get("#369") -- Magic Wand, optimized

get("#349") -- table functions

get("#380") -- hashImage

wandSize = 3

allrects = magicWandAll(img)

function stringtorect(s)

  local _, _, x1, y1, x2, y2 = string.find(s, "(%d+),%s*(%d+),%s*(%d+),%s*(%d+)")

  x1, y1, x2, y2 = tonumber(x1), tonumber(y1), tonumber(x2), tonumber(y2)

  return newRectangle(x1, y1, x2-x1, y2-y1)

end

result = {}

for s, _ in pairs(allrects) do

  r = stringtorect(s)

  cropped = {width=r.width, height=r.height,

    getInt = function(x, y) return img.getInt(x+r.x, y+r.y) end}

  hash = hashImage(cropped)

  table.insert(result, s.." -> "..hash)

end

result = table.concat(result, "|")

if result ~= '' then

  return "Magic Wand + hashes (wand size="..wandSize.."): "..result

end