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A Minimal Solution for Image-Based Sphere Estimation

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Main Authors: Tekla, Tóth, Levente, Hajder
Format: Book
Language:English
Published: Springer 2023
Subjects:
Image-Based Sphere Estimation
Online Access:https://link.springer.com/article/10.1007/s11263-023-01766-1
https://dlib.phenikaa-uni.edu.vn/handle/PNK/8244
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spelling oai:localhost:PNK-82442023-04-24T06:55:26Z A Minimal Solution for Image-Based Sphere Estimation Tekla, Tóth Levente, Hajder Image-Based Sphere Estimation CC BY We propose a novel minimal solver for sphere fitting via its 2D central projection, i.e., a special ellipse. The input of the presented algorithm consists of contour points detected in a camera image. General ellipse fitting problems require five contour points. However, taking advantage of the isotropic spherical target, three points are enough to define the tangent cone parameters of the sphere. This yields the sought ellipse parameters. Similarly, the sphere center can be estimated from the cone if the radius is known. These proposed geometric methods are rapid, numerically stable, and easy to implement. Experimental results—on synthetic, photorealistic, and real images—showcase the superiority of the proposed solutions to the state-of-the-art methods. A real-world LiDAR-camera calibration application justifies the utility of the sphere-based approach resulting in an error below a few centimeters. 2023-04-24T06:55:26Z 2023-04-24T06:55:26Z 2023 Book https://link.springer.com/article/10.1007/s11263-023-01766-1 https://dlib.phenikaa-uni.edu.vn/handle/PNK/8244 en application/pdf Springer
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic Image-Based Sphere Estimation
spellingShingle Image-Based Sphere Estimation
Tekla, Tóth
Levente, Hajder
A Minimal Solution for Image-Based Sphere Estimation
description CC BY
format Book
author Tekla, Tóth
Levente, Hajder
author_facet Tekla, Tóth
Levente, Hajder
author_sort Tekla, Tóth
title A Minimal Solution for Image-Based Sphere Estimation
title_short A Minimal Solution for Image-Based Sphere Estimation
title_full A Minimal Solution for Image-Based Sphere Estimation
title_fullStr A Minimal Solution for Image-Based Sphere Estimation
title_full_unstemmed A Minimal Solution for Image-Based Sphere Estimation
title_sort minimal solution for image-based sphere estimation
publisher Springer
publishDate 2023
url https://link.springer.com/article/10.1007/s11263-023-01766-1
https://dlib.phenikaa-uni.edu.vn/handle/PNK/8244
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score 8.891053

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