EBImage (version 4.14.2)

floodFill: Region filling

Description

Fill regions in images.

Usage

floodFill(x, pt, col, tolerance=0)

Arguments

x

An Image object or an array.

pt

Coordinates of the start filling point.

col

Fill color. This argument should be a numeric for Grayscale images and an R color for Color images.

tolerance

Color tolerance used during the fill.

Value

An Image object or an array, containing the transformed version of x.

Details

Flood fill is performed using the fast scan line algorithm. Filling starts at pt and grows in connected areas where the absolute difference of the pixels intensities (or colors) remains below tolerance.

Examples

  x = readImage(system.file("images", "shapes.png", package="EBImage"))
  y = floodFill(x, c(67, 146), 0.5)
  display(y)

  y = channel(y, 'rgb')
  y = floodFill(y, c(48, 78), 'red')
  y = floodFill(y, c(156, 52), 'orange')	
  display(y)

  x = readImage(system.file("images", "sample.png", package="EBImage"))
  y = floodFill(x, c(226, 121), 1, tolerance=0.1)
  display(y)