matlab点跟踪和边界跟踪

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f=imread（‘circuit.tif‘）;
subplot（221）;imshow（f）;title（‘原图像‘）
seedx=[307686];
seedy=[11028110];
%选择了3个种子点
hold on
plot（seedxseedy‘gs‘‘linewidth‘1）;
title（‘原始图像及种子点位置‘）;
f=double（f）;
markerim=f==f（seedy（1）seedx（1））;
for i=2:length（seedx）
    markerim=markerim|（f==f（seedy（i）seedx（i）））;
end
thresh=[12612];
%3个种子点的阈值
maskim=zeros（size（f））;
for i=1:length（seedx）
    g=abs（f-f（seedy（i）seedx（i）））<=thresh（i）;
    maskim=maskim|g;
end
[gnr]=bwlabel（imreconstruct（markerimmaskim）8）;
g=mat2gray（g）;
subplot（222）;imshow（g）;title（‘三个种子生长结果图像‘）

 属性            大小     日期    时间   名称
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     文件        171  2008-09-05 14:59  test1\track1.m

     文件        148  2008-09-05 14:56  test1\track1.asv

     文件       1599  2008-09-05 15:27  test1\boundary_trace.m

     文件       1579  2008-09-05 15:26  test1\boundary_trace.asv

     文件       8382  2008-09-05 15:24  test1\border.bmp

     文件        378  2008-09-09 16:32  test1\track2.m

     文件        374  2008-09-09 16:29  test1\track2.asv

     文件       1649  2008-09-09 17:21  test1\boundary_trace2.m

     文件       1652  2008-09-09 16:49  test1\boundary_trace2.asv

     文件       8522  2008-10-13 09:36  test1\border2.bmp

     文件      62178  2008-09-09 16:31  test1\ellipse.bmp

     文件      17462  2008-08-15 17:33  test1\Arrowsalt0.02.bmp

     文件      17462  2008-08-15 17:39  test1\Arrowgaussian0.02.bmp

     文件      17464  2008-05-19 01:43  test1\Arrow.bmp

     文件        614  2008-10-15 13:35  test1\areagrow.m

     文件        617  2008-10-15 13:28  test1\areagrow.asv

     目录          0  2008-11-15 20:34  test1

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