imager (version 0.42.7)

imgradient: Compute image gradient

Description

Light interface for get_gradient. Refer to get_gradient for details on the computation.

Usage

imgradient(im, axes = "xy", scheme = 3)

Arguments

im

an image of class cimg

axes

direction along which to compute the gradient. Either a single character (e.g. "x"), or multiple characters (e.g. "xyz"). Default: "xy"

scheme

numerical scheme (default '3', rotation invariant)

Value

an image or a list of images, depending on the value of "axes"

Examples

# NOT RUN {
grayscale(boats) %>% imgradient("x") %>% plot
imgradient(boats,"xy") #Returns a list
# }