SetVariable on whitelist but get no luck

[Matthew Scott]

version: 3.05 //I compiled the tesseract305.dll

system: windows 10 x64

I want to only recognize the number, so the code is as follows

        tesseract::TessBaseAPI tess;

   if (tess.Init("e:\\resources\\tesseract\\tessdata","eng",tesseract::OEM_LSTM_ONLY))

    {

              cerr << "OCRTess:could not initialize teseract" << endl;

               return -1;

     }

      tess.SetPageSegMode(tesseract::PageSegMode::PSM_SINGLE_LINE);

  cout<<"setVariable succeed?  "<<tess.SetVariable("tessedit_char_whitelist","0123456789");

       Rect r;

       Mat roi = src(r);//where r is the region of interest

   tess.SetImage((uchar*)roi.data, roi.size().width, roi.size().height,

   roi.channels(), roi.step1());

  tess.Recognize(0);

     text = std::unique_ptr<char[]>(tess.GetUTF8Text()).get();

however, the output still contains the alphabet

[Zdenko Podobný]

OEM_LSTM_ONLY in tesseract 3.05[1]? Really???

[1] https://github.com/tesseract-ocr/tesseract/blob/3.05/ccstruct/publictypes.h#L256

Zdenko

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[Matthew Scott]

I build it from the master branch but not 3.05

however when using 'OEM_CUBE_ONLY`, the satVariable do work.

在 2017年1月5日星期四 UTC+8下午4:17:48，zdenop写道：

OEM_LSTM_ONLY in tesseract 3.05[1]? Really???

[1] https://github.com/tesseract-ocr/tesseract/blob/3.05/ccstruct/publictypes.h#L256

Zdenko

On Thu, Jan 5, 2017 at 9:01 AM, Matthew Scott <beaut...@gmail.com> wrote:

version: 3.05 //I compiled the tesseract305.dll

system: windows 10 x64

I want to only recognize the number, so the code is as follows

        tesseract::TessBaseAPI tess;

   if (tess.Init("e:\\resources\\tesseract\\tessdata","eng",tesseract::OEM_LSTM_ONLY))

    {

              cerr << "OCRTess:could not initialize teseract" << endl;

               return -1;

     }

      tess.SetPageSegMode(tesseract::PageSegMode::PSM_SINGLE_LINE);

  cout<<"setVariable succeed?  "<<tess.SetVariable("tessedit_char_whitelist","0123456789");

       Rect r;

       Mat roi = src(r);//where r is the region of interest

   tess.SetImage((uchar*)roi.data, roi.size().width, roi.size().height,

   roi.channels(), roi.step1());

  tess.Recognize(0);

     text = std::unique_ptr<char[]>(tess.GetUTF8Text()).get();

however, the output still contains the alphabet

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[Zdenko Podobný]

In master there is tesseract 4.0 and cube was removed from it (see e.g. [1]). So setting OEM_CUBE_ONLY has no effect.

[1] https://github.com/tesseract-ocr/tesseract/commit/5c3839bdb42aa45c8d028e533eb0c1d3c9051b06

Zdenko

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