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Questions tagged [pose]

66 questions
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How to do tf2 transform and pose publish with ROS2 and humble?

I like to publish a pose using IMU and Monocular Image from ORB_SLAM3 in ROS2 and humble. I made a function. But some how not familiar with tf2 in ROS2 . So I got some errors. I include the tf2 header and also declared in CMakeList.txt dependencies.…
Macedon971
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how to estimate yaw of object in stereo vision

If I can obtain the R/L face images by stereo cameras and get two eyes' position, Is there any way to estimate the theta(red) shown in the following figure? Please give me some advice, Thanks for your help! Stereo Vision for angle estimation We may…
wj wang
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Relative pose transformation between poses of 2 frames

I want to calculate the relative pose transformation between poses of 2 frames/images that are taken from the camera. I have the ground truth poses of those frames in 3x4 matrix [R t] form. What is the formula for calculating the relative pose of…
helloword
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How can I fix the 'blob size is zero' error in Python 2.7 while using pose recognition with OpenCV and Caffe models?

So I am working with Python 2.7.9 trying to use a pose recognition code, but I keep getting the following error telling me my blob size is zero. What would be the process for fixing such an issue? `import cv2 # Load the pre-trained Caffe…
jostiff
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How to transform the skeleton keyppints from NTU format to COCO format?

I am working on an action recognition project and I'm trying to use PoseConv3D as model. I noticed that the model uses the COCO keypoints format(which is the figure below) while I have the NTU skeletons, which are in this other format. My question…
Neskelogth
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OpenCV head rotation to world coordinates

I am using WHENet to estimate head pose of an individual filmed by two cameras. The model gives me roll, pitch and yaw relative to each camera. Roll, pitch and yaw equal 0 when the indidual faces exactly the camera. My camera are calibrated (both…
dcoccjcz
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Blazepose Mediapipe: Differences between Python and Javascript implementation

I was building a system that processes poses from videos using Python, and then, a Javascript (react) application that estimates the user pose on webcam in real time, and compares it with the Python processed poses. The thing is that I started…
Dhiogo Corrêa
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Is there a way to resolve rotational ambiguity if I know the direction of the z axis?

I’m trying to use apriltag to detect tags that are face up on a tables surface, therefore I am always able to determine the tags z forward vector relative to the camera. I’m unfortunately getting some flickering of tags and wanted to know if there…
user3287393
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OpenCV triangulation with 3 cameras

I am conducting an experiment where I have 3 fixed cameras synchronized to record an individual evolving in a limited space (which is entirely coverd by the field of each camera). I use a pre-trained AI model to detect more than 20 pose landmarks at…
dcoccjcz
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Solve PnP or Estimate Pose Single Markers: which is better?

I need a program to estimate the pose of an ArUco marker, and, as far as I know, I can code it with two different functions: cv2.solvePnp() or cv2.aruco.estimatePoseSingleMarker(). Which one is better? I read about them, and it seems easier to use…
Matheus
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C# Pose Shim from Task

I've created a shim: using Pose; Shim consoleShim = Shim.Replace(() => Debug.WriteLine(Is.A())).With( delegate (string s) { Debug.WriteLine($"Hijacked: {s}"); }); The following runs as expected and prints "Hijacked: Test…
Matthew Conradie
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How to get absolute pose of the mobile robot using 2D Lidar scanning 360 degree and IMU?

I would like to get the absolute pose of the mobile robot using 2D Lidar scanning 360 degree and IMU. I would to develop algorithm to estimate the lateral position and heading angle of the robot. So the algorithm will includes following…
Bob9710
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mediapipePose for single landmark not working

I want to place an selected image on left and right ear using media pose in react Js .But single landmark is not showing .I don't know what's the problem in my code . draw Landmarks(canvasCtx, results.poseLandmarks,…
Rimsha Riaz
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Is there a way to use opencv's estimatePoseSingleMarkers on NVIDIA GPU?

I am trying to estimate pose of a Aruco Marker using opencv library. But the performance of the above Library is a bit slow since it runs on CPU.Is there a way so that I can run the above Library on GPU? . I tried researching in OpenCV's…
Luffy
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How to extract skeleton only without video in mediapipe?

import cv2 import mediapipe as mp import numpy as np import sys mp_drawing = mp.solutions.drawing_utils mp_pose = mp.solutions.pose mp_drawing_styles = mp.solutions.drawing_styles #min_Tracking_confidence = 1 for higher accuracy pose =…
wofks63
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