get("#374") -- md5.calc

get("#348") -- rgb functions

w, h = img.width, img.height

tbl, i = {}, 0

h = 1 -- XXX

for y = 0, h-1 do

  for x = 0, w-1 do

    r, g, b = rgb(img.getInt(x, y))

    i=i+1 tbl[i]=string.char(r, g, b)

    if i % 10000 == 0 then

      print(i.." pixels converted")

    end

  end

end

s = table.concat(tbl)

hash = md5.calc(s)

return "Image Hash (partial): "..hash