Not getting font information when we are using engine type OEM_LSTM_ONLY

[Supriya Das]

Hi All,

When i am trying to get information of word wise font attributes not getting result. I choose ocr engine as a OEM_LSTM_ONLY.  If i choose OEM_TESSERACT_ONLY then getting  correct result. Please suggest. Thanks in advance. 

tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();

// Initialize tesseract-ocr with English, without specifying tessdata path

if(api->Init(NULL, "eng", tesseract::OEM_LSTM_ONLY)) {

fprintf(stderr, "Could not initialize tesseract.\n");

exit(1);

}

//api->SetVariable("save_blob_choices", "T");

//api->SetVariable("tessedit_char_whitelist","0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./-");

//api->SetVariable("tessedit_ocr_engine_mode","10");

api->SetPageSegMode(tesseract::PSM_AUTO_ONLY);

api->SetVariable("chop_enable", "1");

api->SetImage((uchar*)Result.data,Result.cols,Result.rows,1,Result.cols);

time(& Start);

char* out = api->GetUTF8Text();

time(& End);

Result.release();

dif = difftime(End,Start);

printf("\nTesseract Processing Time  %lf\n",dif);

// Tesseract bounding box finding Word Wise

time(& Start);

tesseract::ResultIterator* ri = api->GetIterator();

char* word;

const char *font_name;

bool bold, italic, underlined, monospace, serif, smallcaps;

int pointsize, font_id;

if(ri != 0){

do{

      //tesseract::Orientation orientation;

                   //tesseract::WritingDirection writing_direction;

                   //tesseract::TextlineOrder textline_order;

                   //float deskew_angle;

                   //ri->Orientation(&orientation,&writing_direction,&textline_order,&deskew_angle);

      word = ri->GetUTF8Text(tesseract::RIL_WORD);

if(word != 0 && word[0] != '\0' && word[1] != ' ' && word[0] != ' '){

float conf = ri->Confidence(tesseract::RIL_WORD);

int x1, y1, x2, y2;

if(conf > 0)

{

font_name = ri->WordFontAttributes(&bold, &italic, &underlined,

&monospace, &serif,

&smallcaps, &pointsize,

&font_id);

ri->BoundingBox(tesseract::RIL_WORD, &x1, &y1, &x2, &y2);

fprintf(fpout,"%s %d %d %d %d %d %d %d %d %d %d %d %d %s\n",word, x1, y1, x2, y2,pointsize,bold,italic,underlined,monospace,serif,smallcaps,font_id,font_name);

}

}

} while((ri->Next(tesseract::RIL_WORD)));

}

[ShreeDevi Kumar]

Currentlt LSTM engine does not provide font info.

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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[Supriya Das]

Thanks. Is there any idea how to change code to get font information by LSTM.

[ShreeDevi Kumar]

Please see related discussion in https://github.com/tesseract-ocr/tesseract/issues/1074

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

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