having problem using vision_opencv to get image from kinect?

edit

I have kinect which is working well and I can get image by running openni.launch and rviz. I want to subscribe this kinect image in to a node and change it to opencv image format from ros image format for image processing. for doing the same I am following the following page. http://dasl.mem.drexel.edu/wiki/index.php/How_to_make_ROS_and_Opencv_work_together

however using rosmake it is showing following error .....

/opt/ros/groovy/share/vision_opencv/roscv/src/simplecanny.cpp:12:32: fatal error: cv_bridge/CvBridge.h: No such file or directory
  compilation terminated.
  make[3]: *** [CMakeFiles/roscv.dir/src/simplecanny.cpp.o] Error 1
  make[3]: Leaving directory `/opt/ros/groovy/share/vision_opencv/roscv/build'
  make[2]: *** [CMakeFiles/roscv.dir/all] Error 2
  make[2]: Leaving directory `/opt/ros/groovy/share/vision_opencv/roscv/build'
  make[1]: *** [all] Error 2
  make[1]: Leaving directory `/opt/ros/groovy/share/vision_opencv/roscv/build'
-------------------------------------------------------------------------------}
[ rosmake ] Output from build of package roscv written to:
[ rosmake ]    /home/admin-pc/.ros/rosmake/rosmake_output-20131207-114326/roscv/build_output.log
[rosmake-4] Finished <<< roscv [FAIL] [ 2.82 seconds ]                          
[ rosmake ] Halting due to failure in package roscv. 
[ rosmake ] Waiting for other threads to complete.
[ rosmake ] Results:                                                            
[ rosmake ] Built 39 packages with 1 failures.                                  
[ rosmake ] Summary output to directory                                         
[ rosmake ] /home/admin-pc/.ros/rosmake/rosmake_output-20131207-114326