added jean's functions to compute distance from the centroid of an object to camera origin
test
Update README.md
Fonctionnal distance calculation
update
Merge branch 'master' of https://github.com/jpmerc/perception3d

Conflicts:
	src/objects_extraction.cpp
update the corner detection
Update CMakeLists.txt
parameter to select topic to subscribe to
pr2 gazebo simulation with objects on a table
rgb corner draw
new image traitement
modified launch files
objection extraction modification
2 hrz on the kinect
Merge branch 'master' of github.com:jpmerc/perception3d
image transport add
tracking
merge
beginning to restructure the project in classes