imager: px.flood – R documentation

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px.flood

Select a region of homogeneous colour

Description

Select pixels that are similar to a seed pixel. The underlying algorithm is the same as the bucket fill (AKA flood fill). Unlike with the bucket fill, the image isn't changed, the function simply returns a pixel set containing the selected pixels.

Usage

px.flood(im, x, y, z = 1, sigma = 0, high_connexity = FALSE)

Arguments

`im`	an image
`x`	X-coordinate of the starting point of the region to flood
`y`	Y-coordinate of the starting point of the region to flood
`z`	Z-coordinate of the starting point of the region to flood
`sigma`	Tolerance concerning neighborhood values.
`high_connexity`	Use 8-connexity (only for 2d images, default FALSE).

Details

Old name: selectSimilar (deprecated)

Examples

#Select part of a sail 
px <- px.flood(boats,x=169,y=179,sigma=.2) 
plot(boats)
highlight(px)

imager

Image Processing Library Based on 'CImg'

v0.42.10

LGPL-3

Authors

Simon Barthelme [aut], David Tschumperle [ctb], Jan Wijffels [ctb], Haz Edine Assemlal [ctb], Shota Ochi [cre]

Initial release