Accuracy Evaluation and Prediction of Single-Image Camera Calibration

Susumu Kikkawa, Fumio Okura, Daigo Muramatsu, Yasushi Yagi, Hideo Saito

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This paper proposes an application to statistically predict the accuracy of single-image geometric camera calibration that uses given 2D-3D correspondences. Deriving both camera intrinsics and extrinsics from correspondences between a single image and a 3D shape, is important for the scene analysis when the optical system of the camera is lost, such as in the analyses of traffic accidents. It is unclear whether the single-image calibration will be successful in practice, particularly when the number of 2D-3D correspondences is small, even if we could assign accurate correspondences by manual labor. To this end, we perform a systematic evaluation of the camera parameter accuracy using synthetic environments. Based on the statistics observed during the experiments, our application predicts the calibration accuracy from simple variables (e.g., the area that correspondences could be given). Since the prediction process does not rely on 3D shapes, it provides an estimate of the success of the calibration before time-consuming processes, i.e., 3D scanning and 2D-3D correspondence mapping.

Original languageEnglish
Pages (from-to)19312-19323
Number of pages12
JournalIEEE Access
Volume11
DOIs
Publication statusPublished - 2023

Keywords

  • Camera calibration
  • computer vision
  • traffic accident reconstruction

ASJC Scopus subject areas

  • General Computer Science
  • General Materials Science
  • General Engineering
  • Electrical and Electronic Engineering

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