> if (! pix)
>> >>>>>>> {
>> >>>>>>> break;
>> >>>>>>> }
>> >>>>>>> // recognize
>> >>>>>>> pTess->SetImage(pix);
>> >>>>>>> }
>> >>>>>>> while (FALSE);
>> >>>>>>>
>> >>>>>>> // cleanup
>> >>>>>>> // pTess->Clear();
>> >>>>>>> // pTess->End();
>> >>>>>>> delete pTess;
>> >>>>>>> pTess = NULL;
>> >>>>>>> pixDestroy(&pix);
>> >>>>>>>
>> >>>>>>> return TRUE;
>> >>>>>>> }
>> >>>>>>>
>> >>>>>>>
>> >>>>>>> Is there anything wrong here ? Why is increasing RAM while I am
>> using tesseract ?
>> >>>>>>>
>> >>>>>> --
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