Problem with adding image from OpenCV to Material in unreal

hi guys.
Help me please with adding image from OpenCV to Material in unreal.
I try to use tutorial A new, community-hosted Unreal Engine Wiki - Announcements and Releases - Unreal Engine Forums
but I have some problem with displaying. Texture is gray and curve.
result:
7f19c08c0e211ec6236d198fced0a9754a2e2ac4.jpeg
original texture:
test.jpg
my code:
Mar 16 2:44 AM - Codeshare