0.2.1

Added

• filters: Implement depth image compression filter (opt-in feature)

  • Add DepthCompressionFilter class for ROS1 Noetic and ROS2 (Humble/Jazzy/Rolling)
  • Support sensor_msgs/Image to sensor_msgs/CompressedImage transformation
  • Integrate DepthLiteZ compression library with 5-10x compression ratio
  • Support configurable compression levels: fast, medium, max
  • Pass-through for non-depth images or compression failures
  • Note: Depth compression is disabled by default for open-source builds
    • Requires private DepthLiteZ submodule access
    • Enable with: cmake -DAXON_ENABLE_DEPTH_COMPRESSION=ON
    • See documentation for setup instructions

• middleware: Add depthlitez submodule reference for specialized depth compression

  • Shared compression library used by both ROS1 and ROS2 plugins
  • Submodule is listed in .gitmodules but excluded from public builds
  • Users with access can initialize: git submodule update --init --recursive middlewares/filters/depthlitez