mix2images: Insert one image into another.
In nunesmatt/LS2Wstat: A Multiscale Test of Spatial Stationarity for LS2W Processes

Description Usage Arguments Details Value Author(s) References Examples

Image A is re-sized to a specified proportion of Image B, then inserted into Image B at a given position.

1	mix2images(imageA, imageB, prop = 0.25, pos = "e")

`imageA`	The first image which is resized and placed inside the second image.
`imageB`	The second image, into which the first is placed.
`prop`	The proportion of Image B to be taken up by Image A.
`pos`	The exact position of image A in image B. Possible options are "a", "b", "c", "d", "e" which corresponds to (a) top-right, (b) bottom-right, (c) top-left, (d) bottom-left and (e) centred. A more exact location may be specified by inputting `pos=c(x,y)`, which represents the position in pixels from the top-left of the image (i.e. `c(x,y)` puts Image A `x` pixels down and `y` pixels across from the top-left corner of Image B.)

This function first of all crops Image A to be a given proportion of Image B and then inserts it into image B at the specified location. If image B is too small for the size of image A required then the whole of image A is placed in image B. Both must be dyadic in length and square images.

ImageB

A matrix with the specified values selected exchanged to those of Image A.

Sarah L. Taylor

Taylor, S.L., Eckley, I.A., and Nunes, M.A. (2014) A Test of Stationarity for Textured Images. Technometrics, 56 (3), 291-301.

# Generate 2 images.
#
ImageA <- matrix(rnorm(256^2), nrow=256, ncol=256)
ImageB <- matrix(rnorm(256^2, sd=2.8), nrow=256, ncol=256)
#
# Insert Image A into Image B at a proportion of 0.25
#
MixImaImb <- mix2images(ImageA, ImageB, prop=0.25, pos="e")
#