Render Black and White — render

Transforms an image to black and white, preserving luminance.

render_bw(
  image,
  rgb_coef = c(0.2126, 0.7152, 0.0722),
  filename = NULL,
  preview = FALSE
)

Arguments

image: 3-layer RGB/4-layer RGBA array, rayimg class, or filename of an image.
rgb_coef: Default c(0.2126, 0.7152, 0.0722). Length-3 numeric vector listing coefficients to convert RGB to luminance.
filename: Default NULL. The filename of the image to be saved. If this is not given, the image will be plotted instead.
preview: Default FALSE. Whether to plot the convolved image, or just to return the values.

Value

A rayimg RGBA array.

Examples

if(run_documentation()){
#Plot the image with a title
dragon |>
 render_title("Dragon", title_offset=c(10,10), title_bar_color="black",
           title_size=20, title_color = "white") |>
 render_bw(preview = TRUE)
}