%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?function?shadowSegmentFeatures?=?computeShadowSegmentFeatures（img?seg?varargin）
%??Computes?features?on?the?segments?（superpixels）?of?the?image?（used?only?for?the?CRF）.
%
%?Input?parameters:
%??-?img:?input?image
%??-?seg:?image?segmentation
%
%?Output?parameters:
%??-?shadowSegmentFeatures:?segment?features
%
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function?shadowSegmentFeatures?=?computeShadowSegmentFeatures（img?seg?varargin）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?Copyright?2006-2010?Jean-Francois?Lalonde
%?Carnegie?Mellon?University
%?Consult?the?LICENSE.txt?file?for?licensing?information
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


%%?Parse?arguments
defaultArgs?=?struct（‘Verbose‘?0?‘InvRespFunction‘?[]?...
????‘RGBHist‘?0?‘HistNbBins‘?4?‘Normalize‘?0?‘Equalize‘?0）;
args?=?parseargs（defaultArgs?varargin{:}）;

shadowSegmentFeatures?=?[];
tic;

%%?Correct?image?for?inverse?response?function
if?~isempty（args.InvRespFunction）
????myfprintf（args.Verbose?‘Applying?inverse?response?function...‘）;
????img?=?correctImage（img?args.InvRespFunction）;
end
imgPx?=?reshape（img?size（img1）*size（img2）?size（img3））;

segId?=?1:max（seg（:））;
segIdToPxId?=?arrayfun（@（x）?find（seg==x）?segId?‘UniformOutput‘?0）;

%%?Compute?RGB?histogram
if?args.RGBHist
????myfprintf（args.Verbose?‘Computing?RGB?histogram...‘）;
????histEdges?=?linspace（0?1?args.HistNbBins+1）;?histEdges（end）?=?histEdges（end）+eps;
????histImg?=?cellfun（@（x）?histc（imgPx（x:）?histEdges?1）?segIdToPxId?‘UniformOutput‘?0）;
????histImg?=?cat（3?histImg{:}）;
????
????%?drop?last?dimension
????histImg?=?histImg（1:end-1?:?:）;
????
????%?normalize
????histImg?=?histImg./repmat（sum（histImg?1）?[size（histImg?1）?1?1]）;
????
????%?reshape:?[R1?G1?B1?R2?G2?B2?...]
????shadowSegmentFeatures.RGBHist.hist?=?reshape（permute（histImg?[3?2?1]）?size（histImg?3）?size（histImg2）*size（histImg1））;
????
????%?compute?mean?as?well
????meanImg?=?cellfun（@（x）?mean（imgPx（x:）?1）?segIdToPxId?‘UniformOutput‘?0）;
????shadowSegmentFeatures.RGBHist.mean?=?cat（1?meanImg{:}）;
????
????if?args.Normalize
????????myfprintf（args.Verbose?‘Computing?normalized?features...‘）;
????????%?subtract?mean?divide?by?stdev
????????meanSegmentColor?=?mean（shadowSegmentFeatures.RGBHist.mean?1）;
????????stdSegmentColor?=?std（shadowSegmentFeatures.RGBHist.mean?1）;
????????
????????imgPxNew?=?imgPx?-?repmat（meanSegmentColor?size（imgPx?1）?1）;
????????imgPxNew?=?imgPxNew?./?repmat（stdSegmentColor?size（imgPx?1）?1）;
????????%?re-center?and?rescale?in?[01]?interval
????????imgPxNew?=?imgPxNew?+?0.5;
????????imgPxNew?=?（imgPxNew?-?min（imgPxNew（:）））?./?（max（imgPxNew（:））-min（imgPxNew（:）））;
????????imgNew?=?reshape（imgPxNew?size（img））;
????????
????????tmpFeatures?=?computeShadowSegmentFeatures（imgNew?segIdToPxId?‘RGBHist‘?1?‘Hist

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-05-24?03:11??DIP-PJ-master\
?????文件???????10244??2017-05-24?03:11??DIP-PJ-master\.DS_Store
?????文件??????????40??2017-05-24?03:11??DIP-PJ-master\README.md
?????文件????????3738??2017-05-24?03:11??DIP-PJ-master\computeShadowSegmentFeatures.m
?????文件?????????807??2017-05-24?03:11??DIP-PJ-master\convertBoundariesToPxInd.m
?????文件?????????713??2017-05-24?03:11??DIP-PJ-master\convertDataFile.m
?????目錄???????????0??2017-05-24?03:11??DIP-PJ-master\data\
?????文件????????6148??2017-05-24?03:11??DIP-PJ-master\data\.DS_Store
?????文件??????258480??2017-05-24?03:11??DIP-PJ-master\data\bdt-eccv10-with-statistics-toolbox.mat
?????文件??????468425??2017-05-24?03:11??DIP-PJ-master\data\bdt-eccv10.mat
?????文件??????111205??2017-05-24?03:11??DIP-PJ-master\data\filterBank.mat
?????目錄???????????0??2017-05-24?03:11??DIP-PJ-master\data\img\
?????文件??????204478??2017-05-24?03:11??DIP-PJ-master\data\img\img-groundProb.mat
?????文件???????97774??2017-05-24?03:11??DIP-PJ-master\data\img\img.jpg
?????文件???????47492??2017-05-24?03:11??DIP-PJ-master\data\univTextons_128.mat
?????文件????????3518??2017-05-24?03:11??DIP-PJ-master\demoShadowDetection.m
?????目錄???????????0??2017-05-24?03:11??DIP-PJ-master\display\
?????文件?????????727??2017-05-24?03:11??DIP-PJ-master\display\displayBoundaries.m
?????文件????????1124??2017-05-24?03:11??DIP-PJ-master\display\displayBoundariesProb.m
?????文件????????1656??2017-05-24?03:11??DIP-PJ-master\extractImageBoundaries.m
?????文件????????2298??2017-05-24?03:11??DIP-PJ-master\getBoundaryIndicesFromEdges.m
?????文件????????1767??2017-05-24?03:11??DIP-PJ-master\getPathName.m
?????文件?????????444??2017-05-24?03:11??DIP-PJ-master\grad2wseg.m
?????文件?????????814??2017-05-24?03:11??DIP-PJ-master\interpBoundarySubPixel.m
?????文件?????????304??2017-05-24?03:11??DIP-PJ-master\myfprintf.m
?????文件????????6292??2017-05-24?03:11??DIP-PJ-master\selectBoundaryFeatures.m
?????文件?????????444??2017-05-24?03:11??DIP-PJ-master\selectImageFeatures.m
?????文件?????????811??2017-05-24?03:11??DIP-PJ-master\setPath.m
?????文件????????6941??2017-05-24?03:11??DIP-PJ-master\shadow_removal.m
?????文件?????????131??2017-05-24?03:11??DIP-PJ-master\skewness.m