What exactly does the parameters p_x,p_y and p_size obtained as a result of...
I have used the ROS camera_calibration package provided in the ROS website. The package is working properly but I'm not able to understand what the does parameters p_x,p_y & p_size implies in the...
View ArticleRemapping topics in gazebo, not working?
I am trying to remap a camera stream from /camera to /camera1_ns in gazebo. But there is no /camera1_ns listed with rostopic list. Is this approach correct or should it be done otherwise?
View ArticleHow to Open Ricoh Theta S Camera in Ros
Hello; I am new in ros and ubuntu want to open ricoh theta S in ros with uvb_camera I can open webcam but I can not open ricoh theta s camera How can I open it?
View ArticleRTABMAP with two stereo cameras
Hello, first of all thanks to Mathieu Labbe for all his hard work on rtabmap and for bringing it to ROS! I would like to use two stereo cameras to aid in SLAM and also path planning. I have been...
View Articleopenni2_launch ASUS Xtion 2 No devices connected
Hi everyone, I attempted to ASUS Xtion 2 with openni2.launch, but I could not. And I received the following ROS_INFO message. [ROS_INFO]No matching device found.... waiting for devices. Reason:...
View ArticleDetection rate of AprilTag is less than fps of Camera. Why?
Hi, I am trying to run AprilTag for ROS using bluefox2. The usb camera has a default fps of 30. However, when I am trying to detect Apriltag, I am getting an detection rate of 7.067.. or 8.34.... It...
View Articlerealsense SR300 detect object much closer
i use SR300 on my robot for obstacle avoidance my ros is indigo and use [official package](http://wiki.ros.org/realsense_camera) for the camera i put the robot afront of a wall, at first the camera...
View ArticleNeed a camera with constant focus
Hello, I use a usb camera to localize NAO robot by tracking a marker placed on its head (using ar_pose marker tracker). My problem is with the camera autofocus which results in the poor performance...
View ArticleCamera Pose Calibration Valid_Pattern_Ratio_Threshold and Circle Spacing
Hi, I started working with the Camera Pose Calibration Package by Delft Robotics (https://github.com/delftrobotics/camera_pose_calibration) to find extrinsic calibration parameters for a Realsense...
View ArticleFlycapture software for point grey camera
Hi, I am trying to use the point grey camera with ROS on the jackal. I am connecting to the jackal using a wireless router connected to my MAC laptop. I am running ubuntu on a VM. I give a static IP...
View ArticleWeb-server-video remote access
Hi, I'm trying to access the web-video-server. I got it to work on localhost, the url in the doc works and everything is fine. However I can't access it remotely ( on a different laptop on the same...
View ArticleError in building Raspberry Pi Camera Module with ROS Indigo in Jessie
I am following this [link](https://github.com/japonophile/rosberrypi_cam) for installing ROS driver for Raspberry Pi camera module. I have ROS Indigo installed in Jessie, I also have Opencv installed...
View ArticleCamera and 2d Laser sensor calibration
Hi, does anyone know a package to perform the calibration of a camera and a 2d Laser sensor? I am using the camera Logitech C310 and the Laser sensor hokuyo urg-04lx-ug01. I have tried several public...
View Articletf rviz camera
Hi, I need to se the position of a ball in rviz using mi camera and tf. The thing is that i have the open cv code but i do not have idea how to create a code for tf that subscribe into my image (from...
View ArticleRTABMAP with multiple ZED stereo cameras
Hi, I would like to use multiple ZED stereo cameras for the 3D mapping with RTABMAP. But I notice RTABMAP only supports single stereo camera or stereo camera+laser. Could anyone kindly give me some...
View Articleraspicam_node
I am following the raspicam_node instructions from [raspicam_node on github](https://github.com/dganbold/raspicam_node). I am using raspbian, I installed ROS Kinetic from source. I installed the...
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 ArticlePoint Cloud stretched in one dimension
I have calibrated a stereo camera using [this](http://wiki.ros.org/camera_calibration/Tutorials/StereoCalibration), and I am getting this point cloud: ![image...
View ArticlePoint grey camera image capture
Hi, I am trying to use a point grey camera with a jackal to capture images and process them by subscribing to the image topic in ROS. Here is what I am doing: - I have installed the point grey camera...
View ArticleRVIZ Camera Plugin render distance
Hi all i want to display a visualization_msgs::Marker in the camera plugin of RVIZ. For my task the marker has to be far away from the camera frame. I noticed that a distance of 100m between the...
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