%??CORRESPONDENCE?INFORMATION
%??This?code?is?written?by?Gaofeng?MENG?
%
%??Gaofeng?MENG:??
%??National?Laboratory?of?Pattern?Recognition
%??Institute?of?Automation?Academy?of?Sciences?Beijing?100190
%??Comments?and?bug?reports?are?welcome.??Email?to?gfmeng@nlpr.ia.ac.cn
%
%??WORK?SETTING:
%??This?code?has?been?compiled?and?tested?by?using?MATLAB?R2009a
%
%??For?more?detials?please?see?our?paper:
%??Gaofeng?MENG?Ying?WANG?Jiangyong?DUAN?Shiming?XIANG?Chunhong?PAN.?
%??Efficient?Image?Dehazing?with?Boundary?Constraint?and?Contextual?Regularization?
%??ICCV?Sydney?Australia?pp.617-624?3-6?Dec.?2013.
%
%??Last?Modified:?Feb.?14?2014?By?Gaofeng?MENG
%??

function?A?=?Airlight（HazeImg?method?wsz）
%?estimating?the?global?airlight
%
if?strcmp（method?‘manual‘）
????h?=?figure?imshow（HazeImg?[]）;?
????title（‘manual?airlight?estimation:?left?click?to?pick?a?most?hazy?pixel.?‘）
????[x?y]?=?ginput（1）;
????A?=?HazeImg（round（y）?round（x）?:）;
????A?=?double（A）?-1;
????A?=?min（A?255）;
????close（h）;
elseif?strcmp（method?‘he‘）
????A?=?airlight_he（HazeImg?wsz）;????
elseif?strcmp（method?‘our‘）
????A?=?airlight_our（HazeImg?wsz）;
else
????error（‘parameter?error.‘）;
end

%%?
function?A?=?airlight_our（HazeImg?wsz）
%?estimating?A?channel?by?channel?separately
for?k?=?1?:?3
????minImg?=?ordfilt2（double（HazeImg（:?:?k））?1?ones（wsz）?‘symmetric‘）;
????A（k）?=?max（minImg（:））;
end

%%
function?A?=?airlight_he（HazeImg?wsz）
%?estimating?A?using?He‘s?method
hsv?=?rgb2hsv（HazeImg）;
GrayImg?=?hsv（:?:?3）;
[nRows?nCols?bt]?=?size（HazeImg）;

%?computing?dark?channel
DarkImg?=?min（double（HazeImg）?[]?3）;
DarkImg?=?ordfilt2（DarkImg?1?ones（wsz）?‘symmetric‘）;
%?
topDark?=?sort（DarkImg（:）?‘descend‘）;
idx?=?round（0.001?*?length（topDark））;
val?=?topDark（idx）;?
id_set?=?find（DarkImg?>=?val）;??%?the?top?0.1%?brightest?pixels?in?the?dark?channel
BrightPxls?=?GrayImg（id_set）;
iBright?=?find（BrightPxls?>=?max（BrightPxls））;
id?=?id_set（iBright）;?id?=?id（1）;
row?=?mod（id?nRows）;
col?=?floor（id?/?nRows）?+?1;

%?A?is?a?vector
A?=?HazeImg（row?col?:）;
A?=?double（A（:））;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2165??2014-02-17?09:51??dehaze_code\Airlight.m

?????文件???????1469??2014-02-17?09:51??dehaze_code\Boundcon.m

?????文件???????2913??2014-02-17?09:51??dehaze_code\CalTransmission.m

?????文件????1375311??2014-12-16?12:48??dehaze_code\dehaze.pdf

?????文件???????1185??2014-02-17?09:51??dehaze_code\Dehazefun.m

?????文件???????1524??2015-04-10?11:00??dehaze_code\demo.m

?????文件?????199545??2011-08-19?14:08??dehaze_code\examples\sam_1.bmp

?????目錄??????????0??2015-06-02?21:11??dehaze_code\examples

?????目錄??????????0??2015-01-08?20:42??dehaze_code

-----------?---------??----------?-----??----

??????????????1584112????????????????????9