PeteBlackerThe3rd's profile - overview

● Commentator   × 1

• How to use OpenCV to process image

● Self-Learner   × 4

• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• creating a custom message type including an image
• creating a custom message type including an image

● Civic Duty   × 2

• Can I fix my odometry given my current encoder precision?
• Can I fix my odometry given my current encoder precision?

● Teacher   × 2

• what is the first step of doing image processing with ROS?
• what is the first step of doing image processing with ROS?

● Notable Question   × 24

• Rviz trying to display shape_msgs Mesh
• Rviz trying to display shape_msgs Mesh
• Converting 3D point to 2D pixel position using callibration data
• Converting 3D point to 2D pixel position using callibration data
• Problems building a node which depends on another node.
• Problems building a node which depends on another node.
• Including files from another catkin workspace
• Including files from another catkin workspace
• help installing pcl on ROS Indigo
• help installing pcl on ROS Indigo
• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• creating a custom message type including an image
• creating a custom message type including an image
• Using the razor_imu_9dof package with the sparkfun IMU (14001)
• Using the razor_imu_9dof package with the sparkfun IMU (14001)
• opencv missing shared objects causes run time error
• opencv missing shared objects causes run time error
• Using Herkulex Smart Servos with ROS and MoveIt
• Using Herkulex Smart Servos with ROS and MoveIt
• Is anyone using the Directed Perception PTU_47 Pan Tilt
• Is anyone using the Directed Perception PTU_47 Pan Tilt
• Cannot install ros-noetic-moveit-visual-tools on Ubuntu 20.04, WSL2
• Cannot install ros-noetic-moveit-visual-tools on Ubuntu 20.04, WSL2

● Popular Question   × 24

• Rviz trying to display shape_msgs Mesh
• Rviz trying to display shape_msgs Mesh
• Converting 3D point to 2D pixel position using callibration data
• Converting 3D point to 2D pixel position using callibration data
• Problems building a node which depends on another node.
• Problems building a node which depends on another node.
• Including files from another catkin workspace
• Including files from another catkin workspace
• creating a custom message type including an image
• creating a custom message type including an image
• help installing pcl on ROS Indigo
• help installing pcl on ROS Indigo
• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• Using the razor_imu_9dof package with the sparkfun IMU (14001)
• Using the razor_imu_9dof package with the sparkfun IMU (14001)
• opencv missing shared objects causes run time error
• opencv missing shared objects causes run time error
• Is anyone using the Directed Perception PTU_47 Pan Tilt
• Is anyone using the Directed Perception PTU_47 Pan Tilt
• Using Herkulex Smart Servos with ROS and MoveIt
• Using Herkulex Smart Servos with ROS and MoveIt
• Cannot install ros-noetic-moveit-visual-tools on Ubuntu 20.04, WSL2
• Cannot install ros-noetic-moveit-visual-tools on Ubuntu 20.04, WSL2

● Enthusiast   × 1

● Student   × 2

• Rviz trying to display shape_msgs Mesh
• Rviz trying to display shape_msgs Mesh

● Guru   × 7

• run ros terminal commands within a python script
• Please explain how the Subscriber works
• roslaunch command line args
• custom msg throwing this error
• How can we actually use Float32MultiArray to publish 2D array using Python?
• Question about AMCL covariance calculation
• fatal error: .h No such file or directory

● Citizen Patrol   × 2

• Buy viagra online
• Buy viagra online

● Necromancer   × 5

• Driver for HERO3 Camera?
• rviz with pcl::PointCloud<T>
• How to wrap a hardware-driver in ROS
• razor_imu_9dof can not install with SparkFun 9DoF Razor IMU M0
• How to make depth stream video

● Editor   × 2

• I need help writing a controller node for a drone
• I need help writing a controller node for a drone

● Good Answer   × 92

• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• fatal error: .h No such file or directory
• fatal error: .h No such file or directory
• Package is not found after running roscore
• Package is not found after running roscore
• ROS programming with C++
• ROS programming with C++
• Question about AMCL covariance calculation
• Question about AMCL covariance calculation
• Explanation on sensor_msgs/LaserScan and time
• Explanation on sensor_msgs/LaserScan and time
• run ros terminal commands within a python script
• run ros terminal commands within a python script
• How can I visualize magnetometer data in Rviz?
• How can I visualize magnetometer data in Rviz?
• roslaunch command line args
• roslaunch command line args
• X Y and Z coordinates in LaserScan
• X Y and Z coordinates in LaserScan
• How to fuse encoder ticks + IMU for odometry?
• How to fuse encoder ticks + IMU for odometry?
• camera calibration algorithm
• camera calibration algorithm
• How to filter PointCloud2 data based on distances?
• How to filter PointCloud2 data based on distances?
• Please explain how the Subscriber works
• Please explain how the Subscriber works
• custom msg throwing this error
• custom msg throwing this error
• How can we actually use Float32MultiArray to publish 2D array using Python?
• How can we actually use Float32MultiArray to publish 2D array using Python?
• Create a subscriber in Move Group Python Interface to keep getting desired poses to plan and execute
• Create a subscriber in Move Group Python Interface to keep getting desired poses to plan and execute
• Understand PointCloud2 msg (data array)
• Understand PointCloud2 msg (data array)
• How to get number of frames?
• How to get number of frames?
• When should a ROS package be published?
• When should a ROS package be published?
• Ptr suffix in ROS messages
• Ptr suffix in ROS messages
• Machine vision cameras with ROS drivers?
• Machine vision cameras with ROS drivers?
• How to control a real robot and simulate it in Gazebo at the same time ?
• How to control a real robot and simulate it in Gazebo at the same time ?
• OpenCV camera rvec tvec to ROS world pose
• OpenCV camera rvec tvec to ROS world pose
• what is a costmap
• what is a costmap
• LaserScan Message vs MultiEchoLaserScan Message
• LaserScan Message vs MultiEchoLaserScan Message
• The problem about the double messages read from a rosbag file
• The problem about the double messages read from a rosbag file
• creating a custom message type including an image
• creating a custom message type including an image
• Navigation outdoors, how?
• Navigation outdoors, how?
• How to send Array Message from Arduino to ROS Topic ?
• How to send Array Message from Arduino to ROS Topic ?
• subscriber callback not running (c++)
• subscriber callback not running (c++)
• I need help writing a controller node for a drone
• I need help writing a controller node for a drone
• How to create colored objects in moveit or Rviz in robot's frame
• How to create colored objects in moveit or Rviz in robot's frame
• what is the first step of doing image processing with ROS?
• what is the first step of doing image processing with ROS?
• What exactly does "frame_locked" mean?
• What exactly does "frame_locked" mean?
• How can I modify the Laser angle scan?
• How can I modify the Laser angle scan?
• How to get param value in to arg in roslaunch?
• How to get param value in to arg in roslaunch?
• How to create organized pointcloud from unorganized pointcloud?
• How to create organized pointcloud from unorganized pointcloud?
• MoveIt stop command usage
• MoveIt stop command usage
• ros control effort controllers explained?
• ros control effort controllers explained?
• decompress jpeg depth data
• decompress jpeg depth data
• What does intensity mean intensity exactly ?
• What does intensity mean intensity exactly ?
• How can I run a node from Code?
• How can I run a node from Code?
• Failed to find match for field 'intensity' with Ouster LIDAR
• Failed to find match for field 'intensity' with Ouster LIDAR
• Dynamically resolve message type and subscribe to topic at runtime in roscpp ?
• Dynamically resolve message type and subscribe to topic at runtime in roscpp ?
• tf2 listener transform has child_frame_id as the source and frame_id as the target
• tf2 listener transform has child_frame_id as the source and frame_id as the target

● Nice Answer   × 218

• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• Driver for HERO3 Camera?
• Driver for HERO3 Camera?
• Machine vision cameras with ROS drivers?
• Machine vision cameras with ROS drivers?
• rviz with pcl::PointCloud<T>
• rviz with pcl::PointCloud<T>
• Normal of pointcloud2
• Normal of pointcloud2
• Differential Drive calculation
• Differential Drive calculation
• how to aggregate several PointCloud2 messages into one?
• how to aggregate several PointCloud2 messages into one?
• fatal error: .h No such file or directory
• fatal error: .h No such file or directory
• Updating the values of a while loop coming from another node
• Updating the values of a while loop coming from another node
• How do I use tuple datatype in my custom message?
• How do I use tuple datatype in my custom message?
• Package is not found after running roscore
• Package is not found after running roscore
• Can I build instant maps from kinect
• Can I build instant maps from kinect
• octomap_server, velodyne_driver, and rviz
• octomap_server, velodyne_driver, and rviz
• custom msg throwing this error
• custom msg throwing this error
• CMake: How to compile each node with a specific flag
• CMake: How to compile each node with a specific flag
• ROS programming with C++
• ROS programming with C++
• Rviz shows wrong world frame
• Rviz shows wrong world frame
• Question about AMCL covariance calculation
• Question about AMCL covariance calculation
• What exactly does "frame_locked" mean?
• What exactly does "frame_locked" mean?
• Explanation on sensor_msgs/LaserScan and time
• Explanation on sensor_msgs/LaserScan and time
• ROSCPP - reading HZ from code
• ROSCPP - reading HZ from code
• Not able to use frame_id from rosserial arduino in rviz
• Not able to use frame_id from rosserial arduino in rviz
• subscriber callback not running (c++)
• subscriber callback not running (c++)
• run ros terminal commands within a python script
• run ros terminal commands within a python script
• Subscribing to a topic whenever it publishes without affecting the execution of program
• Subscribing to a topic whenever it publishes without affecting the execution of program
• Finding pose in base coordinate when given input point on camera image
• Finding pose in base coordinate when given input point on camera image
• How to use transformListener to lookup very early Transform?
• How to use transformListener to lookup very early Transform?
• Understand PointCloud2 msg (data array)
• Understand PointCloud2 msg (data array)
• How can I visualize magnetometer data in Rviz?
• How can I visualize magnetometer data in Rviz?
• Converting intel RealSense D415 bag file to PCD
• Converting intel RealSense D415 bag file to PCD
• roslaunch command line args
• roslaunch command line args
• I am planning to publish sensor data over wifi module(ESP8266-01) through arduino. In my program it created a access point but it is not sending any data
• I am planning to publish sensor data over wifi module(ESP8266-01) through arduino. In my program it created a access point but it is not sending any data
• X Y and Z coordinates in LaserScan
• X Y and Z coordinates in LaserScan
• Dynamically resolve message type and subscribe to topic at runtime in roscpp ?
• Dynamically resolve message type and subscribe to topic at runtime in roscpp ?
• Where is magnetometer measurements in the IMU messages
• Where is magnetometer measurements in the IMU messages
• rospack cannot find package every-time terminal restarted
• rospack cannot find package every-time terminal restarted
• what are the different types of ros_control ?
• what are the different types of ros_control ?
• Catkin workspaces, packages “built from scratch”, builds vs source-files, interoperability in builds.
• Catkin workspaces, packages “built from scratch”, builds vs source-files, interoperability in builds.
• Save specific data from a rosbag into an C++ array variable.
• Save specific data from a rosbag into an C++ array variable.
• how to define urdf content when robot has rack-gear frame?
• how to define urdf content when robot has rack-gear frame?
• Sending arrays (LaserScan msg) in rosserial
• Sending arrays (LaserScan msg) in rosserial
• How to get param value in to arg in roslaunch?
• How to get param value in to arg in roslaunch?
• which I should use python or c++?
• which I should use python or c++?
• How to fuse encoder ticks + IMU for odometry?
• How to fuse encoder ticks + IMU for odometry?
• How to filter PointCloud2 data based on distances?
• How to filter PointCloud2 data based on distances?
• Checking for GPS waypoint being passed?
• Checking for GPS waypoint being passed?
• ROS callbacks' scope and objects' lifecycles
• ROS callbacks' scope and objects' lifecycles
• camera calibration algorithm
• camera calibration algorithm
• Create a subscriber in Move Group Python Interface to keep getting desired poses to plan and execute
• Create a subscriber in Move Group Python Interface to keep getting desired poses to plan and execute
• How to send Array Message from Arduino to ROS Topic ?
• How to send Array Message from Arduino to ROS Topic ?
• How to subcribe 2 image topics with 1 node in same time ?
• How to subcribe 2 image topics with 1 node in same time ?
• How to decide the thread count for AsyncSpinner?
• How to decide the thread count for AsyncSpinner?
• How do I stop RosSerial from causing the boot of my IMU to fail?
• How do I stop RosSerial from causing the boot of my IMU to fail?
• Visual Odometry with Realsense Camera
• Visual Odometry with Realsense Camera
• Rotation Angle in Pose Orientation
• Rotation Angle in Pose Orientation
• Texturize robot consisting of STL-files
• Texturize robot consisting of STL-files
• Is using lat/long coordinate space advisable?
• Is using lat/long coordinate space advisable?
• decompress jpeg depth data
• decompress jpeg depth data
• ros msg serialize and deserialize for type double
• ros msg serialize and deserialize for type double
• depth data retrieved by image_transport has confusing format
• depth data retrieved by image_transport has confusing format
• How to Edit ROS Tutorials ?
• How to Edit ROS Tutorials ?
• Unable to subscribe to string topic using rosserial arduino nano
• Unable to subscribe to string topic using rosserial arduino nano
• Preventing excessive callbacks in RosPy
• Preventing excessive callbacks in RosPy
• Please explain how the Subscriber works
• Please explain how the Subscriber works
• OpenCV camera rvec tvec to ROS world pose
• OpenCV camera rvec tvec to ROS world pose
• kill nodes (started with .launch file) properly in Qt, how?
• kill nodes (started with .launch file) properly in Qt, how?
• How can we actually use Float32MultiArray to publish 2D array using Python?
• How can we actually use Float32MultiArray to publish 2D array using Python?
• Camera calibration and ar_track_alvar pose
• Camera calibration and ar_track_alvar pose
• How to read a point cloud (.pcd) file and send it to a rosbag
• How to read a point cloud (.pcd) file and send it to a rosbag
• How to talk to two ROS devices over serial?
• How to talk to two ROS devices over serial?
• can't locate node [my_imu] in package [imu_localisation]
• can't locate node [my_imu] in package [imu_localisation]
• I need help writing a controller node for a drone
• I need help writing a controller node for a drone
• Inertial Measurement Units
• Inertial Measurement Units
• The problem about the double messages read from a rosbag file
• The problem about the double messages read from a rosbag file
• MoveIt stop command usage
• MoveIt stop command usage
• How to get number of frames?
• How to get number of frames?
• How to control a real robot and simulate it in Gazebo at the same time ?
• How to control a real robot and simulate it in Gazebo at the same time ?
• marker position and orientation
• marker position and orientation
• Running executables without using rosrun or roslaunch ??
• Running executables without using rosrun or roslaunch ??
• When should a ROS package be published?
• When should a ROS package be published?
• Ptr suffix in ROS messages
• Ptr suffix in ROS messages
• LaserScan Message vs MultiEchoLaserScan Message
• LaserScan Message vs MultiEchoLaserScan Message
• creating a custom message type including an image
• creating a custom message type including an image
• Navigation outdoors, how?
• Navigation outdoors, how?
• what is a costmap
• what is a costmap
• How can I run a node from Code?
• How can I run a node from Code?
• What are the JointStateHandle units?
• What are the JointStateHandle units?
• tf2 listener transform has child_frame_id as the source and frame_id as the target
• tf2 listener transform has child_frame_id as the source and frame_id as the target
• what is the first step of doing image processing with ROS?
• what is the first step of doing image processing with ROS?
• Simulating the robot using moveit
• Simulating the robot using moveit
• ros control effort controllers explained?
• ros control effort controllers explained?
• How can I modify the Laser angle scan?
• How can I modify the Laser angle scan?
• sensor_msgs pointcloud2 color value ?
• sensor_msgs pointcloud2 color value ?
• ros nodes vs ros timers?
• ros nodes vs ros timers?
• Subscribing to nav_msgs::Path message
• Subscribing to nav_msgs::Path message
• ar_track_alvar not precise and not producing repeatable results
• ar_track_alvar not precise and not producing repeatable results
• How to create colored objects in moveit or Rviz in robot's frame
• How to create colored objects in moveit or Rviz in robot's frame
• How to create organized pointcloud from unorganized pointcloud?
• How to create organized pointcloud from unorganized pointcloud?
• How to start creating a package to read a signal and publish it in a ROS network
• How to start creating a package to read a signal and publish it in a ROS network
• Transforming in combined tree
• Transforming in combined tree
• What does intensity mean intensity exactly ?
• What does intensity mean intensity exactly ?
• camera calibration file head_camera.yaml not found
• camera calibration file head_camera.yaml not found
• Trouble trying to find ActionType for "execute_trajectory" Action Server
• Trouble trying to find ActionType for "execute_trajectory" Action Server
• Failed to find match for field 'intensity' with Ouster LIDAR
• Failed to find match for field 'intensity' with Ouster LIDAR
• How to solve problem with PATH_TOLERANCE_VIOLATED in moveit?
• How to solve problem with PATH_TOLERANCE_VIOLATED in moveit?
• ROS2 version
• ROS2 version
• how to use tf2 to transform PoseStamped messages from one frame to another?
• how to use tf2 to transform PoseStamped messages from one frame to another?
• SLAM when some of lidar measurements are blocked by robot structure?
• SLAM when some of lidar measurements are blocked by robot structure?
• Are all the 16 bits of Realsense D415 depth message valid?
• Are all the 16 bits of Realsense D415 depth message valid?

● Enlightened   × 2

• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL

● Nice Question   × 8

• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• Rviz trying to display shape_msgs Mesh
• Rviz trying to display shape_msgs Mesh
• opencv missing shared objects causes run time error
• opencv missing shared objects causes run time error
• creating a custom message type including an image
• creating a custom message type including an image

● Rapid Responder   × 74

• In-Place Modification of PointCloud2 message?
• How to feed Point Cloud from a file into a grid_map
• how to use tf2 to transform PoseStamped messages from one frame to another?
• How to calculate quaterion for 2d navigation between 2 points
• How to read a point cloud (.pcd) file and send it to a rosbag
• How to solve problem with PATH_TOLERANCE_VIOLATED in moveit?
• RViz marker coordinate space
• Send goal code
• ROS image subscriber wont stop subscribing
• How can we actually use Float32MultiArray to publish 2D array using Python?
• Static Publisher Z argument not working
• How to start creating a package to read a signal and publish it in a ROS network
• Conversion from Point Cloud (PCL) to PointCloud2 (ROS) not showing result on RViz
• Set of geometry_msgs::Point
• How to create organized pointcloud from unorganized pointcloud?
• How to dynamically reconfigure without running the robot?
• Pointcloud value at a given index
• What is a good way of storing robot paths and access them?
• Camera calibration and ar_track_alvar pose
• How to create colored objects in moveit or Rviz in robot's frame
• Is the tf 'tree' persistent in any way or derived from the flow of tf topics?
• Help with tf2 tutorial "Writing a tf2 listener"
• When an intended exit occurs, rosbag status problem.
• Equivalent turtlesim/Pose and geometry_msgs/Pose
• Possible to record a specific time window (from T1 to T2) of a rosbag?
• Convert PointCloud2ConstPtr to PointCloud2
• Frame Rotations and RViz
• What method can be used to interpolate the orientation of a robotic arm?
• Option --square for camera calibration with circle/acircle pattern
• publishing a cv2 image with cv_bridge
• ROs physical movements
• Find end effector pose from joint state
• ros nodes vs ros timers?
• What are the JointStateHandle units?
• LSD-SLAM double free or corruption
• Create world frame
• Point cloud not visible in Rviz
• How to talk to two ROS devices over serial?
• can't locate node [my_imu] in package [imu_localisation]
• Exchange data(messages) between robots in ROS1
• tf2 listener transform has child_frame_id as the source and frame_id as the target
• The problem about the double messages read from a rosbag file
• laser_frame is pointing upwards
• can't use sudo rosbag
• Trajectory Length Problem
• I m trying to make my Nodehandle global,below is my code.But I m unable to listen to subscribed topic.
• Print a msg from a Turtlebot3 subscriber
• Problems with publishing a cmd_vel message
• ROS based GUI to control robots
• ros control effort controllers explained?
• Get list of all topics within c++ node
• what the scale of time stamp in LaserScan topic??
• Cannot specify link libraries for target "node_name" which is not built by this project.
• CV_Bridge converts nan to black values when using toImageMsg()
• Package/ program to run in ROS for raspberry pi of robot
• canTransform() methode always returns False
• How can I convert PWM values to velocity?
• add an array with XmlRpc::XmlRpcValue
• move_group interface using a callback function
• How to get number of frames?
• How to get number of frames?
• Subscribing to a text file
• pointcloud_to_laserscan with camera pointed downward
• How to control a real robot and simulate it in Gazebo at the same time ?
• How to do wireless communication between robots and desktops?
• bag_to_pcd saves to same file
• rviz_plugin_covariance Array of messages?
• When should a ROS package be published?
• Ptr suffix in ROS messages
• Using rosserial to read data from a device
• realtime image subscriber
• URDF, Attaching two joints to one link for a gripper
• Omnidirectional Four_wheel_steering_controllers/base-controllers
• odometry calculation for car like robot using ackerman steering

● Famous Question   × 24

• Rviz trying to display shape_msgs Mesh
• Rviz trying to display shape_msgs Mesh
• Converting 3D point to 2D pixel position using callibration data
• Converting 3D point to 2D pixel position using callibration data
• Including files from another catkin workspace
• Including files from another catkin workspace
• help installing pcl on ROS Indigo
• help installing pcl on ROS Indigo
• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• Problems building a node which depends on another node.
• Problems building a node which depends on another node.
• creating a custom message type including an image
• creating a custom message type including an image
• Using the razor_imu_9dof package with the sparkfun IMU (14001)
• Using the razor_imu_9dof package with the sparkfun IMU (14001)
• opencv missing shared objects causes run time error
• opencv missing shared objects causes run time error
• Using Herkulex Smart Servos with ROS and MoveIt
• Using Herkulex Smart Servos with ROS and MoveIt
• Is anyone using the Directed Perception PTU_47 Pan Tilt
• Is anyone using the Directed Perception PTU_47 Pan Tilt
• Cannot install ros-noetic-moveit-visual-tools on Ubuntu 20.04, WSL2
• Cannot install ros-noetic-moveit-visual-tools on Ubuntu 20.04, WSL2

● Scholar   × 2

• Including files from another catkin workspace
• Including files from another catkin workspace

● Supporter   × 2

• Including files from another catkin workspace
• Including files from another catkin workspace

● Associate Editor   × 1

• package did not get built

● Great Answer   × 22

• run ros terminal commands within a python script
• run ros terminal commands within a python script
• ROS programming with C++
• ROS programming with C++
• Please explain how the Subscriber works
• Please explain how the Subscriber works
• roslaunch command line args
• roslaunch command line args
• what is a costmap
• what is a costmap
• custom msg throwing this error
• custom msg throwing this error
• When should a ROS package be published?
• When should a ROS package be published?
• How can we actually use Float32MultiArray to publish 2D array using Python?
• How can we actually use Float32MultiArray to publish 2D array using Python?
• X Y and Z coordinates in LaserScan
• X Y and Z coordinates in LaserScan
• Question about AMCL covariance calculation
• Question about AMCL covariance calculation
• fatal error: .h No such file or directory
• fatal error: .h No such file or directory

● Good Question   × 4

• Detecting Spheres using RANSAC in PCL
• Detecting Spheres using RANSAC in PCL
• creating a custom message type including an image
• creating a custom message type including an image

● Autobiographer   × 2