Flip an Image

flip returns a flipped version of an Image around one or both of its axes.

Usage

flip(image, type = 0, target = "new", in_place = NULL)

Arguments

image

An Image object.

type

An integer indicating the type of flipping to be performed. If type = 0 (the default), the image is flipped around its x-axis; if type = 1 (or any positive value, then it is flipped around its y-axis; finally, if type = -1 (or any negative value, then it is flipped around both axes.)

target

The location where the results should be stored. It can take 3 values:

"new":

a new Image object is created and the results are stored inside (the default).

"self":

the results are stored back into image (faster but destructive).

An Image object:

the results are stored in another existing Image object. This is fast and will not replace the content of image but will replace that of target. Note that if target does not have the same dimensions, number of channels, and bit depth as image, nothing will be stored.

in_place

Deprecated. Use target instead.

Value

If target="new", the function returns an Image object. If target="self", the function returns nothing and modifies image in place. If target is an Image object, the function returns nothing and modifies that Image object in place.

See also

Image

Author

Simon Garnier, garnier@njit.edu

Examples

balloon <- image(system.file("sample_img/balloon1.png", package = "Rvision"))
balloon_flipped <- flip(balloon, -1)