function?B?=?bound2im（b?M?N?x0?y0）

[np?nc]?=?size（b）;
if?np????b?=?b‘;?%?To?convert?to?size?np-by-2.
???[np?nc]?=?size（b）;
end
?
%?Make?sure?the?coordinates?are?integers.
x?=?round（b（:?1））;?
y?=?round（b（:?2））;
?
%?Set?up?the?default?size?parameters.?
x?=?x?-?min（x）?+?1;
y?=?y?-?min（y）?+?1;
B?=?false（max（x）?max（y））;
C?=?max（x）?-?min（x）?+?1;
D?=?max（y）?-?min（y）?+?1;
?
if?nargin?==?1??
???%?Use?the?preceding?default?values.
elseif?nargin?==?3
???if?C?>?M?|?D?>?N
??????error（‘The?boundary?is?outside?the?M-by-N?region.‘）
???end
???%?The?image?size?will?be?M-by-N.?Set?up?the?parameters?for?this.
???B?=?false（M?N）;
???%?Distribute?extra?rows?approx.?even?between?top?and?bottom.
???NR?=?round（（M?-?C）/2）;?
???NC?=?round（（N?-?D）/2）;?%?The?same?for?columns

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-12-03?18:27??源程序\
?????文件????????4025??2017-12-03?18:19??源程序\a0.png
?????文件????????2465??2017-12-03?18:19??源程序\b0.png
?????文件????????1286??2017-11-18?19:07??源程序\bound2im.m
?????文件????????2563??2017-12-03?18:19??源程序\c0.png
?????文件????????4999??2017-12-03?10:21??源程序\ceshi1.png
?????文件???????13954??2017-12-03?10:39??源程序\ceshi2.png
?????文件?????????195??2017-12-02?20:13??源程序\dist.m
?????文件?????????437??2017-12-03?00:55??源程序\frdescp.m
?????文件?????????492??2017-11-19?21:10??源程序\ifrdescp.m
?????文件?????????622??2017-12-03?01:12??源程序\normalfrd.m
?????文件????????5446??2017-12-03?12:32??源程序\pingyi.png
?????文件????????8910??2017-12-03?12:32??源程序\shensuo.png
?????文件?????????745??2017-12-03?18:20??源程序\test1.m
?????文件?????????953??2017-12-03?18:25??源程序\test2.m
?????文件?????????345??2017-12-03?18:24??源程序\test3.m
?????文件???????14451??2017-12-03?12:32??源程序\xuanzhuan.png
?????文件????????4025??2017-12-03?12:32??源程序\yuantu.png