書誌事項
- タイトル別名
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- Subpixel Edge Extraction by Using Third Order Taylor Series Expansion and Correction with Curvature
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説明
This paper describes a new approach to sub-pixel edge localization by fitting a 3rd-order polynomial surface around each edge point using third order Taylor series expansion and correction with curvature.Sub-pixel edge location is then found as the zero-crossing of the second derivative along the gradient direction across the edge.The zero-crossing of the second derivative along the gradient direction has the same location as the peak of the first derivative.We further propose a new formula to correct the bias to curved edges based on the curvature.The experimental results show that sub-pixel location is unbiased against image noise in the case of straight edges and proposed method has high precision in both simulation images and real images.In the case of straight edges,accuracy of less than 1 twentieth of a pixel can be achieved.
収録刊行物
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- 精密工学会誌
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精密工学会誌 77 (8), 793-799, 2011
公益社団法人 精密工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204797506688
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- NII論文ID
- 130002122090
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- ISSN
- 1882675X
- 09120289
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
