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2016-08-30 08:01:01 -0500 | answered a question | Depth map estimation from monocular camera Hi Cerin ... I'm sorry don't have an answer for you but just wanted to connect to someone else trying to use Monocular Slam since I'm not getting any answers to my question posed several months ago [... search for this string in the Answers Forum: "How to display a 3D Map on RVIZ using ORB_SLAM2?". Please read that to understand where I am with ROS and Slam. Are you using ORB SLAM or ORB SLAM2? It's my understanding that you only get a depth 'scaled' map using a monocular camera since there is no Lidar or other range measurement device. The article links you provided are very interesting as an approach to extract depth from a singe camera. As a Software Developer, I've done some image processing in the past to extract image features for automatic object recognition and classification for the defense industry. If you think we can help each other, please contact me at pbarile@gmail.com . Thanks, Phil |
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2016-08-18 15:11:53 -0500 | commented question | my camera driver doesn't publish image to /camera/image_raw I'm looking to collaborate with someone who has been running ORB_SLAM. I can successfully execute the ORB_SLAM2 ROS Package using this command: roslaunch ORB_SLAM ExampleGroovyOrNewer.launch. RVIZ displays correctly as well but I've got some other questions. Can you help? |
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2016-07-30 12:51:07 -0500 | asked a question | How to display a 3D Map on RVIZ using ORB_SLAM2? I'm a ROS newbie. I'm using ROS Indigo in a virtual session using Ubuntu 14.04 on my MacBook Pro laptop using my built-in camera. I can successfully execute the ORB_SLAM2 ROS Package using this command: roslaunch ORB_SLAM ExampleGroovyOrNewer.launch. Using RVIZ, I can see the a map with the keyframes etc under Global Options/Fixed Frame, I'm not sure what you call this type of map ... it appears to be a 'Point Cloud' display). However I would also like to visualize the actual 3D Map that is being built on the fly by ORB_SLAM2. I have attached an example image below of the type of Map that I would like to display on RVIZ (or maybe there is another tool I need to use). When I try to 'add' a 'Map' to RVIZ, I don't see any published topics to select from. Do I need, for example, to use the 'Map_server' or maybe the 'Gmapping' ROS packages to accomplish this. Also, I can't seem to determine the differences between ORB_SLAM and ORB_SLAM2. Can you shed some light on this. Should I have started with ORB_SLAM? Can someone please help me with this question? Thanks ...Phil  |
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2016-06-11 12:09:26 -0500 | answered a question | ROS Environmental variable problem I'm continuing my response here since there isn't enough space in a 'Comment' field. parallels@ubuntu:~/Documents/catkin_ws$ source devel/setup.bash /home/parallels/Documents/catkin_wsparallels@ubuntu:~/Documents/catkin_ws$ echo $PATH /opt/ros/indigo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games parallels@ubuntu:~/Documents/catkin_ws$ env | grep ROS [no environmental variables were printed out here] parallels@ubuntu:~/Documents/catkin_ws$ catkin_init_workspace Traceback (most recent call last): File "/opt/ros/indigo/bin/catkin_init_workspace", line 11, in <module> from catkin.init_workspace import init_workspace ImportError: No module named catkin.init_workspace parallels@ubuntu:~/Documents/catkin_ws$ catkin_make Traceback (most recent call last): File "/opt/ros/indigo/bin/catkin_make", line 12, in <module> from catkin.init_workspace import init_workspace ImportError: No module named catkin.init_workspace At this point, I believe I should uninstall ROS and then reinstall ROS. Would you agree? Can you please tell me the safest way to uninstall all ROS components so I can start clean again? Thanks for your help! |
2016-06-11 11:58:30 -0500 | commented question | ROS Environmental variable problem My apologies, since I've tried several other things since I posted this question, I can't duplicate that catkin_init_workspace error discussed above. However, I am posting more command line outputs below to indicate my current state: parallels@ubuntu:~/Documents/catkin_ws$ source devel/setup.bash / |
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2016-06-10 18:21:54 -0500 | asked a question | ROS Environmental variable problem I"m running ROS Indigo virtually using Ubuntu 14.04 on my Mac Book laptop using Parallels. All was ok initially, I was able to execute ROS packages and do some openCV software development with the iSight camera. I'm not sure what happened but now when I open up a new terminal, sourcing the Here's my path indicating that ROS indigo is in it: Examining my ROS Env. variables yields a blank screen indicating none are set: Can someone please help with this problem? I have been struggling with this for hours now to no avail. Thanks, Phil UPDATE1: I'm continuing my response here since there isn't enough space in a 'Comment' field. At this point, I believe I should uninstall ROS and then reinstall ROS. Would you agree? Can you please tell me the safest way to uninstall all ROS components so I can start clean again? Thanks for your help! I checked my python path and it's matches yours so I decided to uninstall ROS and all my packages and then reinstall ROS. I also installed the image_transport package [with this command: git clone https://github.com/ros-perception/ima... ] which is the package I believe I was using successfully with my first install. After reinstalling ROS and sourcing 1) My ROS environmental variables are blank. Can you please tell me how/where ... (more) |
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2016-05-21 21:28:59 -0500 | commented answer | How to use the Mac book pro's iSight camera in ROS for the webcam? Dan, thanks for the help! I got further by installing the usb_cam package and then executing it. I'm getting the same 'CalibrationFile is missing' error that is described at the very bottom of this link: http://laukh.com/ros/usb_cam/ . Can you tell me how/if I need to calibrate? I'm very confused. |
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2016-05-19 11:45:16 -0500 | asked a question | How to use the Mac book pro's iSight camera in ROS for the webcam? I'm a ROS newbie and would like to use the internal camera called I believe iSight on my Mac Book Pro laptop to do some image processing development. I would like to know if anyone else has gone down this path and learn from their experinces. I'm running Parallels with Ubuntu 14.04 on my Mac. Thanks for any help, Phil. |
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2016-03-26 10:15:06 -0500 | commented question | Python Error while using 'rostopic list' Thanks for the help! I tried to follow the instructions on the link you supplied but was somewhat confused on some of the parameters used in the commands i.e. what is the <problematic_formula> Anyway, I decided to go ahead and start over running ROS under Ubuntu on my Mac using Oracle's VirtualBox |
2016-03-25 00:10:04 -0500 | asked a question | Python Error while using 'rostopic list' I've successfully installed ROS & Gazebo using Homebrew and following the Wiki instructions on my Mac, running Yosemite 10.10.5. Both of these execute ok. But when I try to run Any help with a solution would be greatly appreciated. Below is a full error dump when it crashes. Thanks, Phil (more) |