Hi Christian,
I try to run the Tess4J example workflow with the provided images. KNIME log tells me the following:
2016-07-25 16:30:38,442 : INFO : main : StringHistory : : : History file '/Users/friedrich/knime-workspace/.metadata/knime/history_database_drivers.txt' does not exist.
2016-07-25 16:30:38,442 : INFO : main : StringHistory : : : History file '/Users/friedrich/knime-workspace/.metadata/knime/history_database_urls.txt' does not exist.
2016-07-25 16:30:38,442 : DEBUG : main : DatabaseConnectionSettings : : : Settings database timeout to 15 seconds
2016-07-25 16:30:38,514 : DEBUG : main : DatabaseConnectionSettings : : : Database concurrency (sync via database connection) is true.
2016-07-25 16:30:38,514 : DEBUG : main : KNIMECorePlugin : : : Setting KNIME max thread count to 8
2016-07-25 16:30:38,515 : DEBUG : main : KNIMECorePlugin : : : Setting KNIME temp dir to "/Users/friedrich/Desktop/KNIME_temp_space"
2016-07-25 16:30:38,532 : INFO : KNIME-Worker-2 : ExplorerMountTable : : : Mounted Explorer Temp Space 'knime-temp-space' - com.knime.explorer.tempspace
2016-07-25 16:30:38,558 : INFO : main : KNIMECorePlugin : : : Setting console view log level to WARN
2016-07-25 16:30:44,147 : WARN : ModalContext : VMFileLocker : : : Directory '/Users/friedrich/knime-workspace/384well_spheroid_class' does not exist, cannot lock it
2016-07-25 16:30:44,148 : INFO : ModalContext : LoadWorkflowRunnable : : : Unable to load workflow "384well_spheroid_class"
Location does not exist.
2016-07-25 16:30:47,387 : ERROR : ModalContext : NativeLibBundleActivator : Tess4J : 0 : /Applications/KNIME 3.1.2.app/Contents/Eclipse/plugins/org.knime.knip.tess4j.bin.macosx.amd64_1.3.0.v201607040700/lib/macosx/amd64/libtesseract.3.dylib: dlopen(/Applications/KNIME 3.1.2.app/Contents/Eclipse/plugins/org.knime.knip.tess4j.bin.macosx.amd64_1.3.0.v201607040700/lib/macosx/amd64/libtesseract.3.dylib, 1): Library not loaded: /usr/local/lib/liblept.4.dylib
Referenced from: /Applications/KNIME 3.1.2.app/Contents/Eclipse/plugins/org.knime.knip.tess4j.bin.macosx.amd64_1.3.0.v201607040700/lib/macosx/amd64/libtesseract.3.dylib
Reason: image not found
2016-07-25 16:30:47,387 : ERROR : ModalContext : NativeLibBundleActivator : Tess4J : 0 : Could not load org.knime.knip.tess4j
2016-07-25 16:30:52,642 : INFO : KNIME-Worker-1 : KNIPLogService : Image Reader : 0:8 : Verifying GIF format
2016-07-25 16:30:52,642 : INFO : KNIME-Worker-1 : KNIPLogService : Image Reader : 0:8 : Reading dimensions
2016-07-25 16:30:52,648 : INFO : KNIME-Worker-1 : KNIPLogService : Image Reader : 0:8 : Reading data blocks
2016-07-25 16:30:52,743 : INFO : KNIME-Worker-1 : KNIPLogService : Image Reader : 0:8 : Verifying GIF format
2016-07-25 16:30:52,744 : INFO : KNIME-Worker-1 : KNIPLogService : Image Reader : 0:8 : Reading dimensions
2016-07-25 16:30:52,744 : INFO : KNIME-Worker-1 : KNIPLogService : Image Reader : 0:8 : Reading data blocks
2016-07-25 16:30:53,109 : INFO : KNIME-Worker-1 : LocalNodeExecutionJob : Image Reader : 0:8 : Image Reader 0:8 End execute (1 sec)
2016-07-25 16:30:54,107 : INFO : KNIME-Worker-2 : LocalNodeExecutionJob : Image Normalizer : 0:7 : Image Normalizer 0:7 End execute (0 secs)
2016-07-25 16:30:55,094 : ERROR : KNIME-Worker-11 : Tess4JNodeModel : Tess4J : 0:4 : Error initializing Tesseract.
2016-07-25 16:30:55,095 : ERROR : KNIME-Worker-11 : Tess4J : Tess4J : 0:4 : Execute failed: Unable to load library 'tesseract': Native library (darwin/libtesseract.dylib) not found in resource path (/Applications/KNIME 3.1.2.app/Contents/MacOS//../Eclipse/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar)
Currenty I use:
KNIME Analytics Platform 3.2.0.v201607131338
KNIME Image Processing 1.5.1.201607152254
KNIME Image Processing - Tess4J Integration 1.3.0.v201607051537
Best,
Friedrich