Get depth from Kinect sensor in gazebo simulator
I'm trying to find a specific pixel's depth of `/depth/image_raw` topic that is published by Kinect sensor mounted on **Turtlebot** robot. It's what I get: www.uppic.com/do.php?img=97090) (Sorry I have...
View Articlerotating the depth image about lowest row in 3D
I have a depth image which I want to rotated about a point to project the points in another plane which is at an angle t from the plane about the col axis so, [r2 c2]' = [ct st ; -st ct] [r c]' Should...
View ArticleGet depthmap data from many turtlebots connected to the workstation at the...
Hello all, As mentioned in the tilte, i'd like to know if it's possible to get the depth map from many kinects (parts of turtlebots) connected at the same time to the workstation? to explain more: I...
View Articlegmapping depth kinect nodelet cpu overloaded
Dear all. I am just trying to fuse laser with the xtion pro, the process is done in 2D, for that I use the fake kinect. I mean I convert 3D points to 2D points using the following script in a include...
View ArticleHow to use depth value from /camera/depth/image?
I am using [this code](https://github.com/strands-project/vision/blob/master/src/show_depth.cpp) topic is: /camera/depth/image type: /sensor_msgs/Image According to the code, `(msg->data[0])` is...
View ArticleOpenCV, drawing depth map
Hi! I have a little project on C++. In this project, I I try to find sample image on depth map, received from Kinect. I check results by drawing both images (sample and current scene) in 1 window....
View ArticleProblem with converting image from depth to grayscale
I am trying to convert depth image from (/camera/depth/image) to grayscale image (/camera/rgb/image_mono). This is my code. #include "ros/ros.h" #include "sensor_msgs/Image.h" #include using namespace...
View ArticleFormat of depth value openni2_camera
I used the openni2 to install in my ARM-Board from this website [link](https://github.com/kalectro/openni2_camera), now I want to know clearly how is the format of the depth data get from Asus Xtion...
View ArticleTurtlebot depth image not showing in image_view
Hello, I want to try some opencv algorithms with depth images from the turtlebot1 (create base). I want to save them for later use because of the complexity of modifying and remaking a node. We have...
View ArticleError in depth perception using Asus Xtion
Hi, I'm trying to understand why there is such a large error in depth perception from my Asus Xtion sensor when a flat surface is being observed. When I point the sensor at a flat wall 2m away, the...
View Articlepcl::PassThrough generates error
Hi, when I create a PCL Passtrough Filter object (pcl::PassThrough) in a simple code fragment #include "ros/ros.h" #include #include int main(int argc, char **argv) { ros::init(argc, argv,...
View ArticleDepth filter of a (Kinect) image
Hi, I run a Kinect sensor and evaluate depth and camera information to track positions of small robots. The idea is to use the pointcloud to identify all robots (2.5m < z < 3m). I used a...
View ArticleDepth map from bumblebee2 camera?
Hi, I am trying to get the coordinates in space (X,Y,Z) of an object. For this, I am detecting the object using the image from the bumblebee's left camera (from here I can obtain the X and Y...
View ArticleGet data values from depth image
I'm using a turtlebot (Create base) with a kinect. I need to save images automatically (RGB and depth images) when the turtlebot is in front of a object that is less than 1 meter away. Therefore, i...
View ArticleGet average distance from a depth Rect image
I'm trying to get access to the average distance of some part of an image. What i've done : Get image from ROS, conver to to OPENCV image, save depth image, crop the image using cv::Rect. So, i get the...
View Articlehow to save rgb image and depth image
Hi all, I would like to record a scene and save depth image + rgb image and point cloud data of the kinect sensor automatically into disk in jpg or png format. I use RGBDSLAM to collect the data.And I...
View ArticleHow to retrieve XYZ co-ordinates from a raw depth image?
I am taking a depth image from /camera/depth_registered/image_raw and thresholding it to find objects within a certain range. I would like to find the xyz co-ordinates of these objects in order to...
View ArticleDepth image on amcl_demo
Hi! I'm having some trouble while trying to access the kinect depth image using amcl_demo. When i run `roslaunch openni_launch openni.launch` it works well, and i can access/see topic...
View ArticleDepthimage_to_laserscan - choose which part of the image is scanned
Hi everyone! I am using the package depthimage_to_laserscan. In this package is possible to change the parameter scan height to 480 (the height of the kinect depth image). What I wanted to do is the...
View ArticleHow to get accurate depth value from openni_camera?
Hi all, i'm using openni_camera to get depth value between a book and the ASUS Xtion pro camera. Let's say the depth value in the image center(240,320). I followed the solution...
View Article
/fit-in/580x348/filters:format(webp)/english-betterindia/media/media_files/2026/09/17/balaghat-4-2026-09-17-19-01-31.png)
