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資源簡(jiǎn)介

LBP算法,返回直方圖和特征點(diǎn)圖像,支持Uniform Pattern

資源截圖

代碼片段和文件信息

%LBP?returns?the?local?binary?pattern?image?or?LBP?histogram?of?an?image.
%??J?=?LBP(IRNMAPPINGMODE)?returns?either?a?local?binary?pattern
%??coded?image?or?the?local?binary?pattern?histogram?of?an?intensity
%??image?I.?The?LBP?codes?are?computed?using?N?sampling?points?on?a
%??circle?of?radius?R?and?using?mapping?table?defined?by?MAPPING.
%??See?the?getmapping?function?for?different?mappings?and?use?0?for
%??no?mapping.?Possible?values?for?MODE?are
%???????‘h‘?or?‘hist‘??to?get?a?histogram?of?LBP?codes
%???????‘nh‘???????????to?get?a?normalized?histogram
%??Otherwise?an?LBP?code?image?is?returned.
%
%??J?=?LBP(I)?returns?the?original?(basic)?LBP?histogram?of?image?I
%
%??J?=?LBP(ISPMAPPINGMODE)?computes?the?LBP?codes?using?n?sampling
%??points?defined?in?(n?*?2)?matrix?SP.?The?sampling?points?should?be
%??defined?around?the?origin?(coordinates?(00)).
%
%??Examples
%??--------
%???????I=imread(‘rice.png‘);
%???????mapping=getmapping(8‘u2‘);
%???????H1=LBP(I18mapping‘h‘);?%LBP?histogram?in?(81)?neighborhood
%??????????????????????????????????%using?uniform?patterns
%???????subplot(211)stem(H1);
%
%???????H2=LBP(I);
%???????subplot(212)stem(H2);
%
%???????SP=[-1?-1;?-1?0;?-1?1;?0?-1;?-0?1;?1?-1;?1?0;?1?1];
%???????I2=LBP(ISP0‘i‘);?%LBP?code?image?using?sampling?points?in?SP
%???????????????????????????%and?no?mapping.?Now?H2?is?equal?to?histogram
%???????????????????????????%of?I2.


function?result?=?lbp(varargin)?%?imageradiusneighborsmappingmode)
%?Version?0.3.2
%?Authors:?Marko?Heikkil?and?Timo?Ahonen


%?Changelog
%?Version?0.3.2:?A?bug?fix?to?enable?using?mappings?together?with?a
%?predefined?spoints?array
%?Version?0.3.1:?Changed?MAPPING?input?to?be?a?struct?containing?the?mapping
%?table?and?the?number?of?bins?to?make?the?function?run?faster?with?high?number
%?of?sampling?points.?Lauge?Sorensen?is?acknowledged?for?spotting?this?problem.




%?Check?number?of?input?arguments.
narginchk(15);
image=varargin{1};
d_image=double(image);


if?nargin==1
????spoints=[-1?-1;?-1?0;?-1?1;?0?-1;?-0?1;?1?-1;?1?0;?1?1];
????neighbors=8;
????mapping=0;
????mode=‘h‘;
end


if?(nargin?==?2)?&&?(length(varargin{2})?==?1)
????error(‘Input?arguments‘);
end


if?(nargin?>?2)?&&?(length(varargin{2})?==?1)
????radius=varargin{2};
????neighbors=varargin{3};
???
????spoints=zeros(neighbors2);


????%?Angle?step.
????a?=?2*pi/neighbors;
???
????for?i?=?1:neighbors
????????spoints(i1)?=?-radius*sin((i-1)*a);
????????spoints(i2)?=?radius*cos((i-1)*a);
????end
???
????if(nargin?>=?4)
????????mapping=varargin{4};
????????if(isstruct(mapping)?&&?mapping.samples?~=?neighbors)
????????????error(‘Incompatible?mapping‘);
????????end
????else
????????mapping=0;
????end
???
????if(nargin?>=?5)
????????mode=varargin{5};
????else
????????mode=‘h‘;
????end
end


if?(nargin?>?1)?&&?(length(varargin{2})?>?1)
????spoints=varargin{2};
????neighbors=size(

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????2093??2014-10-10?09:21??lbptest.m
?????文件????????6057??2014-10-09?13:38??lbp.m

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