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Questions tagged [pose-estimation]

The specific task of determining the position and orientation of an object in an image relative to the camera coordinates is called Pose Estimation.

The pose of a camera is also known as the camera Extrinsic Parameters. It is a 3x4 matrix where the first 3 columns are the rotation (orientation) and the las column is the translation (position).

Camera Pose matrix. Rotation and Translation

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Head Pose Estimation with 2 cameras

I am working on head pose estimation project using 2 cameras. For one camera system works and returns rotation matrix and translation vector of a head with respect to each camera coordinate system. I have rendered object in OpenGL scene which is…
Karmar
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Getting x,y in 3d coordinate system from 2d image pixel

Using camera with fixed position I have to track an object in motion and to localize it in some pre chosen coordinate system. Idea is to put a specific color marker on the top of the object with known height, so the Z coordinate will be known. After…
Banana
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c++ get camera position in world coordinates (opencv)

Ok solved it. first I gonna use a Matlab tool and the chessboardthingie to get the intrinsic parameters. And the i ll use cv::solvePnP() Yeah I used the search but unforunately it didnt help me alot. As the title says I have to find the…
user1227994
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Pose estimation of 3D object and 2D picture, but it's X-ray volumetric data (DRR of CT/MRI)

How can I localize 2D projections in (dense, transparent) 3D volumes? I seem to only find algorithms that work on datasets with non-transparent surfaces. Those algorithms rely on geometric assumptions that do not hold true in DVR environments (with…
lematthias
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PoseModule.py Method detector.findAngle ValueError: too many values to unpack (expected 2)

i have a problem using PoseModule in Pose Estimation app while True: img = detector.findPose(img) lmList = detector.findPosition(img, False) if len(lmList) != 0: detector.findAngle(img, 11, 13, 15) And i have this message: --->…
leo_nidas300
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YOLO V8 save results custom file name

I want to save the results the prediction of Yolo v8. I know how so set the path or project/name but I don't want just any file name, e.g. "image0.jpg". I want to specify the file name to something like "custom-name.jpg". I want to iteratively…
foxychev
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Mapping 3d coordinates with unity's human like avatar breaks the character

I'm using python's media pipe library and webcam to track pose. The obtained pose landmarks is transferred to its unity clients. The data is of JSON form and its structure is { keypoint_number:{ "x": (some value…
Aaditya Prabu K
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Calculation of world coordinates of camera from chessboard image

I have a stationary camera and want to get the real world coordinates and rotation from my camera (relative to the pattern). I placed a checkerboard pattern in the FoV of the camera and took some images. Some might say, this question already has an…
Sheradil
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Triangulated points are shifted and rotated but reasonable otherwise

I have two different views of a football game, I use a 2d pose estimator on both views to get 2d poses and then I map the different 2d poses(currently by hand) in the two different cameras such that I know the corresponding poses. I think the 3d…
emil holmberg
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Minimize pose estimation inaccuracy with ChArUco board; what is the influence of gamma compression?

In researching ways to minimize pose estimation inaccuracies, I found this Stack Overflow answer which suggests that gamma-compression could be one factor to consider. My question is: what is the best way to avoid this? I am using an industrial…
sg65
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Object Pose solvePnP

Unable to get object Pose and draw axis with 4 markers I am trying to get the object pose by following This tutorial for Pose Estimation. In the video the author uses chessboard pattern(24,17) and mentions in the comment that any object with…
AqibF
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How to get the transformation between two body frames in PyDrake

I have two frames at different joint locations of IIWA arm, using f1 = plant.GetFrameByName("iiwa_link_0", kuka_model) f2 = plant.GetFrameByName("iiwa_link_2", kuka_model) I want to find the transformation between these two body frames(f1,…
Sarvesh Thakur
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Bug in ARKit 3D Motion Body Motion Capture

This sample code for 3D motion capture has a bug in it. The feet ankles and feet of virtual object do not overlay accurately on the person. The feet always face downwards, refer to the attached image. Any thoughts on how it can be fixed?
Hamza Mahmood
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How to get camera pose (camera extrinsic) for a set of images in absolute units using opencv?

I'm trying to measure objects with sparse reconstruction cloud map in COLMAP. Without inputting camera poses (translation and rotation matrix as quaternion) for images in meters, I will not be able to make any measurements from sparse model after…
Kiran George
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Detect Enclosed ArUco Marker Python

I am trying to use the Enclosed ArUco Marker in Python but it cannot be detected. Is there an implimentation of this ArUco Marker detection in python and how do i use it ? The reason why I want to use markers with with the enclosed corners is…
William Hoole
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