asdfgf's profile - activity

Hi,

I was trying to use pointgrey camera with ROS on Jetson TK1. i am trying to install the driver using

sudo apt-get install ros-jade-pointgrey-camera-driver

But I am getting the following error :

*Reading package lists... Done

Building dependency tree

Reading state information... Done

E: Unable to locate package ros-jade-pointgrey-camera-driver*

Can I know how to resolve this problem ?

Thanks in advance

Oh thank you, I hadn't seen about latch before.

Can I know how can we know if the data is present on a topic ? Will the data remain on the topic until next data is published on that topic ?

I would like to realize an action and reaction pair. Action being publishing data on topic A and reaction being publishing data on topic B, this is supposed to happen within a certain interval.

Hi,

I would like to install RV-Monitor v 1.3 or higher in order to use ROSMOP. I tried to download RV-Monitor from this link : https://www.runtimeverification.com/m... but I'm getting an error saying An error while loading the archieve.

Can I know what needs to be done to correct this ? I wanted RV-Monitor in order to use ROSMOP and ROSRV.

Thanks in advance.

I am using usb_cam driver to use a camera. When i try to run the driver using rosrun usb_cam usb_cam_node , I get the following error. Screenshot from 2016-06-30 17:43:53.png

Cannot identify '/dev/video0' : 2, No such file or directory

Can i know how to fix this ?

Hi,

I am finding trouble in viewing the image on '/camera/image' topic. A blank screen comes up when I use the following command.

rosrun image_view image_view image:=/camera/image

But when I try to look on topic /camera/image_raw I get a monochrome image. When I try /camera/image_color topic, I get a green shaded image. I would like to get and normal (rgb )image , I see only the following topics :

/camera/camera_info

/camera/camera_nodelet/parameter_descriptions

/camera/camera_nodelet/parameter_updates

/camera/camera_nodelet_manager/bond

/camera/image

/camera/image_color

/camera/image_mono

/camera/image_proc_debayer/parameter_descriptions

/camera/image_proc_debayer/parameter_updates

/camera/image_raw

/diagnostics

/image_view_1467243696220883524/parameter_descriptions

/image_view_1467243696220883524/parameter_updates

/rosout

/rosout_agg

Can I know how can I get normal RGB image ?

Thanks in advance.

yes, true.. thank you :) I changed the data type and the error got eliminated.

Oops, sorry. Have posted the error.

HI,

I am using pointgrey camera. I have installed the pointgrey camera driver successfully. When I launch the camera node, I can see the following topics : /camera/camera_info , /camera/image_raw and /camera/image. But when I try to subscribe to camera/image topic, I am getting the following error.

[ERROR] [1467135193.921150993]: Client [/Camera_Object_Detection] wants topic /camera/image to have datatype/md5sum [sensor_msgs/Image/060021388200f6f0f447d0fcd9c64743], but our version has [wfov_camera_msgs/WFOVImage/807d0db423ab5e1561cfeba09a10bc88]. Dropping connection.

Can I know how to fix this ?

Thanks.

Supply voltage was less than the voltage range mentioned in the data sheet. Once I increased the voltage, I could get the correct distance.

Can I Know how did you resolve this issue ?

Hi,

I am using Hokuyo UST 10LX Lidar. I have downloaded the wrapper and I am able to get scan data on /scan topic. But the values from lidar does not match with the actual distance between the obstacle and the lidar. Can I know how to map data coming out from wrapper on /scan topic to real distance ?

Thanks in advance.

Hi,

Can I know how to interpret lidar data obtained on scan topic. I am using Hokuyo UST-10LX. Are the published values in cms or m ? I could not get this from the datasheet.

Thanks in advance.