* fix operators typo

* fix mot typo, test=document_fix

* fix fairmot modelzoo, test=document_fix

* fix use_gpu in deploy doc,  test=document_fix

* fix deploy doc, test=document_fix

* updata document, test=document_fix

* add frame_rate for mot infer video

* add doc of frame_rate for mot video infer, test=document_fix

* [dev] rbox update2 (#3828)

* set lr for 4 card as default, and update

* fix error

* add kitti metric

* clean kitti metric code

* fix kitticars doc

* fix feature model cfgs

* add kitti metric

* clean code of s2anet

* fix for paddle==2.1.0

* remove debug info

* update comment

* update link to release/2.2

* add the config of fairmot_headtracking

* mot video decode to images

* add infer_dir for mot

* fix export and unite pose infer

* remove task in mot source

* set image_dir

* update doc

* add sparse rcnn config

* update

* update

* fix tracker trt, add tracker to infer_cfg yml

* fix doc and deploy tracker

* add flops

* merge upstream

* clean code

* add batch_size in keypoint_detector

* add deepsort export model, reid infer

* fix jde_yolov3 metric

* fix deepsort deploy

* fix doc, clean code

* add mot deploy infer image, add run_benchmark

* add document for keypoint dataset preparation

* test=document_fix

* test=document_fix

* 关键点文档中json示例格式化显示，test=document_fix

* add mot keypoint unite python infer

* fix mot pose fps

* reorganize the code, and fix bug

* fix typo

* remve comment

* reorganize code

* Revert "reorganize code"

This reverts commit 4f928c3a46b264ba8815978b914bf81a46b66b62.

* set weight

* set default config

* fix code style

* add solov2 enhance model

add dark deploy supported, mpii deploy supported;

* support --eval for s2anet

* add spine dataset and config yml for s2anet

* add doc for s2anet

* update doc

* fix typo, test=document_fix

* add some comments, and update import