Now mimic joints are published in WorldToROSTF
Fixed depth (in 32FC1 format according to REP118) and bw image publishing.
Optimized bw and rgb8 image publishing.
Added object functionality to WorldToROSTF
Merge pull request #30 from tut-yury/depthsensor_rosinterface_fix

Image's ROS publisher fixes and optimizations.
Merge branch 'hydro-devel' of https://github.com/uji-ros-pkg/underwater_simulation into hydro-devel