image translation

shift the position of an image by adding/subtracting a value to/from the X or Y coordinates

Usage

translation(image, shift_rows = 0, shift_cols = 0, padded_value = 0)

Arguments

image

a matrix, data frame or 3-dimensional array where the third dimension is equal to 3

shift_rows

a positive or negative integer specifying the direction that the rows should be shifted

shift_cols

a positive or negative integer specifying the direction that the columns should be shifted

padded_value

either a numeric value or a numeric vector of length 3 (corresponding to RGB). If it's not equal to 0 then the values of the shifted rows or columns will be filled with the user-defined padded_value

Value

a matrix or 3-dimensional array where the third dimension is equal to 3

Details

If shift_rows is not zero then the image will be sifted row-wise (upsides or downsides depending on the sign). If shift_cols is not zero then the image will be sifted column-wise (right or left depending on the sign).

Examples

path = system.file("tmp_images", "1.png", package = "OpenImageR")

image = readImage(path)

res_tr = translation(image, shift_rows = 10, shift_cols = -10)