The site is read-only. Please transition to use Robotics Stack Exchange
| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
| 2019-09-05 09:21:55 -0500 | received badge | ● Good Question (source) |
| 2018-04-11 07:48:41 -0500 | received badge | ● Famous Question (source) |
| 2018-04-03 18:57:50 -0500 | received badge | ● Nice Question (source) |
| 2017-06-23 15:47:40 -0500 | received badge | ● Student (source) |
| 2017-05-04 02:16:46 -0500 | received badge | ● Famous Question (source) |
| 2017-03-27 09:33:39 -0500 | received badge | ● Notable Question (source) |
| 2017-03-27 05:57:22 -0500 | received badge | ● Notable Question (source) |
| 2017-03-27 05:41:59 -0500 | commented answer | Kinetic error: opencv2/core/core.hpp No such file or directory I removed the message from my cmakelists again, cleared my build and devel and compiled again - still works. " and try to link the correct libraries in my CMakeList" im going to do that anyway. much thanks and auf wiederhören ;) |
| 2017-03-27 05:20:56 -0500 | received badge | ● Popular Question (source) |
| 2017-03-27 05:10:21 -0500 | received badge | ● Supporter (source) |
| 2017-03-27 05:10:18 -0500 | commented answer | Kinetic error: opencv2/core/core.hpp No such file or directory i added message( STATUS "OpenCV Include Dir: " ${OpenCV_INCLUDE_DIRS} ) and suddenly it works - shouldnt this only give me a feedback? anyway it IS running by now - thank you good sir! |
| 2017-03-27 04:38:01 -0500 | received badge | ● Editor (source) |
| 2017-03-27 04:15:21 -0500 | commented question | Kinetic error: opencv2/core/core.hpp No such file or directory yes i did, everything is up to date this is a more or less brand new setup on my laptop - i installed everything last week (ubuntu ros and some things like dropbox and gitkraken) - cloned my repo and it worked, did the software update at some time and it stopped working. |
| 2017-03-27 04:02:34 -0500 | asked a question | Kinetic error: opencv2/core/core.hpp No such file or directory I am working with ROS kinetic on ubuntu 16.04 after a system update with Software-Updater i get an error while catkin_make-ing. worked like a charm before. get this for every file i included cv_bridge.... edit: i dont know if its important but i found the update history from that point in time when things stopped working |
| 2016-11-18 17:20:26 -0500 | received badge | ● Popular Question (source) |
| 2016-11-17 10:19:17 -0500 | asked a question | 100% CPU usage with uvc_camera_node on RaspberryPI3 I got some issues with my RaspberryPi3 and using ROS uvc_camera_node on it RaspberryPi3 Model B Ubuntu Mate alexander@alexander-raspberry:~$ rosversion ros <unversioned> (think its kinetic) alexander@alexander-raspberry:~$ rosversion roscpp 1.12.2 Main PC Ubuntu 16.04 LTS alexander@alexander-Tower:~$ rosversion ros <unversioned> (know its kinetic) alexander@alexander-Tower:~$ rosversion roscpp 1.12.6 My main pc is wich I work on. The Raspberry is connected to my wireless LAN and has a camera (Logitech C920) connected via USB. I want to "stream" the video via ROS from the raspberry on my PC but it seems like I run into 100% cpu usage on the Raspberry everytime I start uvc_camera_node even though I only run it on 640*480 30fps. Also the framerate is stuttery and not near 30fps. My thought process was that there is some encoding/reencoding of the video going on on the Raspberry. Though the C920 has an inbuild hardware H.264 Encoder. I only want to use /image_raw/compressed topic so the bandwith of the LAN doesnt get too stressed. Is there any way I can force the Raspberry to not encode (if that's what it does) the video, or maybe it doesnt use the hardware encoding of the camera, so how can i force the use of it. Or is this issue caused by the uvc_camera_node publishing /image_raw/(uncompressed) though noone subscribed to it. I really appreciate any help! ------ this is the output i get when running uvc_camera_node ------------- alexander@alexander-raspberry:~$ rosrun uvc_camera uvc_camera_node _width:=640 _height:=480 _fps:=30 INFO 1479386842.189379129: using default calibration URL INFO 1479386842.190345371: camera calibration URL: file:///home/alexander/.ros/camera_info/camera.yaml INFO 1479386842.191168021: Unable to open camera calibration file /home/alexander/.ros/camera_info/camera.yaml WARN 1479386842.191663746: Camera calibration file /home/alexander/.ros/camera_info/camera.yaml not found. opening /dev/video0 pixfmt 0 = 'YUYV' desc = 'YUV 4:2:2 (YUYV)' discrete: 640x480: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 160x90: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 160x120: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 176x144: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 320x180: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 320x240: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 352x288: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 432x240: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 640x360: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 800x448: 1/30 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 800x600: 1/24 1/20 1/15 1/10 2/15 1/5 discrete: 864x480: 1/24 1/20 1/15 1 ... |
ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.