Tesseract OCR 在線程中使用時崩潰 (Tesseract OCR crash when used in thread)

問題描述

Tesseract OCR 在線程中使用時崩潰 (Tesseract OCR crash when used in thread)

我用 tesseract ocr 遇到了一個奇怪的問題。一切正常，就像 ocr 部分一樣。字符被正確識別。但它在完成所有計算後崩潰，這只發生在我在線程中運行代碼時。

void server(boost::asio::io_service & io_service, unsigned short port)
    {

        tcp::acceptor a(io_service, tcp::endpoint(tcp::v4(), port));
        for (;;)
        {

            a.accept(sock);

            //boost::thread t(session, boost::ref(sock));
            //t.detach();
            std::thread(session, std::move(sock)).detach();
        }
    }

void session(tcp::socket & sock)
{
        tesseract::TessBaseAPI api;
        if (api.Init("", "eng"))
        {
            fprintf(stderr, "Could not initialize tesseract.\n");
            exit(1);
        }
        for (int i = 0; i < 81; i++)
        {
            if (!sudokuDatainside[i].empty())
            {
                api.SetImage((uchar*)sudokuDatainside[i].data, sudokuDatainside[i].size().width, sudokuDatainside[i].size().height, sudokuDatainside[i].channels(), sudokuDatainside[i].step1());
                // Get OCR result

                outText = api.GetUTF8Text();
                std::cout << outText << std::endl;
            }
            else
            {
                std::cout << "Nothing ‑ " << i << std::endl;
            }
        }
        api.End();
}

編輯：似乎它不是 api.End() 的問題。即使我不調用此方法，線程結束時程序也會崩潰... tesseract 是否支持線程？

參考解法

方法 1:

After some hours of trying to find a solution. I came across an error during building the debug libs. So rebuilding the tesseract debug libs solved the problem. Here are the instructions i used: https://github.com/charlesw/tesseract‑vs2012

(by Nils J.、Nils J.)

參考文件

1. Tesseract OCR crash when used in thread (CC BY‑SA 2.5/3.0/4.0)