JeyP4's profile - activity

@Mike Scheutzow. The problem is that it is consuming double 4G bandwidth. My doubt is VPN encryption overhead, but I

@Mike Scheutzow. The problem is that it is consuming double 4G bandwidth.

@Mike Scheutzow. The problem is that it is consuming double 4G bandwidth.

@Mike Scheutzow. The problem is that it is consuming double 4G bandwidth.

Thanks @Mike Scheutzow. I made an important observation and performed a major edit in the issue. Double bandwidth consum

Double network bandwidth consumption than rostopic bw! ROS1 Hi I see expected network bandwidth consumption on physical

Double network bandwidth consumption than rostopic bw! ROS1 Hi I see expected network bandwidth consumption on physical

Double network bandwidth consumption than rostopic bw! ROS1 Hi Ros Noetic Double network bandwidth consumption than 'r

Double network bandwidth consumption than rostopic bw! ROS1 Hi Ros Noetic Double network bandwidth consumption than 'r

Double network bandwidth consumption than rostopic bw! Hi Ros Noetic I see the exact same double bandwidth consumption

Double network bandwidth consumption than rostopic bw! Hi Ros Noetic I see the exact same double bandwidth consumption

Thanks @Mike Scheutzow. I opened a new topic Double network bandwidth consumption than rostopic bw!

Double network bandwidth consumption than rostopic bw! Hi Ros Noetic I see the exact same double bandwidth consumption

I don't have any idea about the discovery server. I see the exact same double bandwidth consumption issue in ROS1 noeti

I don't have any idea about the discovery server. I see the exact same double bandwidth consumption issue in ROS1 noeti

I don't have any idea about the discovery server. I see the exact same double bandwidth consumption issue in ROS1 noeti

If one sub1.callback is on execution and meanwhile msg arrives on other sub2. I want to process sub2.callback parallely. Is it possible? How?

ros::Subscriber image_sub= nh.subscribe("/rgb, 2, &class::imCallback, &class);
ros::Subscriber depth_sub= nh.subscribe("/depth", 2, &class::depthCallback, &class);

I read many posts on callback queues, MultiThreadedSpinner, boost. I am confused which way is good for my application !!

rostopic pub -s -r 1 /clock rosgraph_msgs/Clock '{clock: now}'

rostopic pub -s -r 1 /clock rosgraph_msgs/Clock '{clock: now}'

rostopic pub -s -r 1 /clock rosgraph_msgs/Clock '{clock: now}'

Hello. I want to initialize a subscriber only when

if(i>0){              // 'i' is received as node argument
  ros::Subscriber sub = nh.subscribe("/image_rect_color/compressed", 1, imageCallback);
  }

Problem I am facing is: main thread comes into if-scope but couldn't initialize the subscriber. I guess problem is introduction of new scope.

BTW:This code is in main().

How can this problem be solved?

Thanks

What is the Difference between image_transport::Subscriber AND ros::Subscriber?.

Which is more efficient?

Undefined reference to boost after source compilation of vision_opencv !! Hello My aim is to link image-transport-plug

Undefined reference to boost after source compilation of vision_opencv !! Hello My aim is to link image-transport-plug

Undefined reference to boost after source compilation of vision_opencv !! Hello My aim is to link image-transport-plug

Undefined reference to boost after source compilation of vision_opencv !! Hello My aim is to link image-transport-plug

How to force compressed_image_transport to use libturbojpeg? Hello In my Jetson Xavier, a see 'libjpegturbo' library is

Hello Some time ago, I remember /compressedimage topic was consuming 700KB/s bandwidth for 640*480 image @ 30 fps at 80% quality.

After that, I think I started learning gstreamer and I re-install libjpeg-dev or libjpeg-turbo8 or something I did.

Now when I resume working on /compressedimage topic, I am realizing that it is consuming 1.2MB/s bandwidth for same 640*480 @ 30fps at 80% quality.

Which jpeg library does compressed image transport plugin use?

I am wishing to have lowest bandwidth possible for 80% jpeg quality.

How can I publish I420 image data as sensor_msgs/Image? (Image transport plugin) From gstreamer v4l2src plugin, I get gs