GitLab

* add brightness and contrast augmentation

* remove unnecessary

* reformat

* relax the precision constrain for adjust_brightness aug

* fix percision assertion error in unit test

* remove toy

* rename alpha as factor

* use np.testing.assert_allclose in place of np.less_equal

* add equalize augmentation in mmcv

* delete unnecessary

* reformat

* remove clip in implementing equalize, and add uint test with case step=0

* remove clip in implementing equalize, and add uint test with case step=0

* add comments for unit test

* rename function name as imequalize

* add Color augmentation

* reformat

* reformat

* reformat docstring

* reformat docstring

* add more unit test

* add more unit test

* add clip value and uint test for image with type float

* rename function name

* refactor unittests

* split test_video.py to two files