Tesseract gives the same results in cube mode, is this normal/common?

[fsbo.c...@gmail.com]

api->SetVariable("tessedit_ocr_engine_mode", "0"); gives the same exact results as api->SetVariable("tessedit_ocr_engine_mode", "1");

are there additional steps that need to be taken to set up cube mode? I am just using it on english text so I haven't done any training of my own for either mode.

[fsbo.c...@gmail.com]

Further Detail:

        int value123221;

        api->GetIntVariable("tessedit_ocr_engine_mode", &value123221);

        std::cout << value123221 << std::endl;

        std::cout << "Val1" << std::endl;

        api->SetVariable("tessedit_ocr_engine_mode", "3");

        api->GetIntVariable("tessedit_ocr_engine_mode", &value123221);

        std::cout << value123221<< std::endl;

        std::cout << "Val2" << std::endl;

The output from this is:

0

Val1

0

Val2

This means that the setvariable function does not appear to be working for me ... no idea why though.

[fsbo.c...@gmail.com]

You may notice tessedit_ocr_engine_mode being set to 3 which is of course outside of the accepted range of 0-2, it does not work in the accepted range either, printing 0 just the same. Also, when I call  api->SetVariable("tessedit_char_whitelist", "0123456789abc ... 

it works just fine.

[zdenko podobny]

tessedit_ocr_engine_mode is init-only[1] parameter (INT_INIT_MEMBER [2]) e.g. you can set it only during initialization of tesseract. Otherwise it has no effect.

[1] https://github.com/tesseract-ocr/tesseract/wiki/ControlParams#init-only

[2] https://github.com/tesseract-ocr/tesseract/blob/41478fd5a1f713f56ec51134d2598700b7f1463c/ccmain/tesseractclass.cpp#L79

Zdenko

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