I=imread（‘wrod213.bmp‘）;
imshow（I）;
I=~I;????????%?腐蝕運算對灰度值為1的進行
figure?imshow（I）;
SE=strel（‘square‘3）;?%?定義3×3腐蝕結構元素
J=imerode（~ISE）;
BW=（~I）-J;????????%?檢測邊緣
figureimshow（BW）;

?屬性????????????大小?????日期????時間???名稱
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????.CA....???????215??2004-04-04?17:02??圖像處理\gradient.m

????.CA....??????1944??2009-05-27?16:42??圖像處理\matlab.txt

????.CA....???????908??2007-02-03?08:55??圖像處理\使用說明請參看右側注釋===〉〉.txt

????.CA....??????4862??2006-09-29?09:08??圖像處理\更多下載：中國圖像圖形網（解壓密碼：www.image2003.com）.html

????.C.D...?????????0??2010-04-29?19:39??圖像處理

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