Use the ResultIterator class for extracting the OCR Result. ETEXT_DESC and EANYCODE_CHAR interfaces are defunct, at least in my experience. Tobi
Am Dienstag, 16. Oktober 2012 16:28:28 UTC+2 schrieb Xinton Bian: > Hello, I'd like to know how Tesseract reallt deal with the recognized > result. Or I need to produce a hocr file and read from it to get position > information, that doesn't sound good.... > > Le lundi 16 juillet 2012 16:43:31 UTC+2, sventech a écrit : >> >> hOCR output includes character location -- look into that. >> --Sven >> >> On Sat, Jul 14, 2012 at 7:07 AM, moka <[email protected]> wrote: >> > I used the source code by "tesseractdotnet", it can get characters >> position. >> > >> > "tesseractdotnet" based-on tesseract-ocr v3.01 r590. >> > >> > When I get the tesseract 3.02 r729 from svn, and use the under code on >> > Windows XP(VS2008), >> > >> > bool succed = api->Recognize(monitor) >= 0; >> > succed return true, >> > int nChars = head->count; >> > the nChars is always zero. >> > how to get characters position in tesseract 3.02 r729? >> > >> > detail code: >> > >> > int main(int argc, char **argv) { >> > >> > char* image1 = "c:\\eurotext.tif"; >> > char* lang1 = "eng"; >> > int psm = 3; >> > char* text = new char[1024]; >> > int rc = 0; >> > >> > rc = image2text(image1,lang1,psm,text); >> > >> > printf("text: %s\n", text); >> > } >> > >> > int image2text(const char* image,const char* lang,int psm,char* >> textout){ >> > tesseract::PageSegMode pagesegmode = tesseract::PSM_AUTO; >> > pagesegmode = static_cast<tesseract::PageSegMode>(psm); >> > >> > tesseract::TessBaseAPI api; >> > >> > // initialize monitor >> > ETEXT_DESC* monitor = NULL; >> > ETEXT_DESC* head = NULL; >> > int fixed_buffer_factor = 100; >> > int MAX_CHAR_RECOGNIZE = 32000; >> > int n = 127; >> > monitor = new ETEXT_DESC[fixed_buffer_factor*n]; >> > monitor[1].more_to_come = 127; >> > monitor[1].count = 0; >> > >> > >> > // initialize api >> > int rc = api.Init(image, lang, tesseract::OEM_DEFAULT); >> > if (rc) { >> > // fprintf(stderr, "Could not initialize tesseract.\n"); >> > return 1; >> > } >> > >> > // We have 2 possible sources of pagesegmode: a config file and >> > // the command line. For backwards compatability reasons, the >> > // default in tesseract is tesseract::PSM_SINGLE_BLOCK, but the >> > // default for this program is tesseract::PSM_AUTO. We will let >> > // the config file take priority, so the command-line default >> > // can take priority over the tesseract default, so we use the >> > // value from the command line only if the retrieved mode >> > // is still tesseract::PSM_SINGLE_BLOCK, indicating no change >> > // in any config file. Therefore the only way to force >> > // tesseract::PSM_SINGLE_BLOCK is from the command line. >> > // It would be simpler if we could set the value before Init, >> > // but that doesn't work. >> > if (api.GetPageSegMode() == tesseract::PSM_SINGLE_BLOCK) >> > api.SetPageSegMode(pagesegmode); >> > >> > FILE* fin = fopen(image, "rb"); >> > if (fin == NULL) { >> > // printf("Cannot open input file: %s\n", image); >> > return 2; >> > } >> > fclose(fin); >> > >> > PIX *pixs; >> > if ((pixs = pixRead(image)) == NULL) { >> > // printf("Unsupported image type.\n"); >> > return 3; >> > } >> > >> > // detect characters >> > api.Clear(); >> > api.ClearAdaptiveClassifier(); >> > try >> > { >> > api.SetImage(pixs); >> > bool succed = api.Recognize(monitor) >= 0; >> > char* text = api.GetUTF8Text(); >> > sprintf(textout, "%s", text); >> > delete text; >> > >> > head = &monitor[1]; >> > >> > int lineIndex=0; >> > int lineIdx = 0; >> > int nChars = head->count; >> > int i = 0; >> > while (i < nChars) >> > { >> > // typedef struct { /*single character */ >> > // It should be noted that the format for char_code for >> version >> > 2.0 and beyond >> > // is UTF8 which means that ASCII characters will come out >> as >> > one structure but >> > // other characters will be returned in two or more >> instances of >> > this structure >> > // with a single byte of the UTF8 code in each, but each >> will >> > have the same >> > // bounding box. Programs which want to handle languagues >> with >> > different >> > // characters sets will need to handle extended characters >> > appropriately, but >> > // *all* code needs to be prepared to receive UTF8 coded >> > characters for >> > // characters such as bullet and fancy quotes. >> > // uinT16 char_code; /*character itself */ >> > // inT16 left; /*of char (-1) */ >> > // inT16 right; /*of char (-1) */ >> > // inT16 top; /*of char (-1) */ >> > // inT16 bottom; /*of char (-1) */ >> > // inT16 font_index; /*what font (0) */ >> > // uinT8 confidence; /*0=perfect, 100=reject >> > (0/100) */ >> > // uinT8 point_size; /*of char, 72=i inch, >> (10) */ >> > // inT8 blanks; /*no of spaces before >> this >> > char (1) */ >> > // uinT8 formatting; /*char formatting (0) */ >> > //} EANYCODE_CHAR; /*single character */ >> > >> > >> > EANYCODE_CHAR* ch = &(head + i)->text[0]; >> > printf("%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,", ch->char_code, >> > ch->left, ch->top, ch->right, ch->bottom, ch->font_index, >> ch->confidence, >> > ch->point_size, ch->formatting); >> > i++; /*go to next char*/ >> > } /* end while */ >> > >> > } >> > catch (...) >> > { >> > >> > } >> > >> > head = NULL; >> > monitor = NULL; >> > >> > pixDestroy(&pixs); >> > >> > return 0; >> > } >> > >> > >> > >> > >> > >> > >> > -- >> > 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 >> >> >> >> -- >> ``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. 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