matt27110's profile - activity

Hello everyone,

Currently, I'm working on the AR drone 2.0 with ROS indigo. I want to track an object.

At the moment, I have 3 nodes: the first one gets a camera capture from the drone's camera and send it to the 2nd node (it works).

The second node takes the capture, binarizes it and send the binarized image to my 3rd node. (it works)

From this binarized image, my 3rd node finds the barycenter of my target and now, I want to draw a rectangle onto the image coming from the camera in the first node but I don't know how to proceed since my 3rd node.

Do you have any idea ?

Docker and ROS Hello everyone, As ROS works through TCP/IP communications, can we connect ROS nodes that are running on

Hello everyone !

I know there's already a post about this subject : http://answers.ros.org/question/22924... but there's no answer.

OpenCV3 is included with ROS Kinetic. Is there a way to install opencv extra-modules while opencv is already installed ?

Thank you for your help !

Eureka !!

I removed the 2 lines in the manifest and the pkg_check_modules in the CMakeLIsts. Then I replaced ncurses++ by Curses and it works !

find_package(Curses REQUIRED)
add_executable(test_ncurses src/test_ncurses.cpp )
target_link_libraries(test_ncurses ${catkin_LIBRARIES}  ${Curses_LIBRARIES})

Not working :/

CMake Error at /usr/share/cmake-3.5/Modules/FindPkgConfig.cmake:367 (message):
  A required package was not found

Hello everyone !

I know there are already posts about this subject but after many tries I don't know how to resolve this problem.

This is my code "test_ncurses.cpp":

// test_ncurses.cpp
#include <ncurses.h>
int main(int argc, char **argv) 
{   
   initscr();    
   printw("Hello world");  
   refresh();    
   getch();    
   endwin();   
   return 0; 
}

In the manifest I added these lines :

<build_depend>ncurses++</build_depend>
<run_depend>ncurses++</run_depend>

And in my CMakeLists.txt :

find_package( PkgConfig REQUIRED )
pkg_check_modules ( ncurses++ REQUIRED ncurses++ )
add_executable(test_ncurses src/test_ncurses.cpp )
target_link_libraries(test_ncurses ${catkin_LIBRARIES}  ${ncurses++_LIBRARIES})

And when I want to catkin_make my project I get errors :

undefined reference to "initscr"
undefined reference to "printw"
undefined reference to "refresh"
undefined reference to "stdscr"
undefined reference to "wgetch"
undefined reference to "endwin"

Do you have any ideas ?

Thank you in advance !

I've just tested it and it works !! Thank you !

Not yet tested with geometry_msgs

Hello everyone !

I would like to send a cv::Point2d as a ROS message. Is it possible ? I'm not sure whether it is or not.

Otherwise I can send a custom ROS message using 2 variables (int point.x and int point.y).

Thank you for your help !

Hello everyone !

I have a question about the AR drone 2. Is it possible to reset the cmd_vel every X ms from the package ardrone_autonomy ?

I know it's possible on the Bebop, just modifying timeout_cmd_vel = MY_VALUE in the yaml file (bebop_autonomy/bebop_driver/config/default.yaml).

Thanks for your help !!

Hello everyone !

Do you know how to install the package ardrone_autonomy on ROS kinetic (if it's possible) ?

Thank you for your help !

Ahhhh I thought they were different because in the link the ROS version is indigo and mine is kinetic. Thx !!

Finally I downloaded the package with apt-get and this package is located at : /opt/ros/kinetic/share/ardrone_autonomy. I copied/pasted it in catkin_ws/src and I would like to run catkin_make but there's no CMakeList

I confused myself xD I was trying to use an indigo package called ardrone_autonomy from this link : https://github.com/AutonomyLab/ardron... , I was wrong

but in this package there's no CMakeList.txt

/opt/ros/kinetic/share/ardrone_autonomy

The apt-get command works well ans i'm using Intel processor