Flip

FlipX/FlipY can be used to flip the input image horizontally/vertically.

using Augmentor
using ImageShow, ImageCore

img_in = testpattern(RGB, ratio=0.5)

mosaicview(
    img_in,
    augment(img_in, FlipX()),
    augment(img_in, FlipY());
    fillvalue=colorant"white", nrow=1, npad=10
)

To perform a random flip, you can also pass the probablity to the constructor. For example, FlipX(0.5) flips the image with half chance.

References

Augmentor.FlipX — Type

FlipX <: Augmentor.AffineOperation

Description

Reverses the x-order of each pixel row. Another way of describing it would be that it mirrors the image on the y-axis, or that it mirrors the image horizontally.

If created using the parameter p, the operation will be lifted into Either(p=>FlipX(), 1-p=>NoOp()), where p denotes the probability of applying FlipX and 1-p the probability for applying NoOp. See the documentation of Either for more information.

Usage

FlipX()

FlipX(p)

Arguments

p::Number : Optional. Probability of applying the operation. Must be in the interval [0,1].

See also

FlipY, Either, augment

Examples

julia> using Augmentor

julia> img = [200 150; 50 1]
2×2 Matrix{Int64}:
 200  150
  50    1

julia> img_new = augment(img, FlipX())
2×2 Matrix{Int64}:
 150  200
   1   50

source

Augmentor.FlipY — Type

FlipY <: Augmentor.AffineOperation

Description

Reverses the y-order of each pixel column. Another way of describing it would be that it mirrors the image on the x-axis, or that it mirrors the image vertically.

If created using the parameter p, the operation will be lifted into Either(p=>FlipY(), 1-p=>NoOp()), where p denotes the probability of applying FlipY and 1-p the probability for applying NoOp. See the documentation of Either for more information.

Usage

FlipY()

FlipY(p)

Arguments

p::Number : Optional. Probability of applying the operation. Must be in the interval [0,1].

See also

FlipX, Either, augment

Examples

julia> using Augmentor

julia> img = [200 150; 50 1]
2×2 Matrix{Int64}:
 200  150
  50    1

julia> img_new = augment(img, FlipY())
2×2 Matrix{Int64}:
  50    1
 200  150

source

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