快速引导滤波

何凯明的快速引导滤波，MATLAB代码，思路不错，值得研究一下

I1 = imread（‘C:\Users\me\Desktop\x\1.tiff‘）;
I1 = rgb2gray（I1）;
I2 = imread（‘C:\Users\me\Desktop\x\5.tiff‘）;
I2 = rgb2gray（I2）;


I1_boxfilter = boxfilter（I13）;

figure（）;
imshow（I1_boxfilter）;
%imshow（[I1I2]）;

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-03-07 08:25  fast-guided-filter\
     文件         222  2019-03-07 08:28  fast-guided-filter\AGM.m
     文件         931  2010-07-08 19:30  fast-guided-filter\boxfilter.m
     文件         797  2019-03-07 08:23  fast-guided-filter\example_enhancement.m
     文件         426  2015-05-02 22:02  fast-guided-filter\example_feathering.m
     文件         716  2015-05-02 22:01  fast-guided-filter\example_flash.m
     文件         407  2015-05-05 14:53  fast-guided-filter\example_smoothing.m
     文件        1300  2015-05-05 15:01  fast-guided-filter\fastguidedfilter.m
     文件        3092  2015-05-05 15:01  fast-guided-filter\fastguidedfilter_color.m
     文件         957  2010-07-08 21:57  fast-guided-filter\guidedfilter.m
     文件        2462  2011-05-03 04:12  fast-guided-filter\guidedfilter_color.m
     目录           0  2010-07-08 20:20  fast-guided-filter\img_enhancement\
     文件     2880056  2010-03-05 16:09  fast-guided-filter\img_enhancement\tulips.bmp
     目录           0  2010-07-08 21:11  fast-guided-filter\img_feathering\
     文件      947480  2010-07-08 22:24  fast-guided-filter\img_feathering\toy-mask.bmp
     文件      947480  2010-07-08 22:24  fast-guided-filter\img_feathering\toy.bmp
     目录           0  2010-07-08 19:45  fast-guided-filter\img_flash\
     文件      786488  2010-02-24 13:31  fast-guided-filter\img_flash\cave-flash.bmp
     文件      786488  2010-02-24 13:30  fast-guided-filter\img_flash\cave-noflash.bmp
     目录           0  2010-07-08 19:45  fast-guided-filter\img_smoothing\
     文件       77256  2010-02-27 16:16  fast-guided-filter\img_smoothing\cat.bmp
     文件        1021  2015-05-02 22:03  fast-guided-filter\readme.txt