function?y?=?isbw（x）
%ISBW?Return?true?for?binary?image.
%???FLAG?=?ISBW（A）?returns?1?if?A?is?a?binary?image?and?0
%???otherwise.
%
%???ISBW?uses?these?criteria?to?decide?if?A?is?a?binary?image:
%
%???-?if?A?is?of?class?double?all?values?must?be?either?0?or?1
%?????and?the?number?of?dimensions?of?A?must?be?2.
%
%???-?If?A?is?of?class?uint8?its?logical?flag?must?be?on?and
%?????the?number?of?dimensions?of?A?must?be?2.
%
%???Note?that?a?four-dimensional?array?that?contains?multiple
%???binary?images?returns?0?not?1.
%
%???Class?Support
%???-------------
%???A?can?be?of?class?uint8?or?double.
%
%???See?also?ISIND?ISGRAY?ISRGB.

%???Clay?M.?Thompson?2-25-93
%???Copyright?1993-1998?The?MathWorks?Inc.??All?Rights?Reserved.
%???$Revision:?5.8?$??$Date:?1997/11/24?15:35:45?$

y?=?ndims（x）==2;
if?isa（x?‘double‘）?&?y
???if?islogical（x）
??????%?At?first?just?test?a?small?chunk?to?get?a?possible?quick?negative??
??????[mn]?=?size（x）;
??????chunk?=?x（1:min（m10）1:min（n10））;?????????
??????y?=?~any（chunk（:）~=0?&?chunk（:）~=1）;
??????%?If?the?chunk?is?a?binary?image?test?the?whole?image
??????if?y
?????????y?=?~any（x（:）~=0?&?x（:）~=1）;
??????end
???else
??????y?=?0;
???end
elseif?isa（x?‘uint8‘）?&?y
???y?=?islogical（x）;
end

y?=?logical（double（y））;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-08-18?12:49??GUI\
?????文件??????801816??2017-08-11?02:33??GUI\grayPic.jpg
?????文件????????1318??2017-06-22?20:54??GUI\isbw.m
?????文件??????115745??2017-08-18?12:47??GUI\Main_Interface.fig
?????文件???????39209??2017-08-18?12:46??GUI\Main_Interface.m
?????文件?????????766??2017-06-30?01:33??GUI\otsu.m
?????文件????????3322??2017-06-22?22:10??GUI\SimpleTab.zip