ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange
Ask Your Question

visp_tracker /object_position dimension [closed]

asked 2017-06-19 09:27:30 -0500

CesarHoyosM gravatar image

updated 2017-06-20 03:25:41 -0500

Hello there, I have followed the tutorial.

Then, I can changed this tutorial by creating my own .launch file, where I give to the node the params I need for get images from my cams.

Now, I want to control the head of my robot, and for that I have developed a rospy node which subscribe to /object_position but the point is (and sorry if it is a obvius question) that I don't know and I haven't found it, which are the position and rotation dimensions. I mean, this position, I assume that are not in real world coordinates, but in scalated pixels?

How can I convert this values to real world values in order to develop my control?

Thanks for your answers.

edit retag flag offensive reopen merge delete

Closed for the following reason the question is answered, right answer was accepted by CesarHoyosM
close date 2017-06-20 06:26:02.713105


Well, I have been looking around, and I have found this website: With this, what I am not sure now, is what information is given by /object_position with two vectors: Position {x, y, z} and Rotation {x, y, z, w}

CesarHoyosM gravatar image CesarHoyosM  ( 2017-06-20 03:30:31 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted

answered 2017-06-20 06:25:31 -0500

CesarHoyosM gravatar image

Ok! I am going to solve this issue myself. The fact is this /object_position in deed returns the actual object position in meters. My main issue was that I had done a calibration for stereovision in place of a calibration for each camera.

edit flag offensive delete link more

Question Tools

1 follower


Asked: 2017-06-19 09:27:30 -0500

Seen: 159 times

Last updated: Jun 20 '17