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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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Building wheel for neural-renderer-pytorch (setup.py) ...installing multiperson and neural mesh renderer doesn't work for pytorch 1.6

I am trying to install a github repo named multiperson for PyTorch 1.6 and I get the following error. How can I make it work for PyTorch 1.6? (base) mona@mona:~/research$ cd phosa/ (base) mona@mona:~/research/phosa$ mkdir -p external (base)…
Mona Jalal
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OpenCV: Projecting 3D points from Homography Matrix

I am trying to project points on an image after estimating its pose as shown in this OpenCV tutorial, but for any textured "base image" instead of a chessboard image. To match the base image with a frame from my webcam, I'm using ORB and FLANN and…
nickh
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How can I access other files in the same Docker container?

I'm new to Docker. When I am running my docker container, the last line in the Dockerfile is the following: CMD ["python3", "./poses/server/server_multithreaded.py"] In the server_multithreaded.py file described above, I am importing another file,…
zoheezus
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How does Elevation of a Head Pose in Python-OpenCV work?

I am trying to estimate the head pose of single images mostly following this guide: https://towardsdatascience.com/real-time-head-pose-estimation-in-python-e52db1bc606a The detection of the face works fine - if i plot the image and the detected…
Ole Bialas
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How to calculate Angle of a square object with respect to image in 2D plane using camera?

I have captured an image using a webcam, attached upside-down above a table horizontally. On the table, I have a square object or piece of card. I have successfully detected the object and found its center coordinates (centroid). Now I want to find…
Tehseen
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How much ground truth error does the KITTI dataset have?

I visualized KITTI odometry dataset with ground truth and Velodyne point cloud data. http://www.cvlibs.net/datasets/kitti/eval_odometry.php The height of the camera position seems different after the loop in the sequence. I am not sure this is…
Masahiro
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I am trying to use cv2.projectPoints() but I am getting an error

This is the error: imgpts, jac = cv2.projectPoints(axis, rvecs, tvecs, mtx, dist) cv2.error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\calib3d\src\calibration.cpp:603: error: (-5:Bad argument) Rotation must be represented by 1x3 or 3x1…
liad inon
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Aruco markers pose estimation opencv for moving objects

I am trying to track an object in space. For the same, I have stuck an AruCo marker on the object. Due to the dimensions of the object, the marker is fairly small, with a size of 4.5cm x 4.5 cm. The camera is roughly about 50cm away from the marker…
OlorinIstari
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Estimate camera pose from 3 points with OpenCV

I have a straightforward (I guess) problem to solve with opencv: I have 3 non-colinear Points in the 3D system given in cm: Point A = Point(.., .., ..); Point B = Point(.., .., ..); Point C = Point(.., .., ..); I have the respective 2D Points…
Duloren
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Storing indexes of each object into 2D list

print(humans) for human in humans: pose_2d_mpii, visibility = common.MPIIPart.from_coco(human) pose_2d_mpiis.append([(int(x * standard_w + 0.5), int(y * standard_h + 0.5)) for x, y in pose_2d_mpii]) visibilities.append(visibility) #…
Brandon Speedster Loo
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OpenCV - Correctly recovering the pose and landmark positions from 2d image points

I'm trying to do 3D scene reconstruction and camera pose estimation on video input, however the camera positions are not matching what I am seeing in the video. Here is the code I wrote to recover the pose and landmark positions def SfM(self,…
Brad1141
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Head Pose Estimation

OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\videoio\src\cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file): head_pose_poc.webm in function 'cv::icvExtractPattern' [ERROR -…
Anamta Irfan
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What is meant by regressing convolutional features to a quaternion representation of Rotation?

I'm interested in Robot Manipulation, I was reading the paper "PoseCNN: A Convolutional Neural Network for 6D Object Pose Estimation in Cluttered Scenes" and found the following sentence in the introduction section where it explains the three…
ML Dev
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How to generate skeleton view using human pose estimation?

I am trying to use human pose estimation through keras implementation. I am using this source https://github.com/michalfaber/keras_Realtime_Multi-Person_Pose_Estimation. My problem is how can I generate the skeleton view of the following image, the…
ashish14
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How to align images of a known object with a 3D model of that object using opencv?

I have a CAD model of an object in Blender software. And I had printed it out and took some photos of it. I need to use the Blender software to render some synthetic images of the object. My task is to create rendered images as similar as possible…
wangmyde
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