function?[rowcolmax_local]?=?findLocalMaximum（valradius）
????%?Determine?the?local?maximum?of?a?given?value
????%
????%?Author?::?Vincent?Garcia
????%?Date???::?09/02/2007
????%
????%?INPUT
????%?=====
????%?val????:?the?NxM?matrix?containing?values
????%?radius?:?the?radius?of?the?neighborhood
????%
????%?OUTPUT
????%?======
????%?row???????:?the?row?position?of?the?local?maxima
????%?col???????:?the?column?position?of?the?local?maxima
????%?max_local	:?the?NxM?matrix?containing?values?of?val?on?unique?local?maximum
????%
????%?EXAMPLE
????%?=======
????%?[lcm]?=?findLocalMaximum（imgradius）;
????



????%?FIND?LOCAL?MAXIMA?BY?DILATION?（FAST）?/!\?NON?UNIQUE?/!\
????%?mask?=?fspecial（‘disk‘radius）>0;
????%?val2?=?imdilate（valmask）;
????%?index?=?val==val2;
????%?[rowcol]?=?find（index==1）;
????%?max_local?=?zeros（size（val））;
????%?max_local（index）?=?val（index）;


????%?FIND?UNIQUE?LOCAL?MAXIMA?USING?FILTERING?（FAST）
????mask??=?fspecial（‘disk‘radius）>0;
????nb????=?sum（mask（:））;
????highest??????????=?ordfilt2（val?nb?mask）;
????second_highest???=?ordfilt2（val?nb-1?mask）;
????index????????????=?highest==val?&?highest~=second_highest;
????max_local????????=?zeros（size（val））;
????max_local（index）?=?val（index）;
????[rowcol]????????=?find（index==1）;


????%?FIND?UNIQUE?LOCAL?MAXIMA?（FAST）
????%?val_height??=?size（val1）;
????%?val_width???=?size（val2）;
????%?max_local???=?zeros（val_heightval_width）;
????%?val_enlarge?=?zeros（val_height+2*radiusval_width+2*radius）;
????%?val_mask????=?zeros（val_height+2*radiusval_width+2*radius）;
????%?val_enlarge（?（1:val_height）+radius??（1:val_width）+radius?）?=?val;
????%?val_mask（????（1:val_height）+radius??（1:val_width）+radius?）?=?1;
????%?mask??=?fspecial（‘disk‘radius）>0;
????%?row?=?zeros（val_height*val_width1）;
????%?col?=?zeros（val_height*val_width1）;
????%?index?=?0;
????%?for?l?=?1:val_height
????%?????for?c?=?1:val_width
????%?????????val_ref?=?val（lc）;
????%?????????neigh_val??=?val_enlarge（l:l+2*radiusc:c+2*radius）;
????%?????????neigh_mask?=?val_mask（???l:l+2*radiusc:c+2*radius）.*mask;
????%?????????neigh_sort?=?sort（neigh_val（neigh_mask==1））;
????%?????????if?val_ref==neigh_sort（end）?&&?val_ref>neigh_sort（end-1）
????%?????????????index??????????=?index+1;
????%?????????????row（index1）???=?l;
????%?????????????col（index1）???=?c;
????%?????????????max_local（lc）?=?val_ref;
????%?????????end
????%?????end
????%?end
????%?row（index+1:end:）?=?[];
????%?col（index+1:end:）?=?[];


end

?屬性????????????大小?????日期????時間???名稱
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?????文件?????304182??2008-08-25?16:45??keypointExtraction\keypointExtraction\1.bmp

?????文件?????102454??2009-04-15?09:56??keypointExtraction\keypointExtraction\1G.BMP

?????文件??????66182??2008-08-25?16:45??keypointExtraction\keypointExtraction\2.bmp

?????文件??????77878??2009-04-15?09:56??keypointExtraction\keypointExtraction\2G.BMP

?????文件?????170474??2007-08-01?13:21??keypointExtraction\keypointExtraction\door.jpg

?????文件???????2563??2007-12-07?10:25??keypointExtraction\keypointExtraction\findLocalMaximum.m

?????文件???????1133??2007-12-07?10:28??keypointExtraction\keypointExtraction\kp_gilles.m

?????文件???????2032??2009-04-15?10:36??keypointExtraction\keypointExtraction\kp_harris.m

?????文件???????2032??2009-04-15?10:36??keypointExtraction\keypointExtraction\kp_harris1.m

?????文件???????3512??2007-12-07?10:38??keypointExtraction\keypointExtraction\kp_harrislaplace.m

?????文件???????1962??2007-12-07?10:10??keypointExtraction\keypointExtraction\kp_log.m

?????文件????????631??2007-12-07?10:19??keypointExtraction\keypointExtraction\kp_susan.m

?????文件??????18357??2007-08-03?12:53??keypointExtraction\keypointExtraction\patrol.jpg

?????文件???????1969??2007-12-06?09:45??keypointExtraction\keypointExtraction\README.txt

?????文件?????139536??2007-08-01?07:15??keypointExtraction\keypointExtraction\sunflower.jpg

?????文件??????40960??2006-09-23?16:22??keypointExtraction\keypointExtraction\susan.dll

?????文件???????2113??2006-09-23?17:16??keypointExtraction\keypointExtraction\susan.m

?????文件???????1536??2009-04-15?16:11??keypointExtraction\keypointExtraction\test.m

?????文件??????65551??2006-12-14?15:46??keypointExtraction\keypointExtraction\test.pgm

?????文件??????26457??2009-04-15?09:52??keypointExtraction\keypointExtraction\測試結果\1H.jpg

?????文件??????26587??2009-04-15?10:05??keypointExtraction\keypointExtraction\測試結果\1s.jpg

?????文件??????21546??2009-04-15?09:54??keypointExtraction\keypointExtraction\測試結果\2H.jpg

?????文件??????19167??2009-04-15?10:02??keypointExtraction\keypointExtraction\測試結果\2S.jpg

????..A.SH.?????23040??2009-04-15?10:06??keypointExtraction\keypointExtraction\測試結果\Thumbs.db

?????目錄??????????0??2009-04-15?10:45??keypointExtraction\keypointExtraction\測試結果

?????目錄??????????0??2009-04-15?16:02??keypointExtraction\keypointExtraction

?????目錄??????????0??2009-04-15?16:02??keypointExtraction

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??????????????1121854????????????????????27



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