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Title: An objective out-of-focus blur measurement
Authors: Shiqian, W.
Weisi, L.
Lijun, J.
Wei, X.
Lihao, C.
Sim, H.O. 
Keywords: Blur measurement
Edge detection
Lines spread function
Point spread function
Issue Date: 2005
Citation: Shiqian, W.,Weisi, L.,Lijun, J.,Wei, X.,Lihao, C.,Sim, H.O. (2005). An objective out-of-focus blur measurement. 2005 Fifth International Conference on Information, Communications and Signal Processing 2005 : 334-338. ScholarBank@NUS Repository.
Abstract: This paper presents a new method for objective measurement of out-of-focus blur images. The essential idea is to derive the point spread function (PSF) of an out-of-focus blur image from the line spread function (LSF). In this method, it is assumed that at least one sharp edge could be detected. Then, the LSF can be constructed from the edge(s). This approach has fast speed as it works in spatial domain without complex Fourier transform or iterative computation. Moreover, a generic criterion for out-of-focus blur measurement is proposed and it can be applied to all images without depending on image contents. The experimental results validate the accuracy and efficiency of the proposed method. © 2005 IEEE.
Source Title: 2005 Fifth International Conference on Information, Communications and Signal Processing
ISBN: 0780392833
Appears in Collections:Staff Publications

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