Hi Zdenko, It seems the error has solved itself. Surprisingly I copied you example code to my code in C++ and readed the image in Pix format from the disk instead of pass the image directly from the function and now it seems it works, but does not work fine at all. Is there some way to get more accuracy? For example if the image has a B, sometimes tesseract gives me an E, or if it's a 6 tesseract gives me a 5. I tried to train tesseract for my font, but I don't know if I'm doing something wrong because when I try to create the trainedata file, this is empty or gives me an error.
Thank you. El martes, 10 de diciembre de 2013 09:54:36 UTC+1, zdenop escribió: > > 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]<javascript:> > > 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]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> 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] <javascript:>. >> 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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