How to convert a PointCloud via tf2
Hey there, I tried to write some pretty simple code with tf2 and I'm stuck already. How does one transform a `pcl::PointCloud<...>` when using `tf2` (and, less importantly, how about transforming...
View ArticleCoordinates of a specific pixel in depthimage published by Kinect
I am looking for an answer for hours and finally I am asking it here. I am using CMvision to find a specific color in Kinect's sight and I want to find the real world coordinates of the object with...
View ArticleUsing PointCloud in AMCL
Hi, I am using the AMCL filter from ROS packages and I have configured it following the instructions on the website. I am wondering if it is possible to change the sensor input from the laser to a...
View ArticleRviz does not display Pointcloud2 if encoding not FLOAT32
HI all, I have written driver for a ToF camera and I have found the following problem. I publish the 3D coordinates as they come from the device, INT16. I create it as follow:...
View ArticleTransforming PointCloud2
I would like to know if somebody knows what is the substitute for the function of transformPointCloud() for PointCloud2 data type as in this...
View ArticleConversion from sensor_msgs::PointCloud2 to pcl::PointCloud
Hi all, I am digging deep in this forum, but I'm getting lost. I am using ROS Groovy and receiving a sensor_msgs::PointCloud2 from a depth_image_proc nodelet and I want to process it using PCL 1.7....
View ArticleUnable to set color transformer in rviz
Hey guys, I am trying to visulaize color point clouds on rviz, but i see nothing. I am using depth_image_proc/point_cloud_xyzrgb nodelet, Basically I am unable to set Color transformer to RGB8 in Rviz....
View Articlestereo_image_proc PointCloud2 transform
Im using a Bumblebee2 stereo camera, and using the camera1394stereo package to interface with the camera. I then plug the outputs of that node into stereo_image_proc, to get a point cloud, which i...
View ArticleMatlab Ros Extract Point Cloud 2 BLOB
I'm using Matlab with ROS support, and I'm successfully reading PointCloud2 data from a Kinect. How can I extract the x,y,z,rgb data from the BLOB structure contained in the *sensor_msgs/PointCloud2*...
View ArticleVelodyne UDP packets, ROS messages, and PCD files: Where does the time go?
Here is what I understand about the tool chain that turns Velodyne UDP packets into PCD files: 1. ([input.cc](https://github.com/ros-drivers/velodyne/blob/master/velodyne_driver/src/lib/input.cc#L88))...
View ArticleUnderstanding /camera/depth/points
What does the value in the 'data' field of the data published by /camera/depth/points represent? They are supposed to represent the distance of every pixel from the Kinect center point? How to I...
View Articlepointcloud to XYZ without .pcd file
I want to subscribe for PointCloud2 data from kinect and work on the encoded XYZ data subsequently in the same program without saving it as .pcd file and again retrieving it back for XYZ data for real...
View Articleprinting kinect point cloud data alone gives garbage
I have subscribed to /camera/depth/points to get the PointCloud2 data from kinect. When I try to print the PointCloud2 data alone leaving out the headers, height and width etc i get a pool of garbage...
View Articlepointcloud_to_laserscan package not working in ROS indigo
The pointcloud_to_laserscan package is not working properly in ROS Indigo. The Indigo build is done recently and seems to contain some error. As required by the node I have published the pointcloud...
View ArticleOpenCL clEnqueueWriteBuffer Error
Hi folks, I am running the Kinect One package from here: https://github.com/code-iai/iai_kinect2 When I display "Camera" in Rviz everything works fine, but when I try to display the PointCloud2 in...
View ArticleUsing PointCloud2 data (getting x,y points) in Python
In a Python ROS node, I've subscribed to a sensor_msgs/LaserScan topic, converted them to sensor_msgs/PointCloud2 messages, and am trying to extract X, Y (and Z) point coordinates. The transformation...
View ArticleOctoMap not publishing anything ??
Hi I am trying to convert PointCloud2 into OctoMap. I publish the point cloud (from a ply file) on topic 'cloud_in' with frame_id set to 'base_link'. When I run rostopic echo cloud_in I can see all the...
View ArticleProblem creating OctoMap from PointCloud2
Hi I am trying to create an octomap from PointCloud2. I load the pointcloud from my ply file convert it into PointCloud2 and publish it on 'cloud_in' topic. The messages are published file. I then...
View ArticleCan't Display PointCloud2 in Rviz
I'm trying to display a monochrome image/inverse depth map as a PointCloud2 in Rviz, but I'm getting garbage (basically random points) and can't figure out what I'm doing wrong. I've verified that the...
View ArticleVisualize a .ply file with a pointcloud in Rviz
Hi everybody, i'm looking for a method that could help me visualize a pointcloud in .ply format, saved from LSD (pressing the "p" while it is mapping) in Rviz. did somebody could help me? thanks
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