GaussianBlur

GaussianBlur can be used to blur the input image using a gaussian kernel with a specified kernel size and standard deviation.

using Augmentor
using ImageShow, ImageCore

img_in = testpattern(RGB, ratio=0.5)

mosaicview(
    img_in,
    augment(img_in, GaussianBlur(3)),
    augment(img_in, GaussianBlur(5, 2.5));
    fillvalue=colorant"white", nrow=1, npad=10
)

References

Augmentor.GaussianBlur — Type

GaussianBlur <: ColorOperation

Description

Blurs an image using a Gaussian filter.

Usage

GaussianBlur(k, [σ])

Arguments

k : Integer or AbstractVector of Integer that denote the kernel size. It must be an odd positive number.
σ : Optional. Real or AbstractVector of Real that denote the standard deviation. It must be a positive number. Defaults to 0.3 * ((k - 1) / 2 - 1) + 0.8.

Examples

using Augmentor
img = testpattern()

# use exactly k=3 and σ=1.0
augment(img, GaussianBlur(3, 1.0))

# pick k and σ randomly from the specified ranges
augment(img, GaussianBlur(3:2:7, 1.0:0.1:2.0))

source

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