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Questions tagged [depth-camera]

14 questions
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Calculate 3D cordinates from with camera matrix and know distance

I have been struggeling with this quiz question. This was part of FSG 2022 registration quiz and I can't figure out how to solve it At first I thought that I can use extrinsic and intrinsic parameters to calculate 3D coordinates using equations…
Pisikoll
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How to check for substantial change in two depth frames?

My goal is to detect any change in frames(single channel. each pixel is depth value). On app init, I take average of all corresponding pixels of first 30 frames so one average background frame will be created. On new frames arrival I subtract each…
Mitesh Patel
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Estimate camera orientation from ground 3D points?

Given a set of 3D points in camera's perspective corresponding to a planar surface (ground), is there any fast efficient method to find the orientation of the plane regarding the camera's plane? Or is it only possible by running heavier "surface…
joaocandre
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Intel RealSense D435i frames drop on Intel® RealSense™ SDK 2.0

It works like a charm when the RGB module of the camera has a resolution of 1280x720, and FPS as 15 frames/sec. The depth mode and IMU work fine in all the settings. But if the resolution is increased above 1280x720 - 15 frames/sec, I face a Runtime…
CATALUNA84
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Using Orbbec Embedded S camera from ARM with OpenNI

I have an ARM SoC that I've connected an Embedded S camera to. I can see the camera is connected: $ lsusb Bus 001 Device 006: ID 2bc5:050b Bus 001 Device 007: ID 2bc5:060b I downloaded OpenNI_2.3.0.63.zip from https://orbbec3d.com/develop/ then…
parsley72
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Retrieving intrinsic matrix from two stereo depth sensor that resulted in a single depth image

I have one stereo camera that outputs the depth and RGB images. I have retrieved the distortion and camera matrix using the checkered board(intrinsic matrix for RGB camera). However, in the above discussion it seems like we need the depth sensor…
Harshal Shirsath
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How do we fix our flickering depth image when using an Orbecc Astra Camera and Rviz?

We try to set up the Orbbec Astra Embedded S camera with ROS and our goal is to detect objects by reconstructing a 3D point cloud from the camera images. We are using ROS Noetic and the ROS-Package "astra-camera"…
astra123
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Reducing "bridges" between circular objects from images recorded with an Intel Realsense D400 depth camera

I'm using an Intel Realsense D400 depth camera to record depth images of chicken eggs. I have noticed that at the points where the eggs are close together, "bridges" are generated in the depth image. See the image below, I've circled some bridges in…
Zciurus
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I tried to plot the points of a point cloud using matplotlib but the plot obtained is inclined when compared to original point cloud

I want the plot not to be inclined, can someone help me on this I took the points with X,Y,Z co-ordinates and tried to plot on python using matplotlib
sree-9
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Is there a way to obtain raw time-of-flight correlation measurements from Kinect V2 camera?

I'm trying to get the raw time-of-flight correlation images from the Microsoft Kinect V2 camera. I'm familiar with the general principles of time-of-flight imaging, but I'm having trouble accessing the raw images from the Kinect V2. Is there a way…
Gaurav Mishra
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depth camera interpretation of data ROS

I am using ROS with a depth camera, and the data for each pixel is 4 bytes. Example: 0,0,192,127 I am trying to extract the distance to a point but I don't know what the 4 numbers represent.
Saveer Jain
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CVPixelBufferRef: Video Buffer and Depth Buffer have different orientations

Right now I'm working with Depth camera at iOS since I want to measure distance to the camera of certain points at the frame. I did all necessary setup in my camera solution and now I have two CVPixelBufferRef in my hands - one with pixel data and…
Eugene Alexeev
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How to convert Depth Image to Pointcloud in ROS?

I am using simulated kinect depth camera to receive depth images from the URDF present in my gazebo world. I have made a filter using python which only takes a part of the depth image as shown in the image and now i want to visualize this depth…
user10079031
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How to find flat regions based on depth information

I have a drone that can fly autonomously and I want it to land safely.. I have a depth camera underneath it and now I can't find a way to detect flat regions to tell the drone to land on it. I'm using realsense D435i camera..this is a sample of…
lofy
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