render_bw {rayimage}

Render Black and White

Description

Transforms an image to black and white, preserving luminance.

Usage

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

Arguments

image

Image filename, 3-layer RGB array, or matrix.

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

3-layer RGB resized array or matrix.

Examples

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