Itseez/opencv — pull request #2810 by ilya-lavrenov (2014-05-30 14:41:16+00:00)
Title: T-API: optimized UMat::copyTo with mask with dst uninitialized 

merge after https://github.com/Itseez/opencv/pull/2809

```
Name of Test old new new
vs
old
(x-factor)
CopyToWithMask::OCL_CopyToFixture::(640x480, 8UC1) 0.234 ms 0.115 ms 2.03
CopyToWithMask::OCL_CopyToFixture::(640x480, 32FC1) 0.464 ms 0.298 ms 1.56
CopyToWithMask::OCL_CopyToFixture::(640x480, 8UC4) 0.451 ms 0.337 ms 1.34
CopyToWithMask::OCL_CopyToFixture::(640x480, 32FC4) 1.475 ms 1.240 ms 1.19
CopyToWithMask::OCL_CopyToFixture::(1280x720, 8UC1) 0.438 ms 0.232 ms 1.89
CopyToWithMask::OCL_CopyToFixture::(1280x720, 32FC1) 1.188 ms 0.899 ms 1.32
CopyToWithMask::OCL_CopyToFixture::(1280x720, 8UC4) 1.172 ms 0.914 ms 1.28
CopyToWithMask::OCL_CopyToFixture::(1280x720, 32FC4) 4.919 ms 3.224 ms 1.53
CopyToWithMask::OCL_CopyToFixture::(1920x1080, 8UC1) 0.802 ms 0.494 ms 1.62
CopyToWithMask::OCL_CopyToFixture::(1920x1080, 32FC1) 2.435 ms 1.971 ms 1.24
CopyToWithMask::OCL_CopyToFixture::(1920x1080, 8UC4) 2.540 ms 2.223 ms 1.14
CopyToWithMask::OCL_CopyToFixture::(1920x1080, 32FC4) 8.820 ms 6.671 ms 1.32
CopyToWithMask::OCL_CopyToFixture::(3840x2160, 8UC1) 3.543 ms 2.001 ms 1.77
CopyToWithMask::OCL_CopyToFixture::(3840x2160, 32FC1) 9.174 ms 6.802 ms 1.35
CopyToWithMask::OCL_CopyToFixture::(3840x2160, 8UC4) 10.115 ms 7.104 ms 1.42
```