* Feat add CLRNet

* Update CLRNet README.md

* Update requirements: add imgaug>=0.4.0 for CLRNet

* Update CLRNet README.md

* Update README.md

* Update Rename clrnet_utils.py

* Update CLRNet demo & delete demo result

* Update README.md add weight for culane

* Update README.cn.md add training logs

* Feat add dataset download

* Fix bugs when lanes is empty

* Update README

* Update README for dataset info

* Fix export model

* Update configs & README

* style: update codestyle

* Style update op codestyple

* Fix eval process

* Fix eval process

* Update README&configs

* Fix deploy infer

* Fix mkdir in lane visualize

* Docs Update README

* Docs Rename configs

* Docs update weights

---------
Co-authored-by: NLokeZhou <aishenghuoaiqq@163.com>

* petr train ok

train ok

refix augsize

affine size fix

update msdeformable

fix flip/affine

fix clip

add resize area

add distortion

debug mode

fix pos_inds

update edge joints

update word mistake

* delete extra codes;adapt transformer modify;update code format

* reverse old transformer modify

* integrate datasets

* add picodet new config

* [ppyolov3] add ppyolov3 base code

* add ppyolov3 s/m/x

* modify ema

* modify code to convert onnx successfully

* support arbitrary shape

* update config to use amp default

* refine ppyolo_head code

* modify reparameter code

* refine act layer

* adapter pico_head and tood_head code

* remove ppyolov3 yaml

* fix codestyle
Co-authored-by: Nwangxinxin08 <wangxinxin08@baidu.com>

* add a new version code of PicoDet

* update PicoDet Architecture and config

* add gfl model and PicoDet

* add fairmot

* rename pretrain_weights

* add comments; reuse focal loss and convnorm

* update comments

* ttfnet infer

* fix ttfnet deploy

* clean code

* add comment, fix config

* add comment, update modelzoo

* fix norm resize, update modelzoo

* add hrnet, test=develop

* add comment, test=dygraph

* move config file to hrnet, test=dygraph

* add 2x model

* add hrnet README

* update latest config structure, test=dygraph

* Rename dir name in modeling

* Update changelog

Merge dygraph branch into master branch.
Co-authored-by: NFDInSky <48318485+FDInSky@users.noreply.github.com>
Co-authored-by: Nsunxl1988 <47514455+sunxl1988@users.noreply.github.com>
Co-authored-by: Nwangguanzhong <jerrywgz@126.com>
Co-authored-by: Nwangxinxin08 <69842442+wangxinxin08@users.noreply.github.com>
Co-authored-by: Nwanghuancoder <wanghuancoder@163.com>
Co-authored-by: Ncnn <liuhui29@baidu.com>
Co-authored-by: NGuanghua Yu <742925032@qq.com>
Co-authored-by: NKaipeng Deng <dengkaipeng@baidu.com>
Co-authored-by: Nroot <root@bjyz-sys-gpu-kongming0.bjyz.baidu.com>

* Rename object_detection to PaddleDetection
* Small fix for doc