Forward Implementation Algorithm of Log-polar Transformation

Author

Youyi, Jiang ; Yangan, Li ; Wang, Li

Author_Institution

Northwestern Polytech. Univ., Xi´´an

fYear

2007

Abstract

The log-polar transformation(LPT) is the main realized idea of variable spatial resolution vision system. But the realized algorithms are scarce. The forward implementation algorithm of LPT is proposed in the paper. The transformation is based on the determination of uniform image rings and spoke values. The distance and angular axis are dispersed respectively and the respective one-to-one mapping rings are obtained. Then the two mapping rings are unified. With the algorithm, the data quantity of result matrix is lowed and the fast transformation of image can be implemented. The standard Lena image is analyzed with the algorithm and results show the algorithm is validity.

Keywords

image resolution; forward implementation algorithm; log-polar transformation; one-to-one mapping rings; standard Lena image; uniform image rings; variable spatial resolution vision system; Algorithm design and analysis; Equations; Extraterrestrial measurements; Image analysis; Image resolution; Instruments; Machine vision; Pixel; Space technology; Spatial resolution; Log-polar; discretization; implemental algorithm; transformation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4244-1136-8

Electronic_ISBN

978-1-4244-1136-8

Type

conf

DOI

10.1109/ICEMI.2007.4350682

Filename

4350682