* Add hooks

* change hooks to custom_hooks

* Refine docs and fix format issues

* reformat

* fix mock

* Refine format

* Reorganize tutorials

* Update install doc

* resolve comments

Fix NaN issue when predicted [x1,y1,x2,y2] box has no area e.g. [30., 75., 30., 75.].  Predicted boxes of zero area occur early in training of some anchor free detectors.

L268: [wrong argumentation]: --work_dir --> --work-dir

* add CornerHead

* add unittest for CornerHead

* fix formatting

* fix a bug of ae_loss, update unittest for CornerHead

* add docstring for corner_head.py

* fix bug

* add docstring for gaussian_target.py, formatting

* fix unittest

* use batched_nms

* update docstrings

* modify variable names

* update docstrings

* update figure in docstrings, add models/utils apis in html

* update docstrings, update BiCornerPool

* import ops from mmcv

* fixed nms build warning

* iou losses

* fix isort error

* fixed yapf errors

* docstring and details of ciou/diou loss

* fixed +1 in iou losses

* update docstrings

* Fixed bugs about cascade_roi_head.

* Fixed the bug of refining bg rois at training when reg_class_agnostic is False.

* Fixed the bug of potentially infering roi label to be bg at inference.

* Reformatted code.

* Ensured foreground roi_labels when refining bboxes at training.

* Fixed typo.

* Fixed incompatibility between mmdet2.2(ops/conv_ws.py) and mmcv1.0.0

* Fixed typo.

* update FSAF model zoo

* Add foreground_dominate argument to center region assigner

* Refine docs and fix format issues

* reformat

* fix mock

* Refine format

* Reorganize tutorials

* Fixed BC of stem_channels

* fixed init

* typo

* Update dockerfile

* update install.md

* update install.md

* Add colab link

* Use mmcv-full in requirements

* Migrate to MMCV 1.0.2

* Resolve path issue

* Use newest MMDet

* Update projects

* Update install process

* Complete model zoo

* Update memory

* Update setup.py

* update ci

* Update install scripts

* Update installation of mmcv

* clean op

* clean

* update build.yml

* fix setup

* change ci mmcv version

* change ci mmcv version

* add install pre-build mmcv instructions

* update mmcv url, move some unnit tests to mmcv

* update ci mmcv

* test

* test

* test

* fix unit test

* fix unit test

* fix onnx script

* update mmcv url

* fix typo

* fix some doc

* Bump version

* resolve comments

* Fix version bug

Co-authored-by: ZwwWayne <wayne.zw@outlook.com>

* fix bug in MultiScaleFlipAug

* list -> tuple

* add fp16 benchmark

* fix typo

* processing ignore boxes in atss assigner

* formatting

* flake8 correct

* correct flake8 v2

* frommatting via pycharm

* OMG this is the last commit

* fix bug

* format

Co-authored-by: d.rybalchenko <d.rybalchenko@visionlabs.ru>
Co-authored-by: Cao Yuhang <yhcao6@gmail.com>

* fix typo in docs and docstring

* update launch utility url

* add allow_negative_crop in RandomCrop

* Revise docstring

* change according to comments

When `inside_flags.any()` is `null`, the return value is abnormal.

* Fix bug of ordered list in getting_started

* Update docs

* Update usage

* Change example order

* fix init bug in rfp

* add comments about the init bug in rfp

* update model link

* update performance

Co-authored-by: Jiarui XU <xvjiarui0826@gmail.com>

* add logo and resources folder

* update logo size

* change logo size to 400

* change logo size to 600

* Add colab training tutorial

* Update tutorial codes and fix bug

* Clean files, refactor TBD

* Update tutorials

* Remove duplicated code

* Mv tutorial

* restructure unit tests

* fix paths

* doc: Update install.md

add `conda install Cython` before install the forked version of `pycocotools`

* add cython to requirements/build.txt

Co-authored-by: Kai Chen <chenkaidev@gmail.com>

* fix isort issue

* limit isort version to 4.3.21

* add --recursive back for isort