Results 91 to 100 of about 1,576,564 (201)

A planar homography estimation method for camera calibration

open access: yes, 2003
More and more calibration methods are proposed based on planar homography. However, result accuracy of intrinsic parameters depends closely on homography estimation, which may be sensitive to noise. In this paper, a planar homography estimation method is
Tan DL(谈大龙)   +3 more
core  

Intelligent Sampling Consensus for Homography Estimation in Football Videos Using Featureless Unpaired Points

open access: yesIEEE Access
Estimating the homography matrix between images captured under radically different camera poses and zoom factors is a complex challenge. Traditional methods rely on the Random Sample Consensus (RANSAC) algorithm, which requires pairs of homologous points,
George Nousias   +2 more
doaj   +1 more source

An improved RANSAC algorithm for 3D wheel alignment

open access: yesJournal of Measurement Science and Instrumentation, 2022
Aiming at the defects of traditional four-wheel aligner such as many sensors, complex operation and slow detection speed, a fast and accurate 3D four-wheel alignment detection method is studied.
CHENG Wei   +5 more
doaj  

Color Homography Color Correction [PDF]

open access: yes, 2016
Homographies -- a mathematical formalism for relating image points across different camera viewpoints -- are at the foundations of geometric methods in computer vision and are used in geometric camera calibration, image registration, and stereo vision ...
Fisher, Robert B.   +2 more
core   +3 more sources

An ASIFT-Based Local Registration Method for Satellite Imagery

open access: yesRemote Sensing, 2015
Imagery registration is a fundamental step, which greatly affects later processes in image mosaic, multi-spectral image fusion, digital surface modelling, etc., where the final solution needs blending of pixel information from more than one images. It is
Xiangjun Wang   +3 more
doaj   +1 more source

Four-wheel positioning homography matrix optimization algorithm based on minimum re-projection error

open access: yesJournal of Measurement Science and Instrumentation
A fast and accurate homography matrix method for four-wheel positioning detection was presented in the paper. Fewer sensors were required with simpler operation and faster detection.
YAN Hongjie   +3 more
doaj  

Comprehensive Evaluation of Multispectral Image Registration Strategies in Heterogenous Agriculture Environment

open access: yesJournal of Imaging
This article is focused on the comprehensive evaluation of alleyways to scale-invariant feature transform (SIFT) and random sample consensus (RANSAC) based multispectral (MS) image registration.
Shubham Rana   +6 more
doaj   +1 more source

Homography-Based Sampled-Data Visual Servoing

open access: yes
Classical position-based and image-based visual servoing methods suffer from some drawbacks, the former require a three-dimensional model of the observed scene and they are sensitive to camera calibration errors, the convergence of the latter cannot be ...
Costanzo M., Natale C., Maria G. D.
core   +1 more source

Perspective Transform Based YOLO With Weighted Intersect Fusion for Forecasting the Possession Sequence of the Live Football Game

open access: yesIEEE Access
With billions of fans, football is a rapidly expanding sport that has proven essential to many nations and their citizens in particular. Some of the difficulties and the key challenges are analyzed in the football game which includes: pitch analysis ...
J. Joshan Athanesious, S. Kiruthika
doaj   +1 more source

A Geometric-Nonlinear Optimization Algorithm for Solving Pose Matrices in Aircraft Visual Navigation

open access: yesJournal of Applied Mathematics
We propose a noniterative geometric dimensionality reduction algorithm for solving the pose estimation problem of an onboard camera in visual navigation.
Congwei Wu   +3 more
doaj   +1 more source

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