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Questions tagged [depth-image]

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360 deg pointcloud of environment using intelreasense 435i

I have depth cameras on 4 side of robot . I want to make a single pointcloud message combining all the pointcloud messages from 4 cameras. Later want to use so obtained 360 pointcloud view of ...
Sidharth Jeyabalsing's user avatar
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2 answers
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3D LIDAR and Depth camera

I am using Ouster 3D-Lidar and depth cameras in a single robot.How can both be placed in a robot to avoid any cross-talk interference?
sidharth jeyabal's user avatar
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What post processing method was used to generate depth image as shown in the given example?

The 32FN method is a fast and effective method to estimate surface normal from a structured depth image. It appears the authors uses a "in-painting" method (please correct me if I am wrong) ...
Azmyin Md. Kamal's user avatar
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Using openni kinect depth camera in Gazebo Garden

I am trying to get more customization lever into my depth camera in Gazebo Garden. So far I am just using the default depth_camera sensor tag but there I have some alignment issues as described here ...
kilianf's user avatar
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Could not convert depth image to laserscan: scan_height ( 1 pixels) is too large for the image height

Camera : IntelRealsense 435D Computing device : Raspberrypi I'm trying to convert depthimage_to_laserscan ,while doing so the terminal shows an error message ->"Could not convert depth image ...
Sidharth Jeyabalsing's user avatar
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1 answer
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How to use the openni kinect plugin

I am trying to get a depth camera going in Gazebo Garden. I saw many tutorials like this one which use the openni kinect plugin. (sdf code below) Now when I implement a depth camera with this plugin ...
kilianf's user avatar
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1 answer
227 views

Gazebo Camera and depth camera with same parameters show different fov's

I implemented a stereo camera in Gazebo by simply duplicating a camera and shifting it to the right. This works. To get a GT for my stereo algorithm I created a depth camera at the same position as my ...
kilianf's user avatar
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1 answer
151 views

Ros Humble Camera Deep Learning

I want to depict a Model in 3d which is basically a rectanglular piece of Weld in Ros Humble Gazebo and Rviz. Could you give some suggestions on which camera do i need to us? Do i need a Depth Camera ...
Kedar's user avatar
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1 answer
125 views

reading depth in mm from ros depth image

I want to read a depth image from ros. I subscribe to the /camera/aligned_depth_to_color/image_raw/compressed topic published by a intel realsense D435i camera. I ...
Franci's user avatar
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1 answer
174 views

RTABmap with ROS2 & gazebo simulated camera

Hey guys, I'm trying to simulated a test setup with gazebo. I have a depth camera, rgbd_cammera added to my model and bridged the topics: color/image_raw, depth/image_raw, camera_info, /color/points ...
Coen H's user avatar
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1 answer
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Extracting depth images using rosrun command using realsense camera

I entered this command to extract depth images from intel realsense R200 camera: ...
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MATLAB 16uc1 or 32fc1 Conversion

I have some image processing code in MATLAB and am attempting to use it with ROS. I read in a PointCloud2 object and execute readRGB(ptcloud) and ...
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1 answer
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Astra Pro RGB & Depth publishing rate not quite same. [Closed]

Hello all, I want to use Orbbec Astra Pro in ROS Indigo inside Ubuntu 14.04. I have installed the ROS compatible OPenNI2 and now able to run the launch code. The Astra Pro Camera starts perfectly ...
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1 answer
11 views

depth_image to point cloud

Hello, I want to convert my depth_image to point_cloud, so I use the package "depth_image_proc". The depth_image_proc to point_cloud_xyz needs two infos: camera_info (sensor_msgs/CameraInfo)...
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2 answers
65 views

Convert depth image to sensor_msgs::PointCloud2

Hi all, I have an Asus Xtion Pro RGB-D camera, I'm using this node to acquire images: https://github.com/xqms/xtion which has tremendous performance improvements w.r.t. OpenNI2. To convert the depth ...
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1 answer
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Convert raw depth data from depth image to meters (Kinect v2)

Hello, I am using Kinect v2 and I am trying to convert its raw values from the depth image to meters. I am subscribing to the image_depth_rect topic. Firstly, I ...
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1 answer
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Difference between depth point cloud and image depth (in their usage)

Hello, I have recently started doing image processing with the Kinect v2 (with opencv) and I was thinking of adding the third dimension to this processing, but I have a basic question about the usage ...
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1 answer
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Destination encoding for ros image to opencv image conversion

I am trying to create an OpenCV image from a ros image using this . I am subscribing to a topic /camera/depth/img_rect_color which is of the type ...
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1 answer
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piontcloud to depth image codification

Hello, I have a depth image in a cv::Mat(height,widht,CV_64F) where each pixel is either 0 if it has no 3D or the distance to produce a 3D point allong the optical ray through that pixel. This ...
user avatar
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2 answers
56 views

Problem of saving depth image

I try to use the code below to save one frame of depth iamge from topic /camera/depth/image_raw, but the problem is I could only get a image looks black. When I read it in Matlab, the matrix elements ...
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1 answer
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Programms to calibrate depth_image from kinect

I try to find programs to get the values for the intrinsic and extrinsic parameters but RGBDemo has old ubuntu-package dependencies (have (14.04)) I cannot solve and Matlab toolbox from Herrera is ...
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simple way to view a depth image topic from command line?

image_view pukes when you try to view a depth image (typically 16 bit single channel): $ rosrun image_view image_view image:=/hsrb/head_rgbd_sensor/depth_registered/image_raw [ INFO] [1439901837....
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1 answer
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How to get coordinates from depthImage

Hi I am working with depthImages. This is my first time with camera models, so I do not understand how to get the information I need from camera_info topic. My inputs are a CameraInfo and a Image(...
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1 answer
10 views

extracting depth image from .bag file

I want to extract depth image from .bag file just like the tutorial. But when I run $ roslaunch export.launch , the error occurred as below: ...
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1 answer
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How to extract the world co-ordinates from a PCL

Hi, I am currently trying to extract the world co-ordinates from a pointcloud reconstructed scene. I am currently using ROS-Hydro. I have followed these two as my reference. http://answers.ros.org/...
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1 answer
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xtion depth image size problem

Hi All, I can't work out why, when I use ROS Topic I'm seeing that the depth frame size is "height: 120xwidth: 160" but the camera info is reporting "height: 480xwidth: 640" This ...
MarkyMark's user avatar
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1 answer
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laser scanner or depth camera

what is an affordable (good enough quality) laser scanner or depth camera (to support navigation, path planning, and obstacle avoidance)? we plan to buy a few hundred units. currently, we're using ...
user avatar
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2 answers
18 views

Depth image from a Disparity image

Hi there, I am using a Bumblebee2 stereo camera, and with the "stereo_image_proc" node, I am able to get the disparity image of the scene, as well as the point cloud... But It would be more ...
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1 answer
16 views

how to access depth values form /camera/depth/image_raw?

Hey , i am using ros hydro and ubuntu 12.04 (LTS) , i need to know how to convert the 8-bit depth data which i receive from kinect in the topic /camera/depth/image_raw to depth of individual points in ...
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2 answers
9 views

conversion of depht image coordinates to world coordinates (u,v,d) to (x,y,z)

Hi, I implemented a object detection classifier working on rgb and depth data (from openni_launch) which provides object center coordinates in the image plane (u,v). Now I want to convert those image ...
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1 answer
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What does scan_height do?

We are using the scan_height parameter and it seems like nothing is changing at all. From the description we thought that the parameter would change the number of rows being looked at for the scan, ...
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1 answer
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openni depth image problem

Can someone tell me why my depth image looks like that? I decompress my images of a bag like that: ...
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1 answer
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Image Transport Compressed issue for Depth Image - ROS Fuerte

Hi, I am using Depth Image for one of my applications, where I need to use compressed image transport for some server/client app. If I use param -> "_image_transport:=raw", everything ...
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1 answer
2 views

Extracting kinect depth_registered image

Hi everybody, I am using Ubuntu 12.10 with ROS Groovy. My problem is that I would like to extract the depth_registered image, in the same way I do it with the rgb image (in order to be able to do some ...
user avatar
0 votes
1 answer
20 views

how to save depth image loss-less to disk

Hi all, I would like to record a scene and save depth image + rgb image of the kinect sensor. therefore I use cv_bridge and save the images to png format. After that I want to use rgbdslam with my ...
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1 answer
66 views

depth image to CV_16UC1

Hi, I am currently trying to capture images and localizing a colored landmark in the kinect frame. I first tried detecting the color in a downsampled pointcloud but that was just too slow, and so now ...
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1 answer
2 views

Problem installing openni_kinect

I started using ROS last week and tried installing openni_kinect. I followed the steps here: http://www.ros.org/wiki/openni_kinect Everything seems to work properly until I get to step 4 when I start ...
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2 answers
2 views

save data from the kinect

Hi, im running ROS electric on Ubuntu 10.10 and I want to know how I can save depth and/or RGB image from the kinect?! Originally posted by bassim on ROS Answers with karma: 1 on 2011-11-10 Post ...
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1 answer
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rxbag plot does not show any message fields

I'm trying to use the "plot" plugin for rxbag in order to plot (x,y,z) depth data from a kinect. I'm able to open the plot gui, but when I click on the cog icon to select fields to plot, ...
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1 answer
1 view

data from kinect,rgb and depth images

hi everyone,I installed Diamondback on Ubuntu 10.10,and the kinect openNI package,the problem I have so far is that I dont get any data from the kinect,neither rgb nor depth image!! please if you know ...
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1 answer
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kinect openni,error message,no devices connected!! on ubuntu-diamondback

hi,Im trying to get depth image and RGB image from the Kinect,i followed the step below : Installing ROS for Kinect. This document describes how to install ROS in order to use the Kinect and the ...
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