Questions tagged [extract-images]

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Is there a way to extract rosbag files without using ros packages

While ROS is useful, t's very annoying to install. I'm trying to make an extraction pipeline that is user friendly and can be used across multiple platforms and ros packages just get in the way. All I ...
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cannot extract images from bag file

i am using Ubuntu 14.04 and Ros Indigo. I am trying to extract images from a bag file, I am using this launch file: ...
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Exporting jpegs from bag file skips frames

Hi to everyone, I am following this tutorial to generate a video from a bag file in which I put the frames of a vision sensor: http://wiki.ros.org/rosbag/Tutorials/Exporting%20image%20and%20video%...
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Extract 60 fps image from bag file

I have a bag file with a 60 fps camera image stream. I want to extract all the image frames. However, even if I specified _sec_per_frame to a very small value, I still got very low fps image files: ...
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Pcl ros image extraction

I have extracted an object of interest using Euclidean Cluster Extraction in PCL. I would now like to extract the corresponding object in a 2D image that has been saved simultaneously. Are there any ...
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How to create directories in a ROS launch file

Hello, I would like to create a directory in a ROS launch file in order store images in the specified folder. How can this be done? Originally posted by mister_kay on ROS Answers with karma: 238 on ...
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Save images as 8-bit grayscale in image_view extract from rosbag file

Hello, I use a launch-file in order to extract images from a stereo-camera (stereo/left & stereo/right). Thereby I use the package "image_view" with the node "extract" to grab ...
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Extraction of Kinect RGB and Depth Data from bag has a non-constant framerate

Hi everybody, I am recording using rosbag record data from kinect inside bag files. Then I replay them, in order to extract RGB images, as shown in this tutorial : Exporting images. I modified the ...
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extract_images dropping frames

Dear All I have noticed that when I used the extract_images in image_view pkg to extract images from a bag file, it drops frames. Even if I set the "sec_per_frame" close to zero like 0....
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Exporting compressed video

I followed the linked image and video data export tutorial: http://www.ros.org/wiki/rosbag/Tutorials/Exporting%20image%20and%20video%20data However, I only save the compressed video to the bag file. ...
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Recording video from the PR2

Hey everyone, I was wondering if there were any pre-built tools for recording video streams from the PR2's camera. I need to record video that I can synchronize to sensor signals from the PR2's ...
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Extracting images from rosbag

Hi, I'm trying to extract images from a rosbag file with video, following the instructions here: http://www.ros.org/wiki/rosbag/Tutorials/Exporting%20image%20and%20video%20data I edited the roslaunch ...
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