局所正方格子テストパターンの反復利用による広角中心窩画像の拡張的歪み除去手法

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2023/07/01

タイトル(英語): Extensional Distortion Removal of Wide Angle Fovea Image by Iteratively Applying Square Lattice Test Pattern

著者名: 高村　朋希（芝浦工業大学大学院理工学研究科），清水　創太（芝浦工業大学大学院理工学研究科）

著者名(英語): Tomoki Takamura (Graduate School of Engineering and Science, Shibaura Institute of Technology), Sota Shimizu (Graduate School of Engineering and Science, Shibaura Institute of Technology)

キーワード: 広角中心窩センサ，カメラキャリブレーション，反復的歪曲除去，拡張的補正ルックアップテーブル　　wide angle fovea sensor，camera calibration，iterative distortion correction，extensive correction lookup table

要約(英語): This paper proposes a method to remove high distortion from input images using a Wide Angle Fovea (WAF) sensor. The WAF sensor is specifically designed to acquire an input image with (1) wide-angle field of view (FOV) and (2) high resolution in the central FOV. The WAF sensor achieves this by distorting the input image. Furthermore, it is difficult to accurately to remove a distortion so high by applying conventional camera calibration methods such as the Zhang method. Therefore, we propose a novel distortion removal method that does not consider distortion coefficients for distortion correction. In the proposed method, the distortion is removed according to an extensive distortion correction lookup table. This method removes distortion from input images by wide-angle sensors using a local small test pattern and not a huge one. Although this implies that, inevitably, this method requires a much larger number of input images with a narrow FOV, it achieves processing complexity reduction for accurately mapping an undistorted image with a sufficiently wide angle. Accuracy evaluation experiments were conducted, and their results quantitatively proved that our proposed method performed effectively for distortion correction.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.143 No.7 （2023）

本誌掲載ページ: 531-538 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/143/7/143_531/_article/-char/ja/