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2016-05-09 20:46:55 -0500 marked best answer indigo source installation problems:..

i first had installed ros indigo using apt,then after uninstalling i installed ros from source,now i am facing so many problems..

  • whenever i use rosdep for installing dependencies it gets installed to my /opt/ros/indigo location and when i catkin_makes them it shows messages showing the required dependency packages were not found
  • when i tried to roslaunch a demo(hector_quadrotor outdoor flight demo) my rviz shows error and exits Which earlier used to work fine

can anybody help me?

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2016-03-25 11:45:18 -0500 answered a question Choosing Good Stereo Parameters

I had this problem just

rosbag check -g migration_rule.bmr rotating_detergent.bag

then edit the migration_rule.bmr file so that valid = True instead of valid=False

rosbag fix rotating_detergent.bag repaired_rotating_detergent.bag migration_rule.bmr
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2016-03-04 05:20:32 -0500 commented answer rtabmap_ros loop closure rejection when doing tutorial

thanks for your suggestion on new version i rebuild the entire package after downloading the new version it worked...... thanks

2016-03-03 22:53:14 -0500 commented answer rtabmap_ros loop closure rejection when doing tutorial

The loop closure error was solved but now i get this error: updateMapCloud() map id of node X not found as in the picture i have posted

2016-03-03 22:33:21 -0500 commented answer rtabmap_ros loop closure rejection when doing tutorial

thanks matlabbe

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2016-02-26 09:07:09 -0500 commented answer pointcloud2 problem

Thanks william for your replay

2016-02-26 07:52:50 -0500 asked a question rtabmap_ros loop closure rejection when doing tutorial

I am using ros indigo in ubuntu 14.04 when i am running the stereo outdoor tutorial in rtabmap_ros with Stereo_outdoorB.bag file as in :link i get a loop closure rejction error at the end of the bagfile

here I have atached the screenshots : image description

image description

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2016-02-10 08:24:52 -0500 commented question lsd_slam visualization problem

I am also geting this same problem did you found any solution?

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2016-01-26 02:35:36 -0500 answered a question how to use SGBM algorithm in stereo_image_proc

I found it the algorithm is set to StereoBM by default in the

image_pipeline/stereo_image_proc/cfg/Disparity.cfg

file at line 14 : gen.add("stereo_algorithm", int_t, 0, "sterel algorithm", 0, 0, 1, edit_method = stereo_algo_enum)

change the second last 0 in the line to 1 it will do... :)

2016-01-25 23:50:33 -0500 asked a question how to use SGBM algorithm in stereo_image_proc

stereo_image_proc by default uses StereoBM algorithm how can we change this to SGBM

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2016-01-25 19:29:45 -0500 commented question GLib-GObject error in indigo image_view

did you got any fix for this I am also facing the same problem link

2016-01-25 11:07:55 -0500 asked a question image_view stereo_view do not show image or disparity

I have been trying to view my stereo disparity image using image_view stereo_view but whenever i run it i get two blank left and right windows with the following error in terminal

init done opengl support available

(stereo_view:14758): GLib-GObject-WARNING **: invalid uninstantiatable type '(null)' in cast to 'GtkWidget'

(stereo_view:14758): GLib-GObject-WARNING **: instance of invalid non-instantiatable type '(null)'

(stereo_view:14758): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(stereo_view:14758): GLib-GObject-WARNING **: invalid uninstantiatable type '(null)' in cast to 'GtkWidget'

(stereo_view:14758): GLib-GObject-WARNING **: instance of invalid non-instantiatable type '(null)'

(stereo_view:14758): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(stereo_view:14758): GLib-GObject-WARNING **: invalid uninstantiatable type '(null)' in cast to 'GtkWidget'

(stereo_view:14758): GLib-GObject-WARNING **: instance of invalid non-instantiatable type '(null)'

(stereo_view:14758): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed * /camera/left/image_rect_color * /camera/right/image_rect_color * /camera/disparity

  • I was able to get the images in rviz using camera display
  • I am using ubuntu 14.04 with indigo distro

  • how can i fix this problem?

anybody please help me

2016-01-25 03:14:27 -0500 edited question pointcloud2 problem

I know that there are lots of question on his topic but after going through most of them i was not able to find solution for my problem

  • I am using stereo_image_proc for getting point cloud from stereo cam driver as i have provided below, i successfully gets both left and right camera output but i cant see pointcloud2 in rviz

  • I tried echoing the camera/point2 topic but the result seems weird[or is it ok ,I am new to these stuffs?]image description image description

  • is my output ok?if yes then what might be the reason i dont get pointcloud in rviz(I have tried rotating the window)

Edit: sorry after i again tried rotating i got the cloud but it seems weird rviz_result