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Maxima and Minima of an Image

Source: R/statistics.R
min.Rcpp_Image.Rd

Returns the maximum and minimum pixel values of an Image object. If the Image object has more than one channel, it returns the maximum and minimum of each channel.

Usage

# S3 method for Rcpp_Image
min(x, ...)

# S3 method for Rcpp_Image
max(x, ...)

# S3 method for Rcpp_Image
range(x, ...)

Arguments

x

An Image object.

...

Unused at the moment.

Value

min and max return a matrix with 1 row and nchan(x)

columns. range returns a matrix with 2 rows and nchan(x) columns.

See also

Image, minMaxLoc.

Author

Simon Garnier, garnier@njit.edu

Examples

balloon <- image(system.file("sample_img/balloon1.png", package = "Rvision"))
min(balloon)
#>     B  G  R
#> min 0 15 17
max(balloon)
#>       B   G   R
#> max 255 248 254