A study of focus metrics and their application to automated focusing of inline transmission holograms

被引：14
作者：
Burns, N. M. [1 ]
Watson, J. [1 ]
机构：
[1] Univ Aberdeen, Opt Res Grp, Aberdeen AB24 3UE, Scotland
来源：
IMAGING SCIENCE JOURNAL | 2011年 / 59卷 / 02期
关键词：
hologram; Tenengrad; entropy; variance; Brenner; Sobel;
D O I：
10.1179/174313111X12966579709313
中图分类号：
TB8 [摄影技术];
学科分类号：
0804 ;
摘要：
In this article, we will explore the use of several spatial-domain focus metrics frequently applied in non-coherent (classical) imaging systems, and evaluate their suitability for the automated numerical focusing of marine holograms such as those collected with eHoloCam, the underwater digital holographic camera developed at Aberdeen University. Metrics will be applied to a set of particle holograms chosen to represent a range of features within the three categories: opacity, edge roughness and distance from image sensor.
引用
收藏
页码：90 / 99
页数：10
相关论文
共 12 条
[1]  
Born M., 1980, Principles of Optics, V6th, P1
[2]  
Hariharan P., 1996, OPTICAL HOLOGRAPHY
[3]  
Pan G., 2001, P 4 INT S PART IM VE
[4]  
PECHPACHECO JL, 2000, IEEE T PATT RECOGN, V3, P3318
[5]  
PFITSCH DW, 2005, P MTS IEEE OCEANS 05, V1, P690
[6]  
Schnars U., 2005, DIGITAL HOLOGRAPHY
[7]   Underwater digital holography for studies of marine plankton [J].
Sun, H. ;
Benzie, P. W. ;
Burns, N. ;
Hendry, D. C. ;
Player, M. A. ;
Watson, J. .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2008, 366 (1871) :1789-1806
[8]   In-line digital video holography for the study of erosion processes in sediments [J].
Sun, H ;
Dong, H ;
Player, MA ;
Watson, J ;
Paterson, DM ;
Perkins, R .
MEASUREMENT SCIENCE AND TECHNOLOGY, 2002, 13 (10) :L7-L12
[9]  
VAQUERO JJ, 1997, J MICROSC-OXFORD, V188, P3
[10]  
Vikram C.S., 1992, PARTICLE FIELD HOLOG
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