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Add Cutout augmenter #531

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Jan 6, 2020
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Add Cutout augmenter #531

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9 changes: 9 additions & 0 deletions changelogs/master/added/20191220_cutout.md
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# Cutout Augmenter #531

* Added `imgaug.augmenters.arithmetic.apply_cutout_()`, which replaces
in-place a single rectangular area with a constant intensity value or a
constant color or gaussian noise.
See also the [paper](https://arxiv.org/abs/1708.04552) about Cutout.
* Added `imgaug.augmenters.arithmetic.apply_cutout()`. Same as
`apply_cutout_()`, but copies the input images before applying cutout.
* Added `imgaug.augmenters.arithmetic.Cutout`.
15 changes: 15 additions & 0 deletions checks/check_cutout.py
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from __future__ import print_function, division, absolute_import
import imgaug as ia
import imgaug.augmenters as iaa


def main():
aug = iaa.Cutout(fill_mode=["gaussian", "constant"], cval=(0, 255),
fill_per_channel=0.5)
image = ia.quokka()
images_aug = aug(images=[image] * 16)
ia.imshow(ia.draw_grid(images_aug, cols=4, rows=4))


if __name__ == "__main__":
main()
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