期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2016
卷号：84
期号：1
出版社：Journal of Theoretical and Applied
摘要：T A novel approach is proposed to restore the defocus image with the linear change defocus radius. Firstly, by studying the space-invariant defocus blurring model, the space-variant defocus blurring model with the linear change defocus radius is obtained. Then, a nonlinear coordinate transforms for blurred image is used to convert the space-variant images blurring into space-invariant blurring images, which is easier restored. The experimental results demonstrate the restoration image has more details and fewer ringing. The restoration effect of the proposed method reveals its practicability in the space-variant defocus image restoration.
