sRGB2LAB: Convert sRGB to LAB.

In GastonMauroDiaz/caiman: Canopy Image Analysis

Description

Wrapper function of sRGB and LAB that convert colors from sRGB to LAB.

Usage

sRGB2LAB(x, ...)

## S4 method for signature 'matrix'
sRGB2LAB(x)

## S4 method for signature 'numeric'
sRGB2LAB(x)

## S4 method for signature 'CanopyPhoto'
sRGB2LAB(x, ...)

Arguments

x	numeric, matrix or CanopyPhoto. Values must lying between 0 and 1.
...	Additional arguments as for writeRaster.

Value

Matrix, or CanopyPhoto.

Methods (by class)

• matrix: Each row should represent a color. Argument x must have three columns.

• numeric: Convert a single color from sRGB to LAB. Argument x must be of length three. The output is a matrix.

• CanopyPhoto: The output is a CanopyPhoto with layer names L, A and B.

See Also

normalize.

Examples

sRGB2LAB(c(0.5,0.7,0.5))
x <- sRGB2LAB(matrix(c(normalize(1:90, 1, 90)), ncol = 3))
str(x)
head(x)

x <- loadPhoto()
x <- normalize(x, 0, 255)
x <- sRGB2LAB(x)
x
plot(x)

x <- system.file("external/Black_caiman_Macrofotografie_2.jpg", package="caiman")
x <- loadPhoto(x)
plotRGB(x)
x <- normalize(x, 0, 255)
x <- sRGB2LAB(x)
plot(x)

GastonMauroDiaz/caiman documentation built on Jan. 22, 2022, 4:43 a.m.