finding longest length

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Mohammad Golam Kibria
Mohammad Golam Kibria am 14 Jan. 2012
Hi ,I have a matrix as follows I =
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 1 0 1 0 0 0 1 0
0 1 0 1 1 0 1 0 0 1
1 0 0 0 1 0 1 1 0 0
0 0 0 0 1 0 1 0 0 0
0 1 1 1 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
I need the output as follows:
I =
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
0 0 1 0 0 0 0 0 1 0
0 1 0 1 0 0 0 0 0 1
1 0 0 0 0 0 0 1 0 0
0 0 0 0 1 0 1 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
i.e only the longest length of pixel that touches two opposite boundary.can any body help please?Thanks

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