error when training

[Jingjing Lin]

I was going through the training turotial below

https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00

In part training from scratch, I copied the command in the link above and ran:

mkdir -p ~/tesstutorial/engoutput
lstmtraining --debug_interval 100 \
  --traineddata ~/tesstutorial/engtrain/eng/eng.traineddata \
  --net_spec '[1,36,0,1 Ct3,3,16 Mp3,3 Lfys48 Lfx96 Lrx96 Lfx256 O1c111]' \
  --model_output ~/tesstutorial/engoutput/base --learning_rate 20e-4 \
  --train_listfile ~/tesstutorial/engtrain/eng.training_files.txt \
  --eval_listfile ~/tesstutorial/engeval/eng.training_files.txt \
  --max_iterations 5000 &>~/tesstutorial/engoutput/basetrain.log

but it ends very quickly and in the log file I found something:

Exception in thread "main" java.lang.NoClassDefFoundError: org/piccolo2d/PNode

        at com.google.scrollview.ScrollView.processInput(ScrollView.java:340)

        at com.google.scrollview.ScrollView.IOLoop(ScrollView.java:124)

        at com.google.scrollview.ScrollView.main(ScrollView.java:401)

Caused by: java.lang.ClassNotFoundException: org.piccolo2d.PNode

        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

        ... 3 more

sh: 1: kill: No such process

Created window ConvNL of size 1305, 656

Created window Lfys48 of size 530, 2000

 

What's the problem here?

My version is 

tesseract 5.0.0-alpha-152-g17c8a

 leptonica-1.78.0

  libjpeg 8d (libjpeg-turbo 1.4.2) : libpng 1.2.54 : libtiff 4.0.6 : zlib 1.2.8

 Found AVX2

 Found AVX

 Found SSE

Thanks for the help!

Jingjing

[Jingjing Lin]

The above error seems to be solved, now the problem I have is:

Starting sh -c "trap 'kill %1' 0 1 2 ; java -Xms1024m -Xmx2048m -jar /home/ubuntu/leptonica-1.78.0/tesserac\

t/java/ScrollView.jar & wait"

Socket started on port 8461

Created window Convolve of size 1997, 580

Client connected

Created window ConvNL of size 1305, 656

Exception in thread "main" java.awt.HeadlessException:

No X11 DISPLAY variable was set, but this program performed an operation which requires it.

        at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:204)

        at java.awt.Window.<init>(Window.java:536)

        at java.awt.Frame.<init>(Frame.java:420)

        at javax.swing.JFrame.<init>(JFrame.java:233)

        at com.google.scrollview.ui.SVWindow.<init>(SVWindow.java:204)

        at com.google.scrollview.ScrollView.processInput(ScrollView.java:344)

        at com.google.scrollview.ScrollView.IOLoop(ScrollView.java:124)

        at com.google.scrollview.ScrollView.main(ScrollView.java:401)

sh: 1: kill: No such process

Created window Lfys48 of size 530, 2000

在 2019年6月10日星期一 UTC-4下午2:56:38，Jingjing Lin写道：

[Jingjing Lin]

turns out this is a ubuntu server display issue. After adding -Y in ssh command when connecting to ubuntu server it works! In general this commands enables X11 Display in ubuntu server. The link below is helpful:

https://unix.stackexchange.com/questions/12755/how-to-forward-x-over-ssh-to-run-graphics-applications-remotely

https://uisapp2.iu.edu/confluence-prd/pages/viewpage.action?pageId=280461906

在 2019年6月10日星期一 UTC-4下午3:18:16，Jingjing Lin写道：