function?featureVector?=?gaborFeatures（imggaborArrayd1d2）

%?GABORFEATURES?extracts?the?Gabor?features?of?the?image.
%?It?creates?a?column?vector?consisting?of?the?image‘s?Gabor?features.
%?The?feature?vectors?are?normalized?to?zero?mean?and?unit?variance.
%
%
%?Inputs:
%???????img?????????:	Matrix?of?the?input?image?
%???????gaborArray	:	Gabor?filters?bank?created?by?the?function?gaborFilterBank
%???????d1??????????:	The?factor?of?downsampling?along?rows.
%???????????????????????d1?must?be?a?factor?of?n?if?n?is?the?number?of?rows?in?img.
%???????d2??????????:	The?factor?of?downsampling?along?columns.
%???????????????????????d2?must?be?a?factor?of?m?if?m?is?the?number?of?columns?in?img.
%???????????????
%?Output:
%???????featureVector	:???A?column?vector?with?length?（m*n*u*v）/（d1*d2）.?
%???????????????????????????This?vector?is?the?Gabor?feature?vector?of?an?
%???????????????????????????m?by?n?image.?u?is?the?number?of?scales?and
%???????????????????????????v?is?the?number?of?orientations?in?‘gaborArray‘.
%
%
%?Sample?use:
%?
%?img?=?imread（‘cameraman.tif‘）;
%?gaborArray?=?gaborFilterBank（583939）;??%?Generates?the?Gabor?filter?bank
%?featureVector?=?gaborFeatures（imggaborArray44）;???%?Extracts?Gabor?feature?vector?‘featureVector‘?from?the?image?‘img‘.
%?
%?
%???Details?can?be?found?in:
%???
%???M.?Haghighat?S.?Zonouz?M.?Abdel-Mottaleb?“Identification?Using?
%???Encrypted?Biometrics“?Computer?Analysis?of?Images?and?Patterns?
%???Springer?Berlin?Heidelberg?pp.?440-448?2013.
%?
%?
%?（C）	Mohammad?Haghighat?University?of?Miami
%???????haghighat@ieee.org
%???????I?WILL?APPRECIATE?IF?YOU?CITE?OUR?PAPER?IN?YOUR?WORK.


if?（nargin?~=?4）????%?Check?correct?number?of?arguments
????error（‘Use?correct?number?of?input?arguments!‘）
end

if?size（img3）?==?3?%?Check?if?the?input?image?is?grayscale
????img?=?rgb2gray（img）;
end

img?=?double（img）;


%%?Filtering

%?Filter?input?image?by?each?Gabor?filter
[uv]?=?size（gaborArray）;
gaborResult?=?cell（uv）;
for?i?=?1:u
????for?j?=?1:v
????????gaborResult{ij}?=?conv2（imggaborArray{ij}‘same‘）;
????????%?J{uv}?=?filter2（G{uv}I）;
????end
end


%%?Feature?Extraction

%?Extract?feature?vector?from?input?image
[nm]?=?size（img）;
s?=?（n*m）/（d1*d2）;
l?=?s*u*v;
featureVector?=?zeros（l1）;
c?=?0;
for?i?=?1:u
????for?j?=?1:v
????????
????????c?=?c+1;
????????gaborAbs?=?abs（gaborResult{ij}）;
????????gaborAbs?=?downsample（gaborAbsd1）;
????????gaborAbs?=?downsample（gaborAbs.‘d2）;
????????gaborAbs?=?reshape（gaborAbs.‘[]1）;
????????
????????%?Normalized?to?zero?mean?and?unit?variance.?（if?not?applicable?please?comment?this?line）
????????gaborAbs?=?（gaborAbs-mean（gaborAbs））/std（gaborAbs1）;
????????
????????featureVector（（（c-1）*s+1）:（c*s））?=?gaborAbs;
????????
????end
end


%%?Show?filtered?images

%?%?Show?real?parts?of?Gabor-filtered?images
%?figure（‘Numbertitle‘‘Off‘‘Name‘‘Real?parts?of?Gabor?filters‘）;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????97397??2014-11-12?18:06??Gabor\GaborArray.jpg

?????文件???????3411??2014-11-12?18:06??Gabor\gaborFeatures.m

?????文件???????2509??2014-11-12?18:06??Gabor\gaborFilterBank.m

?????目錄??????????0??2015-03-23?20:42??Gabor

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

???????????????103317????????????????????4