SamTew's profile - activity

I am running L4T 21.4 in TK1. I installed ROS by running the script from https://github.com/jetsonhacks/instal... . I am trying to run opencv4tegra in ROS. However, when I catkin_make my workspace, it show " No rule to make target `/usr/lib/arm-linux-gnueabihf/libopencv_videostab.so.2.4.8'. I have tried sudo apt-get install libopencv-videostab2.4 but it remove a lot of packages including opencv4tegra and ROS. I also tried the solution from https://devtalk.nvidia.com/default/to... but still no luck.

Hi, LexX. Last time i stop this project for awhile and now i am going to continue it again. Actually i am totally new and yet do not have good basic. If possible, can you tell me the procedure for mapping and navigation? Else tell me some website or tutorial that i can learn all the basic. Thanks.

i have tried but it still the same. Thanks anyway.

 sam@sam-X450LCP:~$ rosrun image_view image_view image:=/camera/depth_registered/image_raw
[ INFO] [1436104815.972634092]: Using transport "raw"

This application failed to start because it could not find or load the Qt platform plugin "xcb".

Reinstalling the application may fix this problem.
Aborted (core dumped)

I use freenect_launch to activate kinect. Nothing is strange except this warning.

[ WARN] [1436104496.653971362]: Could not find any compatible depth output mode for 1. Falling back to default depth output mode 1.

Can anyone help me?

I am using kinect to publish laserscan data for mapping. I used depthimage_to_laserscan package to convert it. When running mapping, rviz showed no tf was found for the laserscan. Is depthimage_to_laserscan contains tf when it publishs /scan? If no, then how to fuse tf into it?

I am going to do mapping on a custom robot. After that, give a coordinate on the map to robot and let the robot move there without laserscan data. I am new in ros. In this process, I still unclear about many steps.

1. When making the urdf of my robot, is it necessary to include a real kinect? Or can simply draw a box at the correct position?
2. I am using gmapping and i know it is required odometry tf. If i am using encoder and imu, how to convert these data to odometry? What kinds of data needed? For imu, the data publish as nav_msgs/Odometry or sensor_msgs/Imu?
3. After mapping, can i move robot on the map without kinect only depend on encoder and imu? The robot will moving on a static map which means no dynamic obstacle will appear.
4. After mapping, what kind of coordinate to be given to robot to move the robot? For example, i have a ball at 2d coordinate (x,y) and height,z. How can i pass the coordinate to robot so that it will move to the desired place?

Thank in advance for your guidance.

Is anyone tried this tutorial before? http://gazebosim.org/tutorials/?tut=r...

I follow the steps: cd ~/catkin_ws/src/ git clone https://github.com/ros-simulation/gaz... cd .. catkin_make build successful.

However, when i try to run roslaunch rrbot_description rrbot_rviz.launch, it gives me this error. [rviz-4] process has died [pid 8639, exit code -11, cmd /opt/ros/indigo/lib/rviz/rviz -d /home/sam/task/src/gazebo_ros_demos/rrbot_description/launch/rrbot.rviz __name:=rviz __log:=/home/sam/.ros/log/1164600a-1ffb-11e5-ac93-485ab67bb3cb/rviz-4.log]. log file: /home/sam/.ros/log/1164600a-1ffb-11e5-ac93-485ab67bb3cb/rviz-4*.log

Can anyone help me?