get("#348") -- rgb and bright

get("#137") -- split

y, w, h = img.height+62-83, 21, 21

x = img.width-w

if y < 0 or y+h > img.height then return "No Aibo" end

aibo = [[

WWWWWWWWWWWWWWWWWWWWW

WWWW????????OOWWWWWWW

WWWW????????OZOWWWWWW

WWWW????????OZZOWWWWW

WWWW????????OZPZOWWWW

WWWW????????OZRPZOOOO

WWWW????????OZTRPZZZZ

????????????OZTTPZZZZ

????????????WOZTZZZZZ

????????OOOOWWOZZZZZZ

???????OZZZZOWOZ?????

WWWW??OZZZZYTOXZ?????

WWWW?OZZZZXTZOWZ?????

WWWWPWZZZZXYZOTYZZZZX

WWWWOWZZZZZZZVOVXXZXU

WWWWOXZWZZZZZVVOUXZZA

WWWWOXZVZZZZZOVVOTZZA

WWWWOXZVZZZZZZOVSOXXX

WWWWOXZRYZYYZZZOOAUUA

WWWWOWZPVXSXZZZZXXAAO

WWWWOYZVQURYZXXZYXXAO

]]

aibo = split(aibo, "\n")

while x >= 0 do

  total, count = 0, 0

  for yy=y, y+h-1 do

    --s = ""

    line = aibo[yy-y+1]

    for xx=x, x+w-1 do

      pix = img.getInt(xx, yy)

      --s = s..num2hex(pix, 6).." "

      --s = s..(isBright(pix) and "*" or ".")

      c = line:sub(xx-x+1, xx-x+1)

      if c ~= '?' then

        b = math.floor(bright(rgb(pix))*25+0.5)

        --print("c", c)

        lb = string.byte(c)-string.byte("A")

        diff = math.abs(b-lb)

        --s = s..string.char(string.byte("A")+diff)

        total = total+diff

        count = count+1

      --else

      --  s = s.."?"

      end

    end

    --print(s)

  end

  sim = math.floor(100*(1-total/(count*25))+0.5)

  --print("Aibo similarity at x="..x..": "..sim.."%")

  if sim >= 99 then

    return "Aibo: "..x..", "..y..", "..x+w..", "..y+h

  end

  x = x-1

end

return "No Aibo"