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web?https://item.taobao.com/item.htm?spm=a1z10.1-c.w4004-15151018122.5.uwGoq5&id=538759553146?-browser?

%?This?m-file?demoes?the?usage?of?SIFT?functions.?It?generates?SIFT?keypionts?and?descriptors?for?one?input?image.?
%?Author:?Yantao?Zheng.?Nov?2006.??For?Project?of?CS5240


%?Add?subfolder?path.
main;?
clc;
clear;

img1_dir?=?‘demo-data\‘;

img1_file?=?‘beaver11.bmp‘;

I1=imreadbw（[img1_dir?img1_file]）?;?
I1_rgb?=?imread（[img1_dir?img1_file]）?;?
I1=imresize（I1?[240?320]）;

I1_rgb?=imresize（I1_rgb?[240?320]）;
I1=I1-min（I1（:））?;?%圖像插值縮放可能產生值超出0-1的范圍的像素
I1=I1/max（I1（:））?;?%這兩步重新歸一化圖像縮放后的數據

%fprintf（‘CS5240?--?SIFT:?Match?image:?Computing?frames?and?descriptors.\n‘）?;
[frames1descr1gss1dogss1?]?=?do_sift（?I1?‘Verbosity‘?1?‘NumOctaves‘?4?‘Threshold‘??0.1/3/2?）?;?%0.04/3/2



figure（1）?;?clf?;?plotss（dogss1）?;?colormap?gray?;
drawnow?;

figure（2）?;?clf?;
imshow（I1_rgb）?;?axis?image?;

hold?on?;
h=plotsiftframe（?frames1?）?;?set（h‘LineWidth‘1‘Color‘‘g‘）?;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????189956??2009-09-30?09:59??sift\demo-data\beaver11.bmp

?????文件?????189956??2009-09-30?10:10??sift\demo-data\beaver13.bmp

?????文件??????14060??2003-02-17?17:45??sift\demo-data\image068.JPG

?????文件??????13579??2003-02-17?17:45??sift\demo-data\image069.JPG

?????文件?????578897??2003-04-25?15:36??sift\demo-data\view01.png

?????文件?????574557??2003-04-25?15:36??sift\demo-data\view02.png

?????文件???????5423??2010-06-03?10:31??sift\descriptor\do_descriptor.asv

?????文件???????5412??2010-06-03?10:53??sift\descriptor\do_descriptor.m

?????文件???????1528??2016-09-22?16:17??sift\do_demo_1.m

?????文件???????1735??2016-09-22?16:17??sift\do_demo_2.m

?????文件???????1750??2016-09-22?16:17??sift\do_demo_3.m

?????文件???????1747??2016-09-22?16:17??sift\do_demo_4.m

?????文件???????4290??2016-09-22?16:17??sift\do_sift.m

?????文件???????4322??2010-06-03?15:04??sift\key-location\do_extrefine.m

?????文件???????2133??2010-05-30?16:30??sift\key-location\do_localmax.m

?????文件????????614??2016-09-22?16:17??sift\main.m

?????文件???????4949??2010-06-16?20:19??sift\match\do_match.asv

?????文件???????5001??2010-06-16?20:23??sift\match\do_match.m

?????文件???????2505??2010-05-31?16:43??sift\orientation\do_orientation.m

?????文件????????464??2006-11-14?22:56??sift\scale-space\do_diffofg.m

?????文件???????2964??2010-05-30?15:28??sift\scale-space\do_gaussian.m

?????文件????????215??2006-11-14?22:59??sift\scale-space\smooth.m

?????文件???????2270??2016-09-22?16:18??sift\sift_demo.m

?????文件????????359??2006-11-15?13:53??sift\util\appendimages.m

?????文件????????301??2006-11-16?14:07??sift\util\imreadbw.m

?????文件???????1812??2010-06-03?15:22??sift\util\plotsiftframe.m

?????文件????????640??2006-11-20?15:19??sift\util\plotss.m

?????文件???????1859??2006-11-20?15:19??sift\util\tightsubplot.m

?????目錄??????????0??2010-05-23?12:15??sift\demo-data

?????目錄??????????0??2010-06-03?09:26??sift\descriptor

............此處省略9個文件信息