CODEWITHSUNDEEP
linuxtomcatubuntutesseracttess4j
Daniel Rodriguez
Daniel Rodriguez

Reputation: 176

Tess4J on Ubuntu Linux, UnsatisfiedLinkError

I am getting a getting an UnsatisfiedLinkError using Tess4j in Tomcat+Ubuntu(Linux)

java.lang.UnsatisfiedLinkError: Error looking up function 'TessBaseAPICreate': /usr/lib/libtesseract.so.3.0.2: undefined symbol: TessBaseAPICreate
at com.sun.jna.Function.<init>(Function.java:208)
at com.sun.jna.NativeLibrary.getFunction(NativeLibrary.java:536)
at com.sun.jna.NativeLibrary.getFunction(NativeLibrary.java:513)
at com.sun.jna.NativeLibrary.getFunction(NativeLibrary.java:499)

Library is installed via apt-get install tesseract-ocr, Tess4j version is 2.0.0, everything seems to work on a MacOS/OracleJDK1.7(64bits), but not in Ubuntu/Linux/OracleJDK1.7(64bits)

Some stackoverflow-search gives clues about wrong versions or library not present, but the library is right there...

ls -al /usr/lib/libtesseract.so.3.0.2
-rw-r--r-- 1 root root 4219544 Feb 25  2012 /usr/lib/libtesseract.so.3.0.2

Someone with a solution or a hint?

Upvotes: 2

Views: 1795

Answers (2)

Jayhello
Jayhello

Reputation: 6602

this may be the version of tesseract is not compatible to ubuntu version

as to me my program runs in win10 and ubuntu 16 has no error ,but when in ubuntu 12.04 this error occurs

maybe I install tesseract by the command

sudo apt-get install tesseract-ocr

but indeed in ubuntu 12 after i install by the flow 

sudo apt-get install libpng-dev libjpeg-dev libtiff-dev zlib1g-dev
sudo apt-get install gcc g++
sudo apt-get install autoconf automake libtool checkinstall

Install Leptonica from source. The latest version as of writing is 1.69.

wget http://www.leptonica.org/source/leptonica-1.69.tar.gz  (if you can't,download leptonica-1.69.tar.gz from the internet)
tar -zxvf leptonica-1.69.tar.gz
cd leptonica-1.69
./configure
make
sudo checkinstall
sudo ldconfig

Then install Tesseract OCR from source.

wget https://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.02.02.tar.gz
(maybe you can download tesseract-ocr-3.02.02.tar.gz from the internet and then upload to the server )
tar -zxvf tesseract-ocr-3.02.02.tar.gz
cd tesseract-ocr
./autogen.sh
./configure
make (this may take a while)
sudo make install
sudo ldconfig

after this i solve this problem

Upvotes: 0

nguyenq
nguyenq

Reputation: 8345

Tess4J 2.0 is compatible with Tesseract 3.03RC. Since yours is 3.02, you'd need Tess4J 1.x version.

Upvotes: 1

Related Questions