Question

我们正在使用Tess4J / Tesseract在webapp上执行OCR。在Windows上，每个工作都很好，但是当部署在Linux机器上时，程序崩溃，杀死glassfish进程并输出转储文件：hs_err_pidXXXXX.log。

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f9fdd5322a0, pid=10412, tid=140324597778176
#
# JRE version: Java(TM) SE Runtime Environment (7.0_75-b13) (build 1.7.0_75-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.75-b04 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C  [libtesseract.so+0x2532a0]  ERRCODE::error(char const*, TessErrorLogCode, char const*, ...) const+0x190
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

---------------  T H R E A D  ---------------

Current thread (0x00007fa00c42d800):  JavaThread "pool-26-thread-1" [_thread_in_native, id=10705, stack(0x00007f9fddbdc000,0x00007f9fddcdd000)]

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x0000000000000000

tesseract命令可以正常地将图像转换为文本。我们尝试过LC_NUMERIC解决方案，但仍然无效。

我们的Tesseract java代码就是这样的

File file; // ...
boolean hOcr; // ...
Rectangle rec; // ...
OcrResult result;
//Tesseract instance = Tesseract.getInstance();
Tesseract1 instance = new Tesseract1();
try {
    instance.setHocr(hOcr);            
    ImageIO.scanForPlugins();
    String res;
    if (rec == null) {
        res = instance.doOCR(file);
    } else {
        res = instance.doOCR(file, rec);
    }
    result = new OcrResult(res, 0, true);
} catch (TesseractException e) {
    log.error("error tesseract", e);
    // process error
} catch (Error e) {
    log.error("error tesseract", e);
    // process error
}

我们的规格

Tesseract 3.02.02
Tess4J
CentoOS 6.4
Java 1.7
Glassfish 4.1

有人有任何建议吗？

Answer 1

原来是一系列因素：

在Glassfish中的服务器JVM设置上将数据路径设置为TESSDATA_PREFIX
最重要的是，由于已知的found here，在Tesseract上应用补丁（issue concerning system locale，为作者提供信用） - 不知何故错误修复未在最新版本中应用

Linux上的Tesseract崩溃了Glassfish

1 个答案: