Image processing module?

[Dirk Laurie <dirk.laurie@...>]

Has anyone written an easy-to-use Lua image processing module?
I don't mean bindings to a C library that forces you to think in C
while writing Lua, I mean a module with image and colormap
objects and a small number of functions eg:

img = image.read(filename)
autumn = image.cmap"autumn"
img:show(autumn)
img:write(filename)