spkulgod's profile - activity

I am unable to detect standard tags using the ARDrone 2.0's camera.I am using Ardrone_Autonomy and ROS to control the drone. Should i activate something in order to start the detection or should it start by itself? And how do I start it manually?

I am facing a few issues with image_view after installing vision_opencv. I am trying to view the images produced by an ardrone in the directory ardrone/front/image_raw using rosrun image_view image_view:=ardrone/front/image_raw. It seemed to be working fine till i installed vision_opencv. Now it is giving the following error when i run that

[ INFO] [1464594522.943802369]: Using transport "raw"

/opt/ros/indigo/lib/image_view/image_view: symbol lookup error: /opt/ros/indigo/lib/image_view/image_view: undefined symbol: _ZN9cv_bridge18cvtColorForDisplayERKN5boost10shared_ptrIKNS_7CvImageEEERKSsbdd

Thank you for the help, it seems to be working.

thank you, i will try that out and get back.

yeah but the vision_opencv page asks me to edit the CMakeLists.txt the link for the isvision_opencv

This is the link for the tutorial http://wiki.ros.org/cv_bridge/Tutoria...

This is probably because i have added opencv2 as a dependency while creating the package as told in the tutorial. Should i change it to opencv?

i tried doing that and i get a different error as shown below

CMake Error at opencv_test/CMakeLists.txt:121 (target_link_libraries):
  Cannot specify link libraries for target "opencv_test" which is not built
  by this project.


-- Configuring incomplete, errors occurred!

I tried adding that instead of find_package(OpenCV) but it did not work

I was following the Converting between ROS images and OpenCV images (Python) tutorial and i came across the following problem while running catkin_make. I am new to ros and i am still finding my way around it. I have installed opencv and have tried out the solutions suggested in other threads, but none of them seem to work. This is the error i get while executing catkin_make.

  CMake Error at /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
  Could not find a package configuration file provided by "opencv2" with any
  of the following names:

    opencv2Config.cmake
    opencv2-config.cmake

  Add the installation prefix of "opencv2" to CMAKE_PREFIX_PATH or set
  "opencv2_DIR" to a directory containing one of the above files.  If
  "opencv2" provides a separate development package or SDK, be sure it has
  been installed.

my CMakeLists file has the following content

cmake_minimum_required(VERSION 2.8.3)
project(opencv_test)
find_package(catkin REQUIRED COMPONENTS
  cv_bridge
  opencv2
  rospy
  sensor_msgs
  std_msgs
)
find_package(OpenCV)
include_directories(
  ${catkin_INCLUDE_DIRS}
)
include_directories(${OpenCV_INCLUDE_DIRS})
target_link_libraries(opencv_test ${OpenCV_LIBRARIES})