%?CIRCULARSTRUCT
%
%?Function?to?construct?a?circular?structuring?element
%?for?morphological?operations.
%
%?function?strel?=?circularstruct（radius）
%
%?Note?radius?can?be?a?floating?point?value?though?the?resulting
%?circle?will?be?a?discrete?approximation
%
%?Peter?Kovesi???March?2000

function?strel?=?circularstruct（radius）

if?radius???error（‘radius?must?be?>=?1‘）;
end

dia?=?ceil（2*radius）;??%?Diameter?of?structuring?element

if?mod（dia2）?==?0?????%?If?diameter?is?a?odd?value
?dia?=?dia?+?1;????????%?add?1?to?generate?a?‘centre?pixel‘
end

r?=?fix（dia/2）;
[xy]?=?meshgrid（-r:r）;
rad?=?sqrt（x.^2?+?y.^2）;??
strel?=?rad?<=?radius;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????79209??2020-11-16?21:31??SLIC+dbscan\16068.jpg
?????文件???????47681??2020-11-16?21:31??SLIC+dbscan\49024.jpg
?????文件???????54207??2020-11-16?21:31??SLIC+dbscan\8068.jpg
?????文件?????????675??2020-11-16?21:31??SLIC+dbscan\circularstruct.m
?????文件????????5656??2020-11-16?21:31??SLIC+dbscan\cleanupregions.m
?????文件????????5381??2020-11-16?21:31??SLIC+dbscan\dbscan.m
?????文件?????????788??2020-11-16?21:31??SLIC+dbscan\demo.m
?????文件????????1672??2020-11-16?21:31??SLIC+dbscan\dist.m
?????文件????????2098??2020-11-16?21:31??SLIC+dbscan\dist2.m
?????文件????????2397??2020-11-16?21:31??SLIC+dbscan\drawregionboundaries.m
?????文件????????2644??2020-11-16?21:31??SLIC+dbscan\finddisconnected.m
?????文件????????2197??2020-11-16?21:31??SLIC+dbscan\makeregionsdistinct.m
?????文件????????1165??2020-11-16?21:31??SLIC+dbscan\maskimage.m
?????文件????????4451??2020-11-16?21:31??SLIC+dbscan\mcleanupregions.m
?????文件????????4638??2020-11-16?21:31??SLIC+dbscan\regionadjacency.m
?????文件????????2412??2020-11-16?21:31??SLIC+dbscan\renumberregions.m
?????文件????????1096??2020-11-16?21:31??SLIC+dbscan\rgb2lab.m
?????文件???????11600??2020-11-16?21:31??SLIC+dbscan\slic.m
?????文件????????7324??2020-11-16?21:31??SLIC+dbscan\spdbscan.m
?????文件????????2326??2020-11-16?21:31??SLIC+dbscan\testdbscan.m