Fill in Surrouding data

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Pete sherer
Pete sherer 2024-11-1，15:45
评论： Pete sherer 2024-11-1，17:19
Hi,
I have a matrix with bit mask [0, 1]. Is there are quick way to fill surrounding 1 data with value 1.
For example, with
ttmp =
[0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 1 0 1 0 0 0 0
];
I want to turn in into
ttmp2=
[0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 0 1 1 1 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 1 0 1 1 1 0 0
0 0 1 1 1 1 1 0 0 0]
Thanks much

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采纳的回答

Dave B
Dave B 2024-11-1，15:55
Ran in:
You could use conv2 with little kernel and then turn "overlapping" 2's into ones:
ttmp = [0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 1 0 1 0 0 0 0]
ttmp = 7×10
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0
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tconv = conv2(ttmp,[0 1 0;1 1 1;0 1 0],'same')
tconv = 7×10
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 2 1 1 0 0 0 0 1 1 2 1 2 0 0 0
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ttmp2 = double(tconv>0)
ttmp2 = 7×10
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 1 1 0 0 0 0 1 1 1 1 1 0 0 0
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