NullPointerException

[meisterplanlos]

Env:

• Audiveris: 5.1.0:4687c3527
• OS: Windows 10 10.0
• Architecture: amd64
• Java VM: Java HotSpot(TM) 64-Bit Server VM (build 25.281-b09, mixed mode)
• OCR Engine: Tesseract OCR, version 3.04.01

Log:
ERROR [IMSLP622774#2-ext (Custom)] TextLine 327 | TextLine with no first word TextLine{ "" conf:NaN}
WARN [IMSLP622774#2-ext (Custom)] SheetStub 845 | Error in performing [SCALE, GRID, HEADERS, STEM_SEEDS, BEAMS, LEDGERS, HEADS, STEMS, REDUCTION, CUE_BEAMS, TEXTS, MEASURES, CHORDS, CURVES, SYMBOLS, LINKS, RHYTHMS, PAGE] java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.lang.NullPointerException
java.util.concurrent.ExecutionException: java.lang.RuntimeException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.audiveris.omr.sheet.SheetStub.doOneStep(SheetStub.java:1111)
at org.audiveris.omr.sheet.SheetStub.reachStep(SheetStub.java:832)
at org.audiveris.omr.sheet.SheetStub.transcribe(SheetStub.java:1026)
at org.audiveris.omr.sheet.ui.BookActions$TranscribeSheetTask.doInBackground(BookActions.java:2094)
at org.audiveris.omr.sheet.ui.BookActions$TranscribeSheetTask.doInBackground(BookActions.java:2077)
at javax.swing.SwingWorker$1.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at javax.swing.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
at org.audiveris.omr.step.AbstractSystemStep.doitPerSystem(AbstractSystemStep.java:221)
at org.audiveris.omr.step.AbstractSystemStep.doit(AbstractSystemStep.java:101)
at org.audiveris.omr.step.Step.doit(Step.java:184)
at org.audiveris.omr.sheet.SheetStub$4.call(SheetStub.java:1101)
at org.audiveris.omr.sheet.SheetStub$4.call(SheetStub.java:1089)
at java.util.concurrent.FutureTask.run(Unknown Source)
... 3 common frames omitted
Caused by: java.lang.NullPointerException: null
at java.awt.geom.Area.contains(Unknown Source)
at org.audiveris.omr.sheet.StaffManager.getStavesOf(StaffManager.java:640)
at org.audiveris.omr.sheet.StaffManager.getClosestStaff(StaffManager.java:547)
at org.audiveris.omr.sheet.SystemInfo.getClosestStaff(SystemInfo.java:486)
at org.audiveris.omr.sheet.SystemInfo.getStaffAtOrAbove(SystemInfo.java:1027)
at org.audiveris.omr.sig.inter.SentenceInter.assignStaff(SentenceInter.java:170)
at org.audiveris.omr.text.TextBuilder.createInters(TextBuilder.java:483)
at org.audiveris.omr.text.TextBuilder.retrieveSystemLines(TextBuilder.java:260)
at org.audiveris.omr.text.TextsStep.doSystem(TextsStep.java:64)
at org.audiveris.omr.text.TextsStep.doSystem(TextsStep.java:42)
at org.audiveris.omr.step.AbstractSystemStep$1.call(AbstractSystemStep.java:193)
at org.audiveris.omr.step.AbstractSystemStep$1.call(AbstractSystemStep.java:176)
at org.audiveris.omr.step.AbstractSystemStep.doitPerSystem(AbstractSystemStep.java:214)
... 8 common frames omitted

[hbitteur]

@meisterplanlos
Could you post your input image file, so that we can reproduce the problem and try to understand what happened?
Thanks in advance.

[meisterplanlos]

Here you go:

[hallvors]

Hi @meisterplanlos , I had a null pointer exception with a very similar stack, and looking into it the reason was I had Tesseract 4.x installed and Audiveris is not compatible with 4.x data files.

To fix this, I downloaded the eng, fra and deu files from https://github.com/tesseract-ocr/tessdata/tree/074c37215b01ab8cc47a0e06ff7356383883d775 (the commit for the last tesseract data 3.x) and placed them in a folder named tessdata, then set TESSDATA_PREFIX environment variable to the parent folder of said tessdata. I tested transcribing the picture above before and after, and it works with this config.

[hallvors]

So this might be considered a duplicate of #273 (but it is closed). #431 is same.