High level effects applied to an entire image. These are mostly just for fun.

image_despeckle(image, times = 1L)

image_reducenoise(image, radius = 1L)

image_noise(image, noisetype = "gaussian")

image_blur(image, radius = 1, sigma = 0.5)

image_charcoal(image, radius = 1, sigma = 0.5)

image_oilpaint(image, radius = 1)

image_emboss(image, radius = 1, sigma = 0.5)

image_implode(image, factor = 0.5)

image_negate(image)

Arguments

image

magick image object returned by image_read() or image_graph()

times

number of times to repeat the despeckle operation

radius

radius, in pixels, for various transformations

noisetype

string with a noisetype value from noise_types.

sigma

the standard deviation of the Laplacian, in pixels.

factor

image implode factor (special effect)

See also

Examples

logo <- image_read("logo:") image_despeckle(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_reducenoise(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_noise(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_blur(logo, 10, 10)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_charcoal(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 Gray FALSE 0 72x72
image_oilpaint(logo, radius = 3)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_emboss(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_implode(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72
image_negate(logo)
#> # A tibble: 1 x 7 #> format width height colorspace matte filesize density #> <chr> <int> <int> <chr> <lgl> <int> <chr> #> 1 GIF 640 480 sRGB FALSE 0 72x72