render_bw: Render Black and White
In rayimage: Image Processing for Simulated Cameras

render_bw

R Documentation

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`	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


#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)

rayimage documentation built on June 12, 2026, 5:06 p.m.