aug_transforms: Augmentation

In fastai: Interface to 'fastai'

Augmentation

Description

Utility func to easily create a list of flip, rotate, zoom, warp, lighting transforms.

Usage

aug_transforms(
  mult = 1,
  do_flip = TRUE,
  flip_vert = FALSE,
  max_rotate = 10,
  min_zoom = 1,
  max_zoom = 1.1,
  max_lighting = 0.2,
  max_warp = 0.2,
  p_affine = 0.75,
  p_lighting = 0.75,
  xtra_tfms = NULL,
  size = NULL,
  mode = "bilinear",
  pad_mode = "reflection",
  align_corners = TRUE,
  batch = FALSE,
  min_scale = 1
)

Arguments

mult	ratio
do_flip	to do flip
flip_vert	flip vertical or not
max_rotate	maximum rotation
min_zoom	minimum zoom
max_zoom	maximum zoom
max_lighting	maximum lighting
max_warp	maximum warp
p_affine	probability affine
p_lighting	probability lighting
xtra_tfms	extra transformations
size	size of image
mode	mode
pad_mode	padding mode
align_corners	align_corners
batch	batch size
min_scale	minimum scale

Value

None

Examples

## Not run: 

URLs_PETS()

path = 'oxford-iiit-pet'

path_img = 'oxford-iiit-pet/images'
fnames = get_image_files(path_img)

dls = ImageDataLoaders_from_name_re(
path, fnames, pat='(.+)_.jpg$',
item_tfms=Resize(size = 460), bs = 10,
batch_tfms=list(aug_transforms(size = 224, min_scale = 0.75),
                Normalize_from_stats( imagenet_stats() )
)
)


## End(Not run)

fastai documentation built on June 22, 2024, 11:15 a.m.