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2016-10-17 16:56:03 -0600 marked best answer Problem with camera while running SVO live

hi everybody,

I'm trying to launch the live of SVO, but it gives me immediately this type of error:

[ INFO] [1418401675.780991894]: SVO initialized
[ INFO] [1418401675.791371920]: Found parameter: svo/cam_topic, value: /ardrone/front/image_raw
[ INFO] [1418401734.849896333]: RESET
terminate called after throwing an instance of 'std::runtime_error'
  what():  Frame: provided image has not the same size as the camera model or image is not grayscale
[svo-1] process has died [pid 11270, exit code -6, cmd /home/jacopo/catkin_ws/devel/lib/svo_ros/vo __name:=svo __log:=/home/jacopo/.ros/log/8b460c10-8218-11e4-ba87-001e6480e144/svo-1.log].
log file: /home/jacopo/.ros/log/8b460c10-8218-11e4-ba87-001e6480e144/svo-1*.log
all processes on machine have died, roslaunch will exit
shutting down processing monitor...
... shutting down processing monitor complete

how i could solve it?? thanks

2016-06-18 11:02:48 -0600 marked best answer Rviz: fixed frame [world] does not exist

Hi everybody, i'm working on Rviz, after opening it:

rosrun rviz rviz

and open a configuration:


that the instuction of SVO gives me

it give me an errore on the fixed frame:

No tf data.  Actual error: Fixed Frame [world] does not exist

and i cannot display nothing on my grid and cannot change my markers that doesn't work on image... i'm new on rviz, did someone know how solve the problem?? cause yesterday was working well.... for more precision, i'm working on the svo instruction, with the video from the bag.


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2016-05-08 16:10:58 -0600 marked best answer Visualize a .ply file with a pointcloud in Rviz

Hi everybody,

i'm looking for a method that could help me visualize a pointcloud in .ply format, saved from LSD (pressing the "p" while it is mapping) in Rviz. did somebody could help me? thanks

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2015-03-26 09:49:59 -0600 asked a question how to scale a pointcloud in octomap

Hi, i'm using octomap to obtain a 2dmap from a 3d pointcloud. i'm looking for a method for scale the pointcloud in meter, knowing the distance between two knowing points of the pointcloud. there is a way to modify the distances and so obtain a right scaled 2dmap?

2015-03-12 11:24:09 -0600 asked a question problem installing scan_tools

Hi everybody. Installing the "scan_tools" on hydro 12.04, while give the catkin_make, it gives me:

gsl home: 
FATAL_ERROR,FindGSL.cmake: gsl-config not found. Please set it manually. GSL_CONFIG=GSL_CONFIG-NOTFOUND
CMake Error at sm/CMakeLists.txt:30 (MESSAGE):
  GSL not found.

-- Configuring incomplete, errors occurred!
make[2]: *** [scan_tools/laser_scan_matcher/csm/stamp/csm_src-configure] Error 1
make[1]: *** [scan_tools/laser_scan_matcher/CMakeFiles/csm_src.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 50%] Built target image_rotate_exe
make: *** [all] Error 2
Invoking "make" failed

do somebody knows how to solve?? thanks

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2015-02-24 09:10:29 -0600 commented answer problem with catkin and pcl_ros

i cannot understand what from-paths src and --ignore-src -- means can you explain well or link some pages? cause i really cannot understand what you'd write.

2015-02-24 08:07:03 -0600 asked a question problem with catkin and pcl_ros

hi, after give from terminal the catkin_make command, it give an error that say:

CMake Error at /home/jacopo/catkin_ws/devel/share/pcl_ros/cmake/pcl_rosConfig.cmake:106 (message):
  Project 'pcl_ros' specifies '/usr/include/ni' as an include dir, which is
  not found.  It does neither exist as an absolute directory nor in

i've found in the web that the manual removing of the /usr/include/ni from the /opt/ros/hydro/share/pcl_ros/cmake/pcl_rosConfig.cmake can solve the problem. after removing it, you could see that the error is no more from that directory, but from the devel directory of catkin... how i can solve that problem??

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2015-02-18 02:47:13 -0600 commented answer Visualize a .ply file with a pointcloud in Rviz

using catkin, i have only the same directories etc that you could see here i'm doing it in the wrong way?? after i use catkin_make and it run, but without the lib ply and i cannot use your apt-get

2015-02-17 11:19:59 -0600 commented answer Visualize a .ply file with a pointcloud in Rviz

i don't have pcl-1.7 this is probably the cause of the missing libraries... but i cannot find it for hydro, all i can find on github for hydro is: and libraries aren't in there

2015-02-17 08:32:16 -0600 commented answer Visualize a .ply file with a pointcloud in Rviz

i'm having some problems: for using functions that convert/visualize from a .ply file, i need the ply:io.h for the #include, but i don't have it in my pcl directory. i'm using ros hydro. somebody could helpe me?