get("#137") -- split

get("#339") -- signature maker

result = otherresults["#336"] or error("Need result of #336")
_, _, s = string.find(result, ": (.+)")
if s == nil then return end
parts = split(s, ", ")

local orig = img
tbl = {}

for _, segment in ipairs(parts) do
  x1, x2 = unpack(split(segment, "-"))
  y1, y2 = 0, orig.height
  
  -- crop the image
  
  img = {
    width = x2-x1, height = y2-y1,
    getInt = function(x, y) return orig.getInt(x+x1, y+y1) end
  }
  
  -- get segment signature
  
  w, h = img.width, img.height
  hor, vert = getSegmentSignature(true), getSegmentSignature(false)
  if hor ~= nil and vert ~= nil then
    table.insert(tbl, hor.."-"..vert)
  end
end

return table.concat(tbl, " ")