no zlib

[longgang123]

in win10x64 vs2017 I try to debug RLOFLib\RLOFSample\built\RLOFApp opencv3.4.1
use the lib like below,but get an error no zlib.dll. then i add zlib.dll zlibd.dll zlib.lib zlibd.lib to RLOFLib\lib
unable to start app error(0xc000007b)
D:\Libs\RLOFLib\lib\libRLOF_vc$(PlatformToolsetVersion)_$(PlatformName)d.lib
D:\Libs\OpenCV\OpenCV341\build\x64\vc15\lib\opencv_world341d.lib
D:\Libs\OpenCV\OpenCV341\build\x64\vc15\lib\opencv_img_hash341d.lib
kernel32.lib
user32.lib
gdi32.lib
winspool.lib
shell32.lib
ole32.lib
oleaut32.lib
uuid.lib
comdlg32.lib
advapi32.lib

[tsenst]

Robust Local Optical Flow is now part of the OpenCV Contribution Release 4.1.0. It is easy to assess the method there, see https://docs.opencv.org/4.1.0/d2/d84/group__optflow.html