Extent all images to the height of the image with maximal height.
images.same.height(images, background_color = "white")
a vector/stack of magick images, all with the same height.
a vector/stack of magick images. See magick::image_blank
or other methods to get one.
hex color string, the background color to use if the images have different sizes and one needs to be extended. Do not use color names like 'gray', which differ between R and magick.