我正在使用 Tesseract 的 java 包装器 tess4j。我也安装了普通的 Tesseract。我不确定 tess4j 是如何工作的,但由于它带有一个 tessdata 文件夹,我可以假设您会将语言数据文件放在那里。但是,只有当语言数据文件位于“真实”的 tessdata 文件夹(tesseract 随附的文件夹,而不是 tess4j)中时,tess4j 才有效。如果我删除该文件夹,我会收到以下错误消息:
Error opening data file C:\Program Files\Tesseract-OCR\tessdata/jpn.trained
data
Please make sure the TESSDATA_PREFIX environment variable is set to the par
ent directory of your "tessdata" directory.
Failed loading language 'jpn'
Tesseract couldn't load any languages!
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x631259dc, pid=5108, tid=
10148
#
# JRE version: 7.0_06-b24
# Java VM: Java HotSpot(TM) Client VM (23.2-b09 mixed mode, sharing windows
-x86 )
# Problematic frame:
# C [libtesseract302.dll+0x59dc] STRING::strdup+0x467c
#
# Failed to write core dump. Minidumps are not enabled by default on client
versions of Windows
#
# An error report file with more information is saved as:
# D:\School\Programs\OCRTest\v1.0.0\hs_err_pid5108.log
#
# 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.
#
这是否意味着我需要安装 Tesseract 才能使用 tess4j?为什么?或者我的 tess4j tessdata 文件夹可能在错误的位置(它当前与我的 .java 文件一起,tess4j jar 位于我设置了类路径的 lib 文件夹中)。