Packages 'libswscale and libavcodec' for building usb_cam
I'm using a Jetson TX1 board running indigo and trying to install usb_cam. I got it from github into my src folder. However, when I try to use catkin_make I get CMake Errors where it cannot find the...
View ArticleRunning 2 different cameras using usb_cam
Hello, I'm using the usb_cam package and I'm trying to launch my 2 cameras at the same time. I'm using the following launch file: <launch><group ns="camera1"><node...
View ArticleHow to use image_proc/crop_decimate to crop an image?
Hi, I used usb_cam driver to publish a camera raw image, and I'm trying to crop the published image using image_proc/crop_decimate. when I viewed the output of image_proc/crop_decimate, I did not see...
View Articleusb_cam package as nodelet
Hi there, At the moment I use the usb_cam package from the bosch_drivers stack to acquire data from a webcam on an an ARM board. (I used the uvc_cam package also but the colors are weird). Because the...
View ArticleRGBD colour balance?
I am using Astra Pro with usb_cam. I calibrate the hue using v4lcup. Images are pulled using v4l driver. When I finish calibration the images looks fine in rviz. However, when I pass images from...
View ArticleLaunching usb_cam on a remote Machine
Hi ROS-Community, as the title already says I want to Launch the usb_cam Node on a Raspberry Pi from my main Computer. Although there are many Question regarding the usb_cam not working, I can't find...
View ArticleMobius camera interface in ROS
Hi, I would like to work with **mobius actioncam** and ROS on **nvidia tegra tk1**. I've tried both **uvc_camera** and **usb_cam** packages but without success. **uvc_camera** gives me this error: "I...
View Articleuvc_camera gets a terrible image and usb_camera doesn't set framerate
I have a Logitech c920 webcam that I want to use with ROS. I originally installed uvc_camera, but it gets a terrible quality image from the camera. Then I tried usb_cam, which gets a fantastic quality...
View ArticleMultiple usb webcams with their own calibration file
I launched two webcams with the usb_cam package (ROS Indigo). My launchfile is very simple: And the correct output is [ INFO] [1508058286.935975255]: using default calibration URL [ INFO]...
View Articleusb_cam outbuf size mismatch; possibly different format?
I'm using usb_cam with a camera that supports mjpeg, but I'm getting errors. The camera supports these formats: $ v4l2-ctl --device=0 --list-formats-ext ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video...
View Articlehow to increase the resolution of logitech c920 to detect aruco markers more...
I am using logitech c920(about 12ft above ground) to detect an aruco marker using the aruco_ros library. The resolution is set to 640x480 but at this resolution the aruco marker is not being detected...
View Articleusb_cam randomly lowers the frame rate to 8
I am using a logitech c525 and the usb_cam ros package. I am using [this](http://sauravag.com/2015/03/how-to-tracking-aruco-marker-using-a-usb-webcam-and-ro/)(step#8 in this link) to get a stream of...
View Article[head_camera] does not match name /camera/image_raw
I have the following launch file to use visp_auto_track with 2 cam's However, when I run this, I get the warnings: [ INFO] [1515587518.127209475]: camera calibration URL:...
View ArticleApriltag topics do not return any information but execute without errors or...
I can launch the apriltag_detector node without errors or warnings but the topics do not return any information. The command 'rostopics list' will show all the correct topics but they do not return any...
View ArticleChange node name
Hi, i have this code from visp_auto_tracker, i want to change the name of the node What i want is to change this line: Into this: But the launch file won't work after that change..
View ArticleCamera Stream Muliplexer
HI Everyone, The robot platform I am working on has 6 cameras onboard with different views. The Coms system only has the bandwidth for one of these views, what is the best (quickest/easiest) way to...
View ArticleLaunch two camera nodes for stereo calibration
Hello, I am attempting to launch two camera nodes via a launch file in order to calibrate them via stereo. Below is my launch file: I am pretty new to ROS and need some help getting this to output two...
View Article[ERROR] [1519888351.478412390]: Cannot identify '/dev/video0': 2, No such...
hi, I'm trying to use `usb_cam-test.launch` in `usb_cam` package to read my web camera, but it keeps returning error: Cannot identify '/dev/video0': 2, No such file or directory ---------- **Update:**...
View Articlerun visp_auto_tracker without display
Hi, I am running my visp_auto_tracker with usb_cam remotely via ssh, without a screen attached to the robot. Visp_auto_tracker is encountering a display error as there is no screen to display the...
View Articlehow to run ros usb_cam package and webrtc on the same video device?
Hi, As title, I would like to run ros usb_cam driver and webrtc on the same video device (say /dev/video0) together. If I run usb_cam driver first, then webrtc seems to to be failed to open the video...
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