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2014-04-21 22:15:46 -0500 asked a question could not find executable file

Hi I am trying to use Voxelized Shape and Color Histograms (VOSCH) in order to recognize an object, I follow this link ,but when I run :

rosrun vosch example_vosch rospack find vosch/data/sample_cone_green.pcd

I got the Error that

Couldn't find executable named example_vosch below /opt/ros/fuerte/stacks/mapping/vosch

can anyone help me to fix it?

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2014-04-20 21:41:39 -0500 commented answer detect object with color

Thank's Adreno I think it's good. but I got problem in VOSCH installation. I follow this link ,but when I run : rosrun vosch example_vosch `rospack find vosch`/data/sample_cone_green.pcd I got the Error that Couldn't find executable named example_vosch below /opt/ros/fuerte/stacks/mapping/vosch. what is the problem?

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2014-04-19 21:24:58 -0500 asked a question detect object with color

Hi I am using the tabletop object detector to determine some object on point cloud database.

I was wondering if I would able to somehow also extract color information about the objects. I want to know that can I use color information or RGB image by tabletop library? If not ,does anybody know of a tool that does anything similar???

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2014-02-23 01:23:12 -0500 asked a question problem in slam gmapping

I am trying to get a 2d map. I use ubuntu 12.04, fuerte and kinect. I am following the slam_gmapping tutorial


My execution sequence is as follow:

1.rosmake gmapping

2.rosbag record -O mylaserdata /base_scan /tf

then I drive the robot around , and after that I Kill the rosbag instance


4.rosparam set use_sim_time true

5.rosrun gmapping slam_gmapping scan:=base_scan

6.rosbag play mylaserdata.bag

7.rosrun map_server map_saver

And then when I execute 7, I couldn't get map file. actually it always said "waiting for the map". Also I couldn't see my map on rviz

help me plz

2014-02-16 20:47:49 -0500 asked a question how can I get the axis of a point in rgbdslam

I am using ros fuerte on ubuntu 12.04 and have a questions:

how can I extract or get the axis of a point in my slam by Rgbdslam?

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2014-02-03 23:02:21 -0500 asked a question problem in installing RGBD Slam

I use Ubuntu 12.04 and ROS Fuerte. I want to install RGBD slam.I try above commends in my ros package path

> $svn co
$rosdep update

but while I type this command > rosdep install rgbdslam_freiburg I got these error

> ERROR: Rosdep cannot find all required resources to answer your query Missing resource rgbdslam_freiburg ROS path [0]=/opt/ros/fuerte/share/ros ROS path [1]=/opt/ros/fuerte/share ROS path [2]=/opt/ros/fuerte/stacks

2014-02-02 21:40:15 -0500 asked a question Displaying in rviz

When I open rviz, I chosed pointcloud2 by click on add bottom but I don't know how and where should I set topic as

> /camera/depth/points

for it .

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2014-02-02 18:36:08 -0500 asked a question How to connect the kinect in fuerte

I just brought a kinect and wanted to the rgdbslam I download the Sensor Kinect and installed it. after that I issued "roslaunch openni_launch openni.launch" and I got the following error messages"

>[ WARN] [1391410256.310823768]: Camera calibration file /home/ghazaleh/.ros/camera_info/rgb_B00365209795052B.yaml not found. <

I have installed openni package by above commands:

> sudo apt-get install ros-fuerte-openni-camera sudo apt-get install ros-fuerte-openni-launch

the connection is ok because when I run

> freenect-glview

I can see the picture does anyone knows what's going on ?

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2014-01-25 20:53:16 -0500 asked a question Where should I start for image processing ?

I am new In ROS. I am working on a quadrotor, And I want to start image processing by ROS, in order to mapping,detecting faces, detecting objects and letters. I am looking for some tips and instruction to start it as a beginner.