Remove padding (border) from image

Removes a border of pixels from around an image. Inverse of img_pad().

Usage

img_unpad(img, n = 10)

Arguments

img

Matrix or array. Padded image

n

Integer. Number of pixels to remove from each side. Default 10

Value

Unpadded image with dimensions decreased by 2*n in each direction

Examples

if (FALSE) { # \dontrun{
img <- img_load("leaf.png")
img_padded <- img_pad(img, n = 20)
img_back <- img_unpad(img_padded, n = 20)
identical(img, img_back)  # TRUE
} # }