function?imDst?=?boxfilter（imSrc?r）

%???BOXFILTER???O（1）?time?box?filtering?using?cumulative?sum
%
%???-?Definition?imDst（x?y）=sum（sum（imSrc（x-r:x+ry-r:y+r）））;
%???-?Running?time?independent?of?r;?
%???-?Equivalent?to?the?function:?colfilt（imSrc?[2*r+1?2*r+1]?‘sliding‘?@sum）;
%???-?But?much?faster.

[hei?wid]?=?size（imSrc）;
imDst?=?zeros（size（imSrc））;

%cumulative?sum?over?Y?axis
imCum?=?cumsum（imSrc?1）;
%difference?over?Y?axis
imDst（1:r+1?:）?=?imCum（1+r:2*r+1?:）;
imDst（r+2:hei-r?:）?=?imCum（2*r+2:hei?:）?-?imCum（1:hei-2*r-1?:）;
imDst（hei-r+1:hei?:）?=?repmat（imCum（hei?:）?[r?1]）?-?imCum（hei-2*r:hei-r-1?:）;

%cumulative?sum?over?X?axis
imCum?=?cumsum（imDst?2）;
%difference?over?Y?axis
imDst（:?1:r+1）?=?imCum（:?1+r:2*r+1）;
imDst（:?r+2:wid-r）?=?imCum（:?2*r+2:wid）?-?imCum（:?1:wid-2*r-1）;
imDst（:?wid-r+1:wid）?=?repmat（imCum（:?wid）?[1?r]）?-?imCum（:?wid-2*r:wid-r-1）;
end

?屬性????????????大小?????日期????時間???名稱
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?????文件????????927??2017-02-08?22:57??暗通道先驗+引導濾波去霧MATLAB代碼\boxfilter.m

?????文件?????135898??2017-02-08?23:03??暗通道先驗+引導濾波去霧MATLAB代碼\example_tree.jpg

?????文件???????1027??2017-02-08?22:56??暗通道先驗+引導濾波去霧MATLAB代碼\guidedfilter.m

?????文件???????2445??2017-02-08?22:56??暗通道先驗+引導濾波去霧MATLAB代碼\guidedfilter_color.m

?????文件???????1598??2017-08-11?16:48??暗通道先驗+引導濾波去霧MATLAB代碼\main.m

?????文件???????1845??2017-02-08?22:57??暗通道先驗+引導濾波去霧MATLAB代碼\maxfilt2.m

?????文件???????1845??2017-02-08?22:59??暗通道先驗+引導濾波去霧MATLAB代碼\minfilt2.m

?????文件???????1280??2018-02-11?11:32??暗通道先驗+引導濾波去霧MATLAB代碼\test.m

?????文件???????4841??2002-02-12?01:12??暗通道先驗+引導濾波去霧MATLAB代碼\vanherk.m

?????目錄??????????0??2018-02-12?18:58??暗通道先驗+引導濾波去霧MATLAB代碼

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???????????????151706????????????????????10