[Solved]Problem with rosmake and rosrun usb_cam usb_cam_node
Good afternoon partners Following the tutorial for installing usb_cam on groovy > http://wiki.ros.org/ROSberryPi/Setting%20up%20ROS%20on%20RaspberryPi#ROS_Peripherals I can roscd usb_cam and I have...
View ArticleHow can I see images from usb_cam ?
Good afternoon. I have usb_camera installed on my groovy raspbian. I have done : rosparam set usb_cam/pixel_format yuyv and after that I wrote : rosrun usb_cam usb_cam_node I´m being given : >...
View Articleusb_cam: [ERROR]Webcam: expected picture but didn't get it...
I'm trying to use ``` rosrun usb_cam usb_cam_node ``` to read my web camera, but it keeps returning error: >[ERROR] [1392890872.217213339]: Webcam: expected picture but didn't get it...>[ERROR]...
View ArticleProblem Retrieving Image from USB_cam
Hi guys I've trying to get images from USB_cam . I did the same as this partner here :http://answers.ros.org/question/131331/usb_cam-errorwebcam-expected-picture-but-didnt-get-it/ But when I try to get...
View Articlered colour detection
i want to detect red colour in ros hydro on ubuntu 12.04. i am using opencv . how do i do it i am usinga usb_cam driver
View ArticleTime difference in showed and actual webcam image
Hi all, I'm using a Pandaboard ES (ARM) and would like to synchronize a webcam (logitech c920) and a kinect. I want to grab single frames on a keypress and save pcd and jpg to disk. Unfortunately is...
View Articlehow can I receive single images from an image_transport stream using a...
Hello, I try to setup a Service which provides single images out of an image_transport stream to a client requesting an image. I found this Question 42909 (Karma not sufficient to post links, sorry.)...
View ArticleWebcam does not display when using visp_auto_tracker
Hi everyone, I am trying to get a Logitech webcam to work with visp_auto_tracker to do some QR tracking. I am running ROS Hydro on Ubuntu. I started off with usb_cam and that worked fine with the...
View ArticleProblem displaying webcam on Beaglebone Black ROS Hydro
Hi everyone, I have Ubuntu 12.04 and ROS Hydro installed on a Beaglebone Black and I am trying to connect a webcam to it. When I do lsusb, i see the webcam listed and it is recognized as /dev/video0....
View ArticleHow to subscribe visp_auto_tracker to /usb_cam/image_raw/compressed?
Hi all, I am wondering if this is possible, since just subscribing to /usb_cam/image_raw causes a lot of lag, and the visp_auto_tracker debug display window will freeze up. Here is my launch file to...
View Articleptam and cameracalibrator won't start
Hi, i'm trying to get ptam working but it doesn't start up. I use usb_cam and since it shouted that it had no calibrationfile i created one with the...
View ArticleCamera model not correctly specified.
I'm trying to get rpg_svo - a project implementing semi-direct visual odometry - running. I can run the sample codes on a dataset, but not on a camera live stream. I am using Indigo with the latest...
View Articlevisp_auto_tracker does not output pose data and unable to track properly
Hi all, visp_auto_tracker was working perfectly fine for me until today...when I ran visp_auto_tracker, I got the message below repeatedly as the webcam tracked the QR code. *********** Parsing XML for...
View ArticleCamera Calibration Uses Wrong Aspect Ratio from USB Camera
We are trying to calibrate a USB camera running at 1080p (i.e., 1920x1080). When launching `usb_cam` and then `image_view`, the image comes up correctly at the right aspect ration. `rosrun usb_cam...
View Articleuvc_camera: pixel format unavailable with USBTV007 EasyCAP
Hi guys, I'm using a USBTV007 EasyCap (ID 1b71:3002 by lsusb) to capture wireless video. The system can already see it in /dev/ as video0 and I can use VLC media player to display the video on the...
View ArticleMinoru 3D webcam calibration ros indigo
Hi everyone, i just bought a minoru 3d webcam to try using it as a low cost RGBD sensor, i'm working in ros indigo, i tried calibrationg the camera with the cameracalibrator.py util, the problem is...
View Articlepkg_check_modules doesn't get the right libavcodec
I've struggled some time to make usb_cam to support mjpeg format usb camera, as libavcodec and libswscale that come with ROS somehow cannot work properly. it complains No accelerated colorspace...
View ArticleHow to use a sdk (non-ros header/lib/binaries) in ros package?
I am trying to use a camera sdk to write a camera stream publisher in ros. It's not a uvc camera, so I cannot use usb_cam or other similar nodes to access the camera stream. I've already had the camera...
View ArticleCamera calibration parameters not appropriate for SVO package
Hello, I have been trying to use the [SVO package](https://github.com/uzh-rpg/rpg_svo) using Ubuntu 12.04 and ROS Hydro, but I ran into trouble with the calibration file. In the [SVO calibration...
View Articlecamera motion with viso2_ros
Hello, (sorry for my English, not my native language) Im using ROS Indigo on Ubuntu 14.04 and my goal is to estimate robot motion via visual odometry by using ROS. Im using usb_cam and image_proc to...
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