Recognize a bitmap is error

[Nguyen Nhat Khanh]

Hi All,

I used the Tesseract 4.0 to extract text from a bitmap but i get a error when i call Recognize method.

=> Error : Assertion failed: index >= 0 && index < size_used_, file E:\Libs\Text\tesseract-master\src\ccutil\genericvector.h, line 720

Can you help me?

My Code :

        tesseract::TessBaseAPI tess;

const int init_failed = tess.Init("e:\\Libs\\Text\\tesseract-master\\tessdata\\", "eng");

if (init_failed == -1)

{

std::cout << "OCRTesseract: Could not initialize tesseract." << std::endl;

return 1;

}

// setup

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

tess.SetVariable("save_best_choices", "T");

tess.SetOutputName("out");

// read image

auto pixs = pixRead("C:\\Users\\NhatKhanh\\Desktop\\IMG_1345.bmp");

if (!pixs)

{

std::cout << "Cannot open input file." << std::endl;

return 1;

}

// recognize

tess.SetImage(pixs);

tess.Recognize(0);

// get result and delete[] returned char* string

std::string szText = std::string(tess.GetUTF8Text());

std::cout << std::unique_ptr<char[]>(tess.GetUTF8Text()).get() << std::endl;

// cleanup

tess.Clear();

pixDestroy(&pixs);