Problems using native libraries for compression/decompression in webapp.

[davidm...@gmail.com]

I have a webapp that is attempting to use dcm4che 5.23.2 to do image compression and decompression.  I am having problems configuring this to work in this environment. 

1. Ubuntu 20.04.2 LTS

2. Apache Tomcat/9.0.31 (Ubuntu)

3. Tomcat9 launched with -D-Djava.library.path=/my/dir/lib/linux-x86_64

4. The two shared library files for linux and distributed with dcm4che 5.23.2, libclib_jiio.so  libopencv_java.so, in this directory and world readable.

5. My app is built with and deployed with these dependencies

dcm4che-core-5.23.2.jar

dcm4che-dict-5.22.6.jar

dcm4che-image-5.23.2.jar

dcm4che-imageio-5.23.2.jar

dcm4che-imageio-opencv-5.23.2.jar

dcm4che-json-5.23.2.jar

The 'opencv_java' library is not found when the StreamSegment class tries to initialize to read a JPG-lossless compressed image, 1.2.840.10008.1.2.4.70. This error is opaque and I don't get hints as to what is missing.

Is anyone doing this, and how?

Thanks,

Dave