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Extracting compressed image data from bag file results in doubled up or...

Hi, I'm trying to extract compressed images from a bag file. Here is my launch file: This results in some frames not being saved and some frames being saves multiple times. Also a lot of frames are...

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Reindex .bag using rosbag API

Hello to everyone, I am trying to reindex a file using rosbag API in a Python script. When running `rosbag reindex <.bag file>` in the command line, everything goes as usual (it creates a backup...

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rqt_graph when playing a rosbag

Hello, I am really new with ROS and I am having some problems with rqt_graph. I would like to play a rosbag file and watch all the nodes and topics with rqt_graph as it was during execution....

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How to repair a rosbag file download missing some parts

I have a big size (few gigas) rosbag file , I download earlier, and then find out it is missing some info like the image ( form rqt_bag) shows:...

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DIGITS plug-ins to read ROSBag

Is there a Nvidia DIGITS plug-in that can read ROSBag data directly for neural network training?

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Is rosbag available on ROS2 and how to benchmark it?

Hello everyone, I'm using ROS2 that I obtained from here: https://github.com/ros2/ros2/wiki/Linux-Development-Setup. Running it on Ubuntu 16.04 with kernel 4.16.7. I am tasked with benchmarking writing...

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Reconstruct PointCloud from RGBD data

I followed [this wiki entry](http://wiki.ros.org/openni_launch/Tutorials/BagRecordingPlayback) and recorded RGBD data using rosbag record /rgbd/depth_registered/camera_info...

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hz of our sensor's the topic was DECREASED, When I record some data with rosbag.

Hello, experts. I used rosbag to acquire our sensor data as camera, lidar. You can reference below spec. Camera Node : 1980x1208 (FHD, RGB), 20 hz Lidar Node : 64 Channel, 20 hz I recorded topics on pc...

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How to record robot odometry in multiple bagfiles after resetting the robot's...

I'm running the nodes rosaria, rosaria_client , hokuyo node and avt_vimba camera to record some datasets of routes around campus roads with rosbag in a Pioneer 3AT robot. The robot runs Ubuntu 14.04...

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bag file is empty after rosbag reindexing and fixing .bag.active file

Hello everyone! I'm trying to convert `.bag.active` file into `.bag` file so I can play it inside `rqt_bag` program. The thing is, I tried to follow [this...

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image_transport rosbag issue

Has anyone else seen problems recording rosbags for all topics of a node using image_transport? > ERROR >...

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Cleanly kill rosbag with python script

I am running several ROS nodes (kinetic) on Raspbian, including a rosbag node that records all published topics. The script below is activated by pressing a physical button and is meant to ensure that...

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Custom image message type

I'm writing to enquire about possibility of ROS supporting or creating a custom sensor message type for video stream (images). Our product, based on the FPGA, generates the rosbag file and logs one...

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how record rosbag with python

Hello I use the command line (Terminal) to record images (RGB, RGBD), joy, and IMU data>> rosbag record -O subset /camera/depth/image_raw /camera/rgb/image_raw /joy...

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datatype/md5sum error, publishing with rosbag

I am facing this error when I try to launch my pose3D.launch node : > [ERROR] [1537274177.574505613]:> Client [/pose3D] wants topic /odo to> have datatype/md5sum>...

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Change message type

When i run the following command line: rostopic info /vehicle/odometry I get this response. I would like to change the type of the msg, from motion_common_msg/Odometry to interval_map/odometry, which I...

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Export bag of CompressedImage to disk without decoding

I have a bag of compressed images (*/camera/image/compressed*). I wrote a Python script which reads the bagfile using the Python API and writes JPEGs to disk in this way: cv_img =...

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jade - rosbag play with remap

Hi, I would like to play a bag file with rosbag and remap the topics (e.g.: /myTopic:=/playback/myTopic). I tried with **launch file**: `` and from **command line** also ( rosbag play mybag.bag...

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Creating a bag file out of a image sequence

Let's say I have a series of images and want to create a bag file out of them to use as input for the camera calibration. Is it even necessary to create the bag for the calibration or is there another...

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Array length handling when serializing messages

I am trying to code a rosbag serializer, and I am trying to generate code from the messages, like https://github.com/ros/genmsg I noticed there's an inconsitency in how to handle unbounded array...

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