New question #676733 on Sikuli:
https://answers.launchpad.net/sikuli/+question/676733
Hi, I need to capture text (using Tesseract OCR) from a region of the terminal
window of my Oracle VM Vbox.
I'm using Eclipse in Ubuntu 18.04 and have:
- installed opencv (with cmake -D BUILD_SHARED_LIBS=ON .. & make -j4)
and tesseract (with sudo apt-get install tesseract),
- linked libtesseract.so to /usr/lib.
- set LD_LIBRARY_PATH environment variable to the path where
libtesseract.so is.
- Included the latest sikulixapi.jar in my Eclipse Project (and every
sikulix command is working except the OCR part)
To solve the error I've tried (as recommended in
https://stackoverflow.com/questions/46030022/issue-met-when-using-tess4j ):
"uninstalled tesseract version 4 and installed the version 3.04 from the Ubuntu
repositories. I changed the tess4j version in my pom.xml to 3.0.0",
but still get the same error.
Here is the line of my script that produces the error (second line):
region = new Region(273, 129, 73, 250);
String sikuliText = region.text();
Error:
Exception in thread "main" java.lang.UnsatisfiedLinkError: Error looking up
function 'TessPDFRendererCreateTextonly': /usr/lib/libtesseract.so: undefined
symbol: TessPDFRendererCreateTextonly
at com.sun.jna.Function.<init>(Function.java:245)
at com.sun.jna.NativeLibrary.getFunction(NativeLibrary.java:566)
at com.sun.jna.NativeLibrary.getFunction(NativeLibrary.java:542)
at com.sun.jna.NativeLibrary.getFunction(NativeLibrary.java:528)
at com.sun.jna.Native.register(Native.java:1777)
at com.sun.jna.Native.register(Native.java:1648)
at com.sun.jna.Native.register(Native.java:1360)
at net.sourceforge.tess4j.TessAPI1.<clinit>(TessAPI1.java:41)
at org.sikuli.script.TextRecognizer.start(TextRecognizer.java:56)
at org.sikuli.script.TextRecognizer.doOCR(TextRecognizer.java:195)
at org.sikuli.script.TextRecognizer.doOCR(TextRecognizer.java:190)
at org.sikuli.script.Region.text(Region.java:4840)
at TMSconOCR.getTextByOCR(TMSconOCR.java:380)
at TMSconOCR.main(TMSconOCR.java:237)
Am I missing something?
Thanks a lot,
Pedro.
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