{
  "name": "imageSize",
  "description": "size (in pixels) of the result",
  "fields": [
    {
      "name": "columns",
      "type": "double",
      "description": "number of columns of the output buffer"
    },
    {
      "name": "lines",
      "type": "double",
      "description": "number of lines of the output buffer"
    }
  ]
}