upgrade opencv to 3.3.1, complete patch similarity
authorPeng Li <seudut@gmail.com>
Fri, 20 Jul 2018 14:57:45 +0000 (22:57 +0800)
committerPeng Li <seudut@gmail.com>
Fri, 20 Jul 2018 14:57:45 +0000 (22:57 +0800)

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