An improved auto-focusing method based on down-sampling and regional contrast - Details

author：

Chen, J. (Chen, J..) ^[1] | Zheng, S.H. (Zheng, S.H..) ^[3] (Scholars：郑绍华) | Pan, L. (Pan, L..) ^[4] (Scholars：潘林) | Yu, L. (Yu, L..) ^[5] (Scholars：余轮)

Indexed by：

EI Scopus

Abstract：

In　previous　literature,　most　researches　about　auto-focusing　technique　for　the　whole　image　concentrate　on　the　image　definition　function　for　all　the　pixels　of　an　image　which　is　time-consuming.　This　paper　presents　an　improved　auto-focusing　method　based　on　regional　contrast　and　down-sampling　after　analyzing　the　different　image　definition　functions.　Experimental　results　prove　that　the　downsampling　scheme　is　feasible,　universal,　and　time-saving,　and　the　proposed　method　outperforms　the　other　method.　©　2014　WIT　Press.

Keyword：

Focusing Signal sampling

Community：

[ 1 ] [Chen, J.]School of Information Science and Engineering, Fujian University of Technology, China
[ 2 ] [Chen, J.]Research Academy of Digital Media, Fuzhou University, China
[ 3 ] [Zheng, S.H.]Research Academy of Digital Media, Fuzhou University, China
[ 4 ] [Pan, L.]Research Academy of Digital Media, Fuzhou University, China
[ 5 ] [Yu, L.]Research Academy of Digital Media, Fuzhou University, China

Reprint 's Address：

陈健
[chen, j.]school of information science and engineering, fujian university of technology, china;;[chen, j.]research academy of digital media, fuzhou university, china

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