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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 message?
The message contents are binary encoded, so Matlab doesn't know how to extract the data.
If you want to implement it yourself, you can take a look at how ROS does it in the read and write functions: https://github.com/ros-perception/per... http://docs.ros.org/api/sensor_msgs/h...
In the short term, it may be a lot easier for you to work with the depth image instead, as Matlab has all sorts of image processing/decoding functions.
I have the same problem. Did you manage to read it?
Hello
I am new in ROS.
I am using MATLAB with ROS Hydro, I couldn't extract the cloud of points, in the "Trutlebotcommunicator" classdef I am using when I am whriting
h.CloudPointsSub = h.Node.addSubscriber('/camera/depth/points', 'sensor_msgs/PointCloud2',1);
h.CloudPointsSub.setOnNewMessageListeners({@h.pointsCallback});
the code stck, and I should restart matlab.
Pleas could you explain to me How did read the PointCloud2 data from sensor_msgs/PointCloud2 message.
Asked: 2014-08-15 14:41:28 -0500
Seen: 774 times
Last updated: Jan 13 '15
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