IFS-based image geometry transform

Zhengbing Zhang; Xiaodong Xiong; Zhenhua Xia

doi:10.1117/12.755522

29 November 2007 IFS-based image geometry transform

Zhengbing Zhang, Xiaodong Xiong, Zhenhua Xia

Proceedings Volume 6833, Electronic Imaging and Multimedia Technology V; 683322 (2007) https://doi.org/10.1117/12.755522
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

In this paper, a method of IFS-based image geometry transform is proposed. Suppose the original image can be approximated with the attractor (denoted by A) of an Iterated Function System (IFS) consisting of N contractive mappings of w_n (n=1, 2, ..., N), whose coefficients have been determined by fractal encoding. G(A) is used to denote the geometry transform on the attractor A. The result is equivalent to make a corresponding geometry transform on the original image. It is demonstrated in the paper that G(A) is the attractor of a new iterated function system (denoted by IFS') derived from the mappings of w_n (n = 1, 2, ...N). In another word, we can modify the coefficients of w_n (n=1, ..., N) to construct the IFS', and the result by decoding IFS' is A' = G(A), which is the approximation of the expected geometry transform of the original image. In order to translate, rotate and dilate images in the domain of IFS coefficients, formulas to construct the IFS' from w_n are deduced in this paper. The experimental results have validated the proposed method.

Citation Download Citation

Zhengbing Zhang, Xiaodong Xiong, and Zhenhua Xia "IFS-based image geometry transform", Proc. SPIE 6833, Electronic Imaging and Multimedia Technology V, 683322 (29 November 2007); https://doi.org/10.1117/12.755522

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