message: Add core/preprocess/hwvideoframe/README.md
diff: @@ -19,4 +19,4 @@ from .image_reader import DBPostProcess, FilterBoxes, GetRotateCropImage, Sorted
  from .lac_reader import LACReader
  from .senta_reader import SentaReader
  from libgpupreprocess import Image2Gpubuffer, Gpubuffer2Image, RGB2BGR, BGR2RGB
  -from libgpupreprocess import Div, Sub, Normalize, CenterCrop, Resize
  +from libgpupreprocess import Div, Sub, Normalize, CenterCrop, Resize, ResizeByFactor
  