Questions tagged [stereo]

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opencv StereoSGBM disparity parameters

In my setting I am using a stereo camera which has a baseline of b = 0.092m and a focal lenght in pixels of fx = 256.667. So that when I want to constrain my setup to detect points up to a maximum ...
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Clock not publishing?

I'm launching a bumblebee2 stereo camera to get my input images. When I check the /clock topic, I don't see any timestamps being published. Is this abnormal? Originally posted by asabet on ROS ...
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Can I use image transport for the two different image topics?

Using an RGBD camera (RealSense D435), we want to log compressed color images (JPEG 'compressed'), and depth images (PNG 'compressedDepth'). The realsense driver publishes these compressed topics ...
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Best Stereo Camera that ROS Supports?

Dear Users and developers, I am looking to buy a stereo camera, specifically for outdoor self driving car applications such as mapping and localization probably by using ORB-SLAM2. I found that ZED ...
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Multiple Camera Nodes

I'm trying to use two basler cameras in a stereo configuration, utilizing the pylon_camera module to grab frames. My cameras use the USB3.0 interface. I'm struggling to connect to both camera's ...
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Stereo Calibration freezes

Greetings. I'm trying to use 2 iDS ucam USB cameras for stereo vision, but when I'm trying to use both of them with camera_calibration cameracalibrator.py it shows a little window with "display&...
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RTABMAP 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 ...
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stereo with two webcams

hi all, i have two webcams and want run these at same time. i use usb_cam package and mylaunch is this: ...
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RTABMAP 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 ...
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Faster way to get stereo images at 640x480 from Raspberry pi

Hello All, I have connected 2 logitech C930e web cameras to a Raspberry Pi3 running a Ubuntu Mate and ROS Kinetic. I want to process the images on my laptop and only remotely see what the Pi sees ...
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Which is the best Visual Slam algorithm to implement using stereo vision? Are there any source code available?

I want to implement visual SLAM using stereo camera in C/C++. I found papers on SLAM using Laser scanners and also cameras, but they are for robots. I need it for cars.Please let me know which algo to ...
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No disparity from connected and synced stereo images (stereo_image_proc)

Hi I'm running some sensors on a system with Ubuntu 14.04 and Indigo. I use two Prosilica 1350 in a stereo setup with a resolution of 1360x1024. The cameras are calibrated with cameracalibrator.py and ...
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image_view stereo_view don't show image or disparity (ROS Kinetic)

I'm running ROS Kinetic Kame on Ubuntu 16.04. I have 2 320x240 gray-scale cameras with camera_info generated by running camera_calibration. I have the following topics ...
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Can't view the pointclouds in the rviz

I use the bumblebee2 get stereo picture of the left and right image,and use the stereo_image_proc package to deal with it . i got the rect image and disparity image with no problem, and use the ...
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Stereo cameras no disparity output

Hello, I'm running 2 Point Grey Blackfly cameras in stereo and trying to get a disparity map out of them. I'm running into a ton of issues with getting to that point. I fire up the cameras with the ...
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Implementing Target Tracking on a boat

Hi everyone, I am trying to design and implement a target tracking system on a boat and I am searching to find a suitable sensor to do this. As you know we can not use Kinect outdoors. another option ...
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Large black areas on rectified stereo images

I'm using two RGB cameras. They are rotated, one clock-wise and the other counter clock-wise. I'm calibrating them with Ros Stereo Calibration node which is based on OpenCv. The output I get the ...
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Stereo calibration, the extrinsic parameters to tf?

Hello, I have two identical RGB cameras fixed to a rigid structure. They are synchronized by it's own node. Each camera is rotated clock-wise and counter clock-wise (due to where the usb connector is ...
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camera_calibration - override enough data check

Hi everybody, I'd like to calibrate a stereo rig with the camera_calibration stereo node. I have a set of pre-recorded images that I publish using a simple ad-hoc player node and with some datasets it ...
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completely black rectified images (Kind of solve....?)

Hello, I just got a couple of cameras for stereo vision. I calibrated them with camera_calibration. I got the ost.txt file which looks like this: ...
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Looking for a stereo USB camera driver for Jade

Hi, I'm new to the ROS system, and my first project would be really simple: I'd like to use the rtabmap for stereo SLAM. My problem is, I was not able to find a camera driver node. For example: http://...
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Running 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: ...
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Getting point cloud from image_rect_color using stereo_image_proc

I have a bag publishing left and right camera_info and image_rect_color topics. How can I use stereo_image_proc to get the point cloud? stereo_image_proc/disparity nodelet subscribes to image_rect and ...
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Stereo camera calibration: system error

Hi all, I'm trying to perform a calibration of a stereo usb camera using the usb_cam drivers. I am following the proper tutorial on the ROS wiki page (http://wiki.ros.org/camera_calibration/Tutorials/...
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unable to extract images from bag file

http://wiki.ros.org/rosbag/Tutorials/Exporting%20image%20and%20video%20data I am following this tutorial. after I did roslaunch export.launch, ...
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rtabmap stereo with original (mono) Bumblebee

I am trying to set up an original Bumblebee stereo camera with rtabmap. Currently, the issue that I am running into is that stereo_odometry is crashing without giving a discernible error message. <...
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How to obtain depth map from stereo camera?

Hello, I would like to try a visual odometry algorithm with the KITTI dataset. However the KITTI dataset, in my case, has only sequences of pictures with the left and right camera. I don't have any ...
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camera_calibration set_camera_info Service not found

I want to calibrate a stereo camera with camera_calibration on Indigo in Ubuntu 14.04. I have two separate webcams connected and use gscam to return the video stream. However when I want to calibrate ...
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Disparity image reconstruction

I am using two prosilica cameras in order to generate the disparity image. by the help of stereo_image_proc I can generate the disparity image and is available in /stereo/disparity_image topic. Now in ...
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disparity image generation using prosilsica camera pair

i have used two prosilica cameras. first i have launched the driver for both the cameras. left driver and right driver. once both the cameras are working i have launched the node stereo_image_proc for ...
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No diparity image for stereo vision using prosilica cameras

I have started working with two prosilica cameras for stereo vision. At first I downloaded the driver package for prosilica camera driver. I developed two launch files for two cameras in syncin1 and ...
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stereo_calibration - rotation and translation matrix from output?

I did a stereo calibration of two rgb-cameras with the camera_calibration package. ...
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How to use humanoid_localization with stereo cameras?

Hi, I started using the humanoid_localization node for localizing my robot using stereo cameras. I give the node a sensor_msgs/PointCloud2 as input, but I don't provide any sensor_msgs/LaserScan. ...
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Strange distortion in rectified image (stereo_image_proc)

Hi all, I'm new here (and new to ROS), so let me know if I'm doing anything wrong. Our underwater submarine team is having some difficulty getting stereo_image_proc to produce any stereo information. ...
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How to rectify downsampled stereo images using binning?

Hi there! This is my first post! (So far I found all the answers I needed, which is awesome!) I am writing my own node for rectifying stereo images. The reason I do this is to be able to rectify/...
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How to use stereo camera for localization?

I have a stereo camera and a sonar sensor, so I want to use this two sensors for localization, but I don't no use what software.Can you give me an idea? Originally posted by Keith on ROS Answers with ...
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Can you change ROI (region of Interest) for stereo camera without recalibrating?

Hello, I've built a high-resolution stereo camera (two Prosilica GC2450-C's), and I'm setting a region of interest that needs to be changeable without manually recalibrating the stereo camera. I'd ...
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Can the maximum stereo disparity of 128 be increased?

Hello, I have built a high-resolution stereo camera (two Prosilica GC2450-C cameras running at full-res), and I'm obtaining beautiful point-clouds that require both min_disparity and disparity_range ...
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ros_camera_info service not found for usb_cam

Hi! I use 2 USB cameras for stereo vision with the usb_cam driver in ROS Groovy and I would like to calibrate them with the camera_calibration package. I start the cameras with the following launch ...
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Stereo Vision Distance from Disparity Accuracy Measurement Testing

Hi, SO I have successfully managed to calibrate my two stereo cameras and thery are running the stereo_image_proc. I am able to view the disparity image stream generated using the image_view node. ...
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synchronizing two point grey USB cameras for Stereo using OpenCV?

Hi, I have two Firefly MV USB cameras from PoinGrey which are working with the Camera1394 node, Im able to view the images and create an package containing c++ code which uses the cv_bridge node to ...
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Depth map from a stereo camera

Hi, I want to adapt the RGBDSLAM node that works with the kinect to make it work with my stereo camera. From the Bumblebee2 i can access to the rectified images, the disparity map and the pointcloud ...
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Rectification matrix clarification in stereo vision calibration

I have a Point Grey Bumblebee2 that I am trying to integrate into ROS and I am using the camera1394stereo node to read raw images from both cameras. I have calibrated both cameras by hand and am ...
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custom stereo rig

Hi, We are building a custom stereo rig. We are using prosilica camera and using their syncin1 trigger mechanism with an external trigger board. I saw that the ros prosilica drivers had options for it ...
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Bumblebee2 output left/right images corrupted

Ubuntu 12.04 Ros: fuerte Pkg: camera1394, bumblebee2 (partial code) migration to fuerte Fotmat bumblebee2: format7_mode3 (1024x768) It seems the 2 outputs images publish well but: As mentioned here: ...
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bumblebee don't publish image --> fuerte

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How to test whether stereo cameras is synchronization?

I made a stereo camera consist of two digital cameras. I want to test whether the left and the right images is synchronization. Are there some tools or nodes which have this function? (PS:I can get ...
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Use of Kinect as a Stereo camera for Visual Odometry

I wanted to use my Kinect Camera with a stereo vision node which estimates visual Odometry. The package is viso2_ros link text . I use openni_launcher package to get Kinect data. According to ...
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How to set viso2_ros stereo parameters?

Hi everybody, I'm trying to using stereo odometry with viso2_ros library. How to set the distance from left camera to right camera? Which camera is related to base_link -> camera tf transformation? ...
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does octomap library suit for stereo vision?

Recently, I am participated an ARM navigation program. I obtain point cloud data from stereo vision, and I want to obtain octomap of the environment based on the stereo vision. so i want to know that ...
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