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We present a derivation for estimating the roll and pitch orientation of a partially calibrated camera mounted above a planar surface, using minimal scene information. Specifically, we assume known intrinsic parameters and a fixed height…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Gergely Dinya , Anna Gelencsér-Horváth

Pose estimation commonly refers to computer vision methods that recognize people's body postures in images or videos. With recent advancements in deep learning, we now have compelling models to tackle the problem in real-time. Since these…

Robotics · Computer Science 2021-07-07 Arash Amini , Hafez Farazi , Sven Behnke

Estimating relative camera poses between images has been a central problem in computer vision. Methods that find correspondences and solve for the fundamental matrix offer high precision in most cases. Conversely, methods predicting pose…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Chris Rockwell , Nilesh Kulkarni , Linyi Jin , Jeong Joon Park , Justin Johnson , David F. Fouhey

In this work, we present an algebraic solution to the classical perspective-3-point (P3P) problem for determining the position and attitude of a camera from observations of three known reference points. In contrast to previous approaches,…

Computer Vision and Pattern Recognition · Computer Science 2017-01-31 Tong Ke , Stergios Roumeliotis

Visual localization is the task of accurate camera pose estimation in a known scene. It is a key problem in computer vision and robotics, with applications including self-driving cars, Structure-from-Motion, SLAM, and Mixed Reality.…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Torsten Sattler , Qunjie Zhou , Marc Pollefeys , Laura Leal-Taixe

The proposed system outlined in this paper is a solution to a use case that requires the autonomous picking of cuboidal objects from an organized or unorganized pile with high precision. This paper presents an efficient method for precise…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Utsav Rai , Hardik Mehta , Vismay Vakharia , Aditya Choudhary , Amit Parmar , Rolif Lima , Kaushik Das

We present an approach for estimating the pose of an external camera with respect to a robot using a single RGB image of the robot. The image is processed by a deep neural network to detect 2D projections of keypoints (such as joints)…

In this paper we present a fast minimal solver for absolute camera pose estimation from four known points that lie in a plane. We assume a perspective camera model with unknown focal length and unknown radial distortion. The radial…

Computer Vision and Pattern Recognition · Computer Science 2018-06-07 Magnus Oskarsson

The $\mathrm{SE}(3)$ invariants of a pose include its rotation angle and screw translation. In this paper, we present a complete comprehensive study of the relative pose estimation problem for a calibrated camera constrained by known…

Robotics · Computer Science 2020-07-16 Bo Li , Evgeniy Martyushev , Gim Hee Lee

Robustly estimating camera poses from a set of images is a fundamental task which remains challenging for differentiable methods, especially in the case of small and sparse camera pose graphs. To overcome this challenge, we propose…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Matteo Taiana , Matteo Toso , Stuart James , Alessio Del Bue

Creating mobile robots which are able to find and manipulate objects in large environments is an active topic of research. These robots not only need to be capable of searching for specific objects but also to estimate their poses often…

Robotics · Computer Science 2022-03-09 Jascha Hellwig , Mark Baierl , Joao Carvalho , Julen Urain , Jan Peters

We propose a new method for estimating the relative pose between two images, where we jointly learn keypoint detection, description extraction, matching and robust pose estimation. While our architecture follows the traditional pipeline for…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Antoine Fond , Luca Del Pero , Nikola Sivacki , Marco Paladini

Relative pose estimation using point correspondences (PC) is a widely used technique. A minimal configuration of six PCs is required for two views of generalized cameras. In this paper, we present several minimal solvers that use six PCs to…

Computer Vision and Pattern Recognition · Computer Science 2024-11-14 Banglei Guan , Ji Zhao , Laurent Kneip

Determining the position and orientation of a calibrated camera from a single image with respect to a 3D model is an essential task for many applications. When 2D-3D correspondences can be obtained reliably, perspective-n-point solvers can…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Dylan Campbell , Lars Petersson , Laurent Kneip , Hongdong Li , Stephen Gould

In this paper we present four cases of minimal solutions for two-view relative pose estimation by exploiting the affine transformation between feature points and we demonstrate efficient solvers for these cases. It is shown, that under the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Banglei Guan , Ji Zhao , Zhang Li , Fang Sun , Friedrich Fraundorfer

Planar markers are useful in robotics and computer vision for mapping and localisation. Given a detected marker in an image, a frequent task is to estimate the 6DOF pose of the marker relative to the camera, which is an instance of planar…

Computer Vision and Pattern Recognition · Computer Science 2019-09-27 Shin-Fang Ch'ng , Naoya Sogi , Pulak Purkait , Tat-Jun Chin , Kazuhiro Fukui

We present a new mathematical formulation to estimate the intrinsic parameters of a camera in active or robotic platforms. We show that the focal lengths can be estimated using only one point correspondence that relates images taken before…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Mehdi Faraji , Anup Basu

We present a novel method to compute the relative pose of multi-camera systems using two affine correspondences (ACs). Existing solutions to the multi-camera relative pose estimation are either restricted to special cases of motion, have…

Computer Vision and Pattern Recognition · Computer Science 2023-06-23 Banglei Guan , Ji Zhao

This paper presents new efficient solutions to the rolling shutter camera absolute pose problem. Unlike the state-of-the-art polynomial solvers, we approach the problem using simple and fast linear solvers in an iterative scheme. We present…

Computer Vision and Pattern Recognition · Computer Science 2019-01-01 Zuzana Kukelova , Cenek Albl , Akihiro Sugimoto , Tomas Pajdla

Face alignment aims to estimate the locations of a set of landmarks for a given image. This problem has received much attention as evidenced by the recent advancement in both the methodology and performance. However, most of the existing…

Computer Vision and Pattern Recognition · Computer Science 2015-06-12 Amin Jourabloo , Xiaoming Liu