I understand ;-) But "Error: Illegal min or max specification!" during tesseract init is (usually) related to using of locale. That was the reason why I started this.
If you get "wrong" result with your code and good with executable => there must be problem in your code. This is first check I do (custom code vs executable). So you need to test each step what it wrong. If "clean" version (tesseract+leptonica) code works, than I would include opencv. If you need quick check if "transfer" from opencv to tesseract is ok, then uset GetThresholdedImage()[1] from tesseract api and than save result PIX with leptonica function pixWrite [2]. [1] https://code.google.com/p/tesseract-ocr/source/browse/trunk/api/baseapi.h#357 [2] http://tpgit.github.io/Leptonica/leptprotos_8h.html#a5a9a534e77de5e57d74ff3d678ca59e0 Zdenko On Tue, Dec 10, 2013 at 9:21 AM, adrian company <[email protected]> wrote: > Let me explain, I'm using opencv to preprocess the image and obtain the > image of a license plate (binaria2.png, for example), then I want to > execute tesseract to obtain the characters from that license plate. I don't > mind if the language is in Spanish or any other language. I' ve changed the > function I had with the function you provided me, using leptonica and Pix, > instead of Mat and when I've runned the program an error has been > displayed. The error is the error I showed before. > > Error: Illegal min or max specification! > signal_termination_handler: Error:Signal_termination_handler called: Code > 5002 > > About the PSM, I've tried with more than 7, also tried with Single line, > Auto PSM, Single Block.... and I obtain the same result. When I obtain some > chararcters these are not correct. > For example, in a license plate like: 0211 JCW the result I obtained > yestarday was: EEEEEEIIIE or something like that, I don't remember now. > > If I execute tesseract from the console in the same image I obtain the > desired result, that's why I'm getting crazy with this. I don't understand > the reason. > > Thank you. > > > El martes, 10 de diciembre de 2013 08:47:22 UTC+1, zdenop escribió: >> >> Can you please provide exact error message? If it is in spain because of >> your locale, try to run >> LC_ALL=C ./api_test >> >> What is the result of tesseract executable (tesseract binaria2.png >> binaria2 -psm 7)? >> >> >> Zdenko >> >> >> On Tue, Dec 10, 2013 at 8:37 AM, adrian company <[email protected]> wrote: >> >>> I'm using Ubuntu 12.04, with tesseract version 3.02 and using Eclipse CDT >>> >>> El martes, 10 de diciembre de 2013 08:17:31 UTC+1, zdenop escribió: >>>> >>>> What OS you use? >>>> Which tesseract version? >>>> What compiller you used? >>>> >>>> Zdenko >>>> >>>> >>>> On Tue, Dec 10, 2013 at 7:41 AM, adrian company <[email protected]>wrote: >>>> >>>>> Hi Zdenko, >>>>> I've tried to use the code you posted here for using leptonica, and >>>>> that gives me an error saying something about min, max specificacion >>>>> (Error: Illegal min or max specification! >>>>> signal_termination_handler:Error:Signal_termination_handler >>>>> called:Code 5002) >>>>> >>>>> I've changed the OCR.SetRectangle and the same error displayed, I've >>>>> tried also with another image and the same. >>>>> >>>>> El lunes, 9 de diciembre de 2013 22:02:13 UTC+1, zdenop escribió: >>>>>> >>>>>> >>>>>> 1. Instead of function listing it is better to provide small test >>>>>> case. It save time to testers... >>>>>> 2. Skip not "relevant" code (e.g. if you are testing tesseract >>>>>> api, open image with leptonica function and not with opencv...) >>>>>> 3. You need to fix perspective of image first, so you have some >>>>>> border around text. See I did it in gimp, but maybe you can do it in >>>>>> opencv >>>>>> too... >>>>>> >>>>>> >>>>>> >>>>>> Zdenko >>>>>> >>>>>> >>>>>> On Mon, Dec 9, 2013 at 1:15 PM, adrian company <[email protected]>wrote: >>>>>> >>>>>>> Hi Nick, >>>>>>> I've took a look at api/tesseractmain.cpp as you recommend me, but I >>>>>>> cannot find anything wrong, I think. Anyway, I could post my program >>>>>>> here >>>>>>> and try to guess what is going on with your help. >>>>>>> This is my method: >>>>>>> ___________________________________________________________________ >>>>>>> void recognizeChar(Mat imagen){ >>>>>>> >>>>>>> /*INITIALIZE (TESSERACT)*/ >>>>>>> putenv("TESSDATA_PREFIX=/usr/local/share/"); >>>>>>> setlocale(LC_NUMERIC, "C"); >>>>>>> tesseract::TessBaseAPI OCR; >>>>>>> >>>>>>> if (OCR.Init(NULL, "spa")){ >>>>>>> fprintf( stderr, "cannot could initialize tesseract.... \n" >>>>>>> ); >>>>>>> exit(1); >>>>>>> } >>>>>>> /*CONFIGURING*/ >>>>>>> OCR.SetPageSegMode(tesseract::PSM_SINGLE_LINE); >>>>>>> api.SetVariable("tessedit_char_whitelist", " >>>>>>> ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ");//lista blanca >>>>>>> api.SetVariable("tessedit_char_blacklist" , "<> >>>>>>> abcdefghijklmnopqtrstuvwxyz./!¡$%&?¿,;+-#");//lista negra >>>>>>> OCR.SetImage(imagen.data, imagen.size().width, >>>>>>> imagen.size().height, imagen.channels(), imagen.step1()); >>>>>>> OCR.TesseractRect(imagen.data, 0, imagen.step1(), 0, 0, >>>>>>> imagen.cols, imagen.rows); >>>>>>> >>>>>>> /*GETTING READED TEXT*/ >>>>>>> char* texto = OCR.GetUTF8Text(); >>>>>>> string t1=texto; >>>>>>> t1.erase( remove(t1.begin(), t1.end(), '\n'), t1.end() ); >>>>>>> cout << "TEXTO: "<<t1.c_str() <<endl; >>>>>>> } >>>>>>> ____________________________________________________________ >>>>>>> ___________ >>>>>>> Thank you all. >>>>>>> >>>>>>> El martes, 3 de diciembre de 2013 11:29:58 UTC+1, Nick White >>>>>>> escribió: >>>>>>> >>>>>>>> Hi Adrian, >>>>>>>> >>>>>>>> Well then your C++ program must be wrong in some way. The command >>>>>>>> line version doesn't do anything special, it just uses the API like >>>>>>>> anything else. Take a look at api/tesseractmain.cpp to check how >>>>>>>> your API usage differs, to find your bug. >>>>>>>> >>>>>>>> Nick >>>>>>>> >>>>>>>> On Tue, Dec 03, 2013 at 01:16:40AM -0800, adrian company wrote: >>>>>>>> > Hi Sventech, >>>>>>>> > I've tested the image with the command line version and I get the >>>>>>>> same result >>>>>>>> > as you. But when I use my own software in C++ I cannot obtain the >>>>>>>> same result, >>>>>>>> > simply get nothing. Currently I am using PSM_SINGLE_LINE, but >>>>>>>> I've said before >>>>>>>> > I've tried all the page seg modes. >>>>>>>> > I don't know what is wrong. I've reinstalled tesseract and do the >>>>>>>> same. >>>>>>>> > >>>>>>>> > >>>>>>>> > El martes, 3 de diciembre de 2013 07:29:11 UTC+1, adrian company >>>>>>>> escribió: >>>>>>>> > >>>>>>>> > And about the page seg I've tried with all the page seg but I >>>>>>>> still get >>>>>>>> > anything. >>>>>>>> > >>>>>>>> > El lunes, 2 de diciembre de 2013 16:13:17 UTC+1, sventech >>>>>>>> escribió: >>>>>>>> > >>>>>>>> > I get >>>>>>>> > V! 2\"03ENl >>>>>>>> > so you could postprocess that kind of thing to get better >>>>>>>> results -- >>>>>>>> > you need to eliminate the black border for best results. >>>>>>>> You may need >>>>>>>> > to remove noise. What page seg mode are you using? Make >>>>>>>> sure you test >>>>>>>> > with the command line version before you try your own. >>>>>>>> Also, I'm using >>>>>>>> > the latest version 3.02.02 >>>>>>>> > --Sven >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > On Mon, Dec 2, 2013 at 6:18 AM, adrian company < >>>>>>>> [email protected]> >>>>>>>> > wrote: >>>>>>>> > >>>>>>>> > Hi again, I've tried to deskew the first image and >>>>>>>> pass it to >>>>>>>> > tesseract greater, but I have the same result, the >>>>>>>> numbers and >>>>>>>> > letters are not recognized by tesseract. I post an >>>>>>>> image where you >>>>>>>> > can see how is my image now. >>>>>>>> > Any idea??? >>>>>>>> > Thanks in advance again. >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > El jueves, 31 de octubre de 2013 07:22:53 UTC+1, >>>>>>>> adrian company >>>>>>>> > escribió: >>>>>>>> > >>>>>>>> > Thanks Sventech, I'll try to deskew the first, >>>>>>>> i'm using opencv >>>>>>>> > to prepare the image so I cannot use any program >>>>>>>> to prepare it. >>>>>>>> > I've tried to rotate the image and pass it to >>>>>>>> tesseract with >>>>>>>> > text in horizontal but tesseract outputs the >>>>>>>> same. I will also >>>>>>>> > try to pass it to in png format and I will see >>>>>>>> the result. >>>>>>>> > >>>>>>>> > >>>>>>>> > On Wednesday, October 30, 2013 3:21:58 PM UTC+1, >>>>>>>> sventech >>>>>>>> > wrote: >>>>>>>> > >>>>>>>> > In the first image you need to deskew it. >>>>>>>> There are free >>>>>>>> > programs for preparing the image, The second >>>>>>>> image appears >>>>>>>> > to be too low resolution (or letter pixel >>>>>>>> height to be >>>>>>>> > precise). Approx. 200-300dpi is ideal for >>>>>>>> tesseract's >>>>>>>> > default training. Also, JPEG is not a good >>>>>>>> format for text. >>>>>>>> > Internally it will convert to TIFF or PNG. >>>>>>>> > >>>>>>>> > >>>>>>>> > On Wed, Oct 30, 2013 at 6:50 AM, adrian >>>>>>>> company < >>>>>>>> > [email protected]> wrote: >>>>>>>> > >>>>>>>> > Hi all, I am trying to write a software >>>>>>>> to recognize >>>>>>>> > some text from an image, but when I >>>>>>>> binarize the image >>>>>>>> > and I call to tesseract engine, this does >>>>>>>> not recognize >>>>>>>> > text in image. Does somebody know why >>>>>>>> text it is not >>>>>>>> > recognized? Must I do something extra to >>>>>>>> recognize? >>>>>>>> > I attach the image I am trying to >>>>>>>> recognize text >>>>>>>> > (license plate). In this attached image >>>>>>>> the tesseract >>>>>>>> > output is nothing. >>>>>>>> > >>>>>>>> > I've also tried to recognize text from >>>>>>>> another image >>>>>>>> > (Fuma) and in this case the output is: "L >>>>>>>> I". >>>>>>>> > >>>>>>>> > Could anybody help me? >>>>>>>> > >>>>>>>> > What could be happening? >>>>>>>> > >>>>>>>> > >>>>>>>> > Thanks in advance. >>>>>>>> > Adri >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > -- >>>>>>>> > -- >>>>>>>> > 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 >>>>>>>> > >>>>>>>> > --- >>>>>>>> > You received this message because you are >>>>>>>> subscribed to >>>>>>>> > the Google Groups "tesseract-ocr" group. >>>>>>>> > To unsubscribe from this group and stop >>>>>>>> receiving >>>>>>>> > emails from it, send an email to >>>>>>>> > [email protected]. >>>>>>>> > For more options, visit >>>>>>>> https://groups.google.com/grou >>>>>>>> > ps/opt_out. >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > -- >>>>>>>> > ``All that is gold does not glitter, >>>>>>>> > not all those who wander are lost; >>>>>>>> > the old that is strong does not wither, >>>>>>>> > deep roots are not reached by the frost. >>>>>>>> > From the ashes a fire shall be woken, >>>>>>>> > a light from the shadows shall spring; >>>>>>>> > renewed shall be blade that was broken, >>>>>>>> > the crownless again shall be king.” >>>>>>>> > >>>>>>>> > -- >>>>>>>> > -- >>>>>>>> > 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 >>>>>>>> > >>>>>>>> > --- >>>>>>>> > You received this message because you are subscribed >>>>>>>> to the Google >>>>>>>> > Groups "tesseract-ocr" group. >>>>>>>> > To unsubscribe from this group and stop receiving >>>>>>>> emails from it, >>>>>>>> > send an email to [email protected]. >>>>>>>> > For more options, visit https://groups.google.com/ >>>>>>>> groups/opt_out. >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > -- >>>>>>>> > ``All that is gold does not glitter, >>>>>>>> > not all those who wander are lost; >>>>>>>> > the old that is strong does not wither, >>>>>>>> > deep roots are not reached by the frost. >>>>>>>> > From the ashes a fire shall be woken, >>>>>>>> > a light from the shadows shall spring; >>>>>>>> > renewed shall be blade that was broken, >>>>>>>> > the crownless again shall be king.” >>>>>>>> > >>>>>>>> > -- >>>>>>>> > -- >>>>>>>> > 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 >>>>>>>> > >>>>>>>> > --- >>>>>>>> > You received this message because you are subscribed to the >>>>>>>> Google Groups >>>>>>>> > "tesseract-ocr" group. >>>>>>>> > To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email >>>>>>>> > to [email protected]. >>>>>>>> > For more options, visit https://groups.google.com/groups/opt_out. >>>>>>>> >>>>>>>> >>>>>>> -- >>>>>>> -- >>>>>>> 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 >>>>>>> >>>>>>> --- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "tesseract-ocr" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>>> >>>>>> >>>>>> -- >>>>> -- >>>>> 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 >>>>> >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "tesseract-ocr" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>> >>>> -- >>> -- >>> 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 >>> >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "tesseract-ocr" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> -- > -- > 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 > > --- > You received this message because you are subscribed to the Google Groups > "tesseract-ocr" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. 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