* update video download and infer

* update video_infer.py

* fix humanseg postprocess

* update visualdl

* updata optflow

* rm humanseg_server_quant

update README.md

Humanseg

* add RemoteSensing

* optimize data clip and normalize method for remote sensing

* add README.md

* polish README.md, optimize main.py and transforms.py, add transforms.md

* add demo dataset

* add create_dataset_list tool, requirements.txt

* add channel-by-channel normalize and clip, remove RemoteSensing import

* update solver.py and model_builder.py

* update solver.py

* update infer.py

* update model_builder.py for fitting different aug_method

* update model_builder.py

* update model_builder.py

* update export process

* save best model

* update train.py

* update train.py

* update train.py

* eval for last epoch model

* check model path

* check TEST.TEST_MODEL

* reconsitution humanseg

* first refactor humanseg

* update humanseg.py and add main.py

* frist add

* add shufflenet

* first add

* add hrnet

* add tutorial

* add humanseg infer

* add realtime humanseg

* update hrnet.py

* update humanseg.py

* rm cpp deploy

* add infer of resize_bylong

* update

* update infer.py

* update some

* update humanseg.py

* image_segment and video_segment add to class HumanSeg

* add quant

* resolve with_data_parallel problem

* add coeff params

* add demo

* update

* update __init__.py

* add setup.py

* fix bug of opencv

* update linux_build.sh