显著性检测GR算法--Matlab

论文题目：Graph-regularized Saliency Detection with Convex-hull-based Center Prior

% demo code for paper “Graph-regularized Saliency Detection with Convex-hull-based Center Prior“ 
% written by chuan yang
% email: ycscience86@gmail.com

clear all;
%% paramter
deltaw=0.05; %% controal edge weight 
spnumber=200;%% superpixels number
deltap=0.2;
deltax=0.15;
deltay=0.15;
lamda=25;
%convex hull paramter
sigma_g=1.5;
sigma_a=5;
nPoints=30;
%
imgRoot=‘./test/‘;%% test image dir
outdir=‘./saliencymaps/‘;%% the output saliency map saving dir
supdir=‘./superpixels200/‘;%% the superpixels files saving dir
mkdir（supdir）;
mkdir（outdir）;
imnames=dir（[imgRoot ‘*‘ ‘jpg‘]）;
addpath（‘./others/‘）;
addpath（‘./ColorFeatures/‘）;
for ii=1:length（imnames）;
  
    ii
    imname=[imgRoot imnames（ii）.name]; 
    input_im=imread（imname）; 
    outname=[imgRoot imnames（ii）.name（1:end-4） ‘.bmp‘];
    imwrite（input_imoutname）;
    input_im=im2double（input_im）;
    [mnz] = size（input_im）;
    
%% generate superpixels
    comm=[‘SLICSuperpixelSegmentation‘ ‘ ‘ outname ‘ ‘ int2str（20） ‘ ‘ int2str（spnumber） ‘ ‘ supdir];
    system（comm）;    
    spname=[supdir imnames（ii）.name（1:end-4）  ‘.dat‘];
    superpixels=ReadDAT（[mn]spname）;
    spnum=max（max（superpixels））;   
  
%% initial saliency map
    % compute convex hull
    Mboost = BoostMatrix（input_im）;
    boost_im= BoostImage（input_imMboost）;
    [EnIm]= ColorHarris（boost_imsigma_gsigma_a0.041）;
    [x_maxy_maxcorner_im2num_max]=getmaxpoints（EnImnPoints）;

    [xy]=find（corner_im2>0）;
    point=[xy];
    point=point（point（:1）>20:）;
    point=point（point（:1）    point=point（point（:2）>20:）;
    point=point（point（:2）    x=point（:1）;
    y=point（:2）;
    dis=zeros（length（x）1）;
    for i=1:length（x）
        dis（i）=0;
        for j=1:length（x）
            dis（i）=dis（i）+sqrt（（x（i）-x（j））^2+（y（i）-y（j））^2）;
        end
        dis（i）=dis（i）/length（x）;
    end
    [mdmind]=sort（dis）;clear dis;
    point=point（mind（1:length（x）-2）:）;
    dt = DelaunayTri（point（:2）point（:1））;
    k = convexHull（dt）;
    [XY] = meshgrid（1:n1:m）;
    Xl=reshape（X[m*n1]）;
    Yl=reshape（Y[m*n1]）;
    sI=pointLocation（dtXlYl）;
    mask = ~isnan（sI）;    
    mask=reshape（maskmn）; 
 
    % compute convex-hull-based center 
    STATS = regionprops（mask‘Centroid‘）;
    center（2） = STATS（length（STATS））.Centroid（1）;
    center（1）=STATS（length（STATS））.Centroid（2）;
    center（1）=center（1）/m;
    center（2）=center（2）/n;
    
    % convex-hull-based center prior  
    inds=cell（spnum1）;
    input_vals=reshape（input_im m*n z）;
    rgb_img=zeros（spnum13）;
    location_vals=zeros（spnum2）;
    sup_center_prior=zeros（spnum1）;
    for i=1:spnum
        inds{i}=find（superpixels==i）;
        rgb_img（i1:）=mean（input_vals（inds{i}:）1）;
        [mmnn]=ind2sub（size（superpixels）inds{i}）;
        location_vals（i1）=mean（mm/m）;
        location_vals（i2）=mean（nn/n）;
        sup_center_prior（i）=exp（-（（location_vals（i1）-center（1））^2/（2*deltax）+（location_vals（i2）-center（2））^2/（2*deltay）））;
    end  

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-05-29 17:57  GR\
     目录           0  2018-05-29 16:42  GR\ColorFeatures\
     文件         399  2016-01-07 07:59  GR\ColorFeatures\BoostImage.m
     文件        2809  2016-01-07 07:59  GR\ColorFeatures\BoostMatrix.m
     文件        1724  2016-01-07 07:59  GR\ColorFeatures\ColorHarris.m
     文件        1093  2016-01-07 07:59  GR\ColorFeatures\ColorStructureTensor.m
     文件         390  2016-01-07 07:59  GR\ColorFeatures\ColorStructureTensor2.m
     文件        1713  2016-01-07 07:59  GR\ColorFeatures\HSI_der.m
     文件         242  2016-01-07 07:59  GR\ColorFeatures\O2RGB.m
     文件         430  2016-01-07 07:59  GR\ColorFeatures\RGB2O.m
     文件         103  2016-01-07 07:59  GR\ColorFeatures\RGB2luminance.m
     文件        1724  2016-01-07 07:59  GR\ColorFeatures\canny.m
     文件        3139  2016-01-07 07:59  GR\ColorFeatures\color_canny.m
     文件         338  2016-01-07 07:59  GR\ColorFeatures\color_gradient.m
     文件        2047  2016-01-07 07:59  GR\ColorFeatures\demo_color_canny.m
     文件        2276  2016-01-07 07:59  GR\ColorFeatures\demo_color_harris.m
     文件        2014  2016-01-07 07:59  GR\ColorFeatures\demo_quasi_invariant_edges.m
     文件         303  2016-01-07 07:59  GR\ColorFeatures\dilation33.m
     文件        1112  2016-01-07 07:59  GR\ColorFeatures\fill_border.m
     文件         974  2016-01-07 07:59  GR\ColorFeatures\gDer.m
     文件         722  2016-01-07 07:59  GR\ColorFeatures\getmaxpoints.m
     文件         102  2016-01-07 07:59  GR\ColorFeatures\make_image.m
     文件        1247  2016-01-07 07:59  GR\ColorFeatures\opponent_der.m
     文件        1887  2016-01-07 07:59  GR\ColorFeatures\spherical_der.m
     文件        3143  2016-01-07 07:59  GR\ColorFeatures\star_sym_color.m
     文件         327  2016-01-07 07:59  GR\ColorFeatures\visualize_corners.m
     文件        3696  2016-01-07 07:59  GR\GetGR.m
     文件        1133  2016-01-07 07:59  GR\README.md
     文件      192512  2016-01-07 07:59  GR\SLICSuperpixelSegmentation.exe
     文件         720  2016-01-07 07:59  GR\SlicSupPixel.m
     文件        4280  2016-01-07 07:59  GR\demo.m
............此处省略28个文件信息