search

HebiRobotics / HebiCam

MATLAB utility for streaming video acquisition (h264, mjpeg, etc.)
Other
12 stars 5 forks source link

HebiCam Java exception #1

Closed bsaund closed 7 years ago

bsaund commented 7 years ago

After installing the latest release I get a Java exception when I try to create a HebiCam object. Ubuntu 14.04

cam = HebiCam('http://10.10.10.107/mjpeg'); Warning: The following error was caught while executing 'HebiCam' class destructor: Undefined function 'stop' for input arguments of type 'double'. In cam_rotate (line 25) Error using HebiCam (line 72) Java exception occurred: java.lang.UnsatisfiedLinkError: no jniopencv_core in java.library.path at java.lang.ClassLoader.loadLibrary(Unknown Source) at java.lang.Runtime.loadLibrary0(Unknown Source) at java.lang.System.loadLibrary(Unknown Source) at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:536) at org.bytedeco.javacpp.Loader.load(Loader.java:411) at org.bytedeco.javacpp.Loader.load(Loader.java:354) at org.bytedeco.javacpp.opencv_core.(opencv_core.java:10) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at org.bytedeco.javacpp.Loader.load(Loader.java:386) at org.bytedeco.javacpp.Loader.load(Loader.java:354) at org.bytedeco.javacpp.opencv_core$MatVector.(opencv_core.java:225) at us.hebi.matlab.streaming.MatlabImageConverter$RgbConverter.(MatlabImageConverter.java:93) at us.hebi.matlab.streaming.MatlabImageConverter.createRgbConverter(MatlabImageConverter.java:43) at us.hebi.matlab.streaming.BackingHebiCam.(BackingHebiCam.java:282) at us.hebi.matlab.streaming.BackingHebiCam.openRemoteUri(BackingHebiCam.java:99) at us.hebi.matlab.streaming.BackingHebiCam.open(BackingHebiCam.java:66) Caused by: java.lang.UnsatisfiedLinkError: /tmp/javacpp26829475693961/libjniopencv_core.so: /usr/local/MATLAB/R2016a/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /tmp/javacpp26829475693961/libopencv_core.so.2.4) at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary1(Unknown Source) at java.lang.ClassLoader.loadLibrary0(Unknown Source) at java.lang.ClassLoader.loadLibrary(Unknown Source) at java.lang.Runtime.load0(Unknown Source) at java.lang.System.load(Unknown Source) at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:525) ... 13 more

Error in cam_rotate (line 25) cam = HebiCam('http://10.10.10.107/mjpeg');

version -java

ans =

Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

ennerf commented 7 years ago

We're using JavaCV, which is a Java wrapper around OpenCV. I've run into issues before where the supplied Linux binaries were compiled using the absolute latest glibc, which resulted in compatibility issues with older versions of Linux.

I'm already using a pretty old version of JavaCV to attempt to mitigate this issue, but I'm not sure what versions of Ubuntu are compatible. Could you try running this on a newer Ubuntu version?

ennerf commented 7 years ago

I've updated the JavaCV binaries in release 1.1. I've tested it on Ubuntu 14.04 and 16.04 and this issue seems to be fixed.