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2014-01-28 17:22:13 -0500 marked best answer Rosout topic, non-string messages

As I read I understand that all topics messages are displayed in rosout topic. But as I see the messages that are different than a simple string aren't displayed, isn't it?

So what can I do if I want to show all the messages from all topics?. Is there a log file? or can I change the rosout configuration?. Perhaps the unique method is to subscribe to every topic?

Thank you.

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2012-05-22 21:27:04 -0500 commented answer OpenCV Patent

That seems to make sense. But what happens if I include openCV under BSD license in a hardware an distribute that hardware explaining that openCV is free and free of charge.

Is that "comercial use"?

2012-05-22 06:15:22 -0500 answered a question OpenCV Patent

That seems to make sense. But what happens if I include openCV under BSD license in a hardware an distribute that hardware explaining that openCV is free and free of charge.

Is that "comercial use"?

2012-05-22 02:44:27 -0500 asked a question OpenCV Patent

I found that some algorithms included in openCV are patented:

  • SIFT
  • SURF

I'm not sure if there is any other algorithm patented.

I find this at sift.cpp:

Note that restrictions imposed by this patent (and possibly others) exist independently of and may be in conflict with the freedoms granted in this license, which refers to copyright of the program, not patents for any methods that it implements. Both copyright and patent law must be obeyed to legally use and redistribute this program and it is not the purpose of this license to induce you to infringe any patents or other property right claims or to contest validity of any such claims. If you redistribute or use the program, then this license merely protects you from committing copyright infringement. It does not protect you from committing patent infringement. So, before you do anything with this program, make sure that you have permission to do so not merely in terms of copyright, but also in terms of patent law.

Are this algorithms included in ROS package? Can we use them in commercial applications?

Thank you

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2011-10-21 04:15:02 -0500 answered a question cannot get Julius to run properly

try to run the command with padsp, like this: $ padsp julius...

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2011-09-15 05:25:32 -0500 marked best answer rosjava: Couldn't find executable named run.py

The rosjava API is still in flux. The run.py executable has not been released into the debian version; instead you have to install rosjava from source:

hg clone https://rosjava.googlecode.com/hg rosjava_core
2011-09-11 21:37:09 -0500 asked a question rosjava: Couldn't find executable named run.py

I'm trying to run a java program but I have this error: [rosrun] Couldn't find executable named run.py below /opt/ros/electric/stacks/rosjava_core/rosjava_bootstrap

As I see I couldn't found run.py. But I just installed the rosjava from the repository for electric.

What can be happening? Where must be the run.py script?

Thank you

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2011-09-04 23:00:53 -0500 commented answer Programmatic way to stop roslaunch
The problem is that I don't know which are the nodes that the laucher will run. So, if I kill the launcher process, the nodes will be killed?
2011-07-18 08:50:58 -0500 marked best answer Programmatic way to stop roslaunch

Ctrl-C works.

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2011-07-05 23:15:15 -0500 answered a question Programmatic way to stop roslaunch

Thank you for this answers, but for me it is not a solution because it is another node which launch the roslaunch, and of course there are other nodes, so I cannot kill all nodes with kill. Another idea?

2011-07-05 21:55:41 -0500 asked a question Programmatic way to stop roslaunch

I saw in the description of roslaunch this: "roslaunch is an important tool that manages the start and stop of ROS nodes" But I am not able to find how to stop a roslaunch. Is there any method to kill all nodes of a roslaunch in one instructions?

Thank You