patch: Patch colour

In facelab/webmorph: Reproducible Stimuli

Description

Get the median (or mean or user-defined function) colour value of a specified patch of pixels on an image. This is useful for matching background colours.

Usage

patch(
  img,
  x1 = 1,
  x2 = 10,
  y1 = 1,
  y2 = 10,
  color = c("hex", "rgb"),
  func = stats::median
)

Arguments

img	The image
x1	starting x pixel of patch
x2	ending x pixel of patch
y1	starting y pixel of patch
y2	ending y pixel of patch
color	The type of color to return (hex, rgb)
func	The function to apply to an array of rgba values to determine the central colour (defaults to median)

Value

hex or rgba color value

Examples

patch(demo_stim()[[1]]$img)

facelab/webmorph documentation built on April 11, 2021, 6:34 a.m.