Interpolatory edge detection

• Autorzy: Zeng P. F. , Hirata T.
• Języki publikacji: EN

Abstrakty

EN

Conventional edge operators cannot detect fine edges or edges in low-resolution images in a satisfactory way. In this paper, an interpolatory edge operator is proposed to deal with fine edge detection as a supplement. Fast image expansion is implemented by means of B-spline imterpolation. Edges are determined by seeking pixels with a local maximum of first derivative modulus (modulus maximum). The first derivatives can be calculed quickly by translation and substration along x and y directions if images interpolated by B-splines. Experimental results imply that the proposed interpolatory edge operator can satisfactorily solve the fine edge detection problem in cases when coventional edge operators fail to produce a clear output. Satisfacory results can be obtained when images are interpolated with the expansion rate of three.

Słowa kluczowe

EN

B-spline; image interpolation; edge detection

• Wydawca: Institute of Information Technology of the Warsaw University of Life Sciences – SGGW
• Czasopismo: Machine Graphics and Vision
• Rocznik: 2001
• Tom: Vol. 10, No. 2
• Strony: 175--184
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Zeng P. F.

autor

Hirata T.

• School of Engineering, Nagoya University