R: Add Vignette Effect

add_vignette {rayimage}

R Documentation

Add Vignette Effect

Description

Takes an RGB array/filename and adds a camera vignette effect.

Usage

add_vignette(image, vignette = 0.5, filename = NULL, preview = FALSE)

Arguments

`image`	Image filename or 3-layer RGB array.
`vignette`	Default `0.5`. A camera vignetting effect will be added to the image. `1` is the darkest vignetting, while `0` is no vignetting. If vignette is a length-2 vector, the second entry will control the blurriness of the vignette effect (`1` is the default, e.g. `2` would double the blurriness but would take much longer to compute).
`filename`	Default `NULL`. Filename which to save the image. If `NULL` and `preview = FALSE`, returns an RGB array.
`preview`	Default `FALSE`. If `TRUE`, it will display the image in addition to returning it.

Value

3-layer RGB array of the processed image.

Examples

#Plot the dragon
plot_image(dragon)

#Add a vignette effect:

add_vignette(dragon, preview = TRUE, vignette = 0.5)

#Darken the vignette effect:

add_vignette(dragon, preview = TRUE, vignette = 1)


#Increase the width of the blur by 50%:

add_vignette(dragon, preview = TRUE, vignette = c(1,1.5))

[Package rayimage version 0.3.1 Index]