{
  "$schema": "http://json-schema.org/draft-04/schema#",

  "type":"object",

  "definitions": {
    "fraction" : {
      "type": "number",
      "minimum": 0,
      "maximum": 1
    },
    "focal_point": {
      "type": "object",
      "properties": {
        "x" : { "$ref": "#/definitions/fraction" },
        "y" : { "$ref": "#/definitions/fraction" }
      },
      "required": ["x","y"]
    },
    "meta_data": {
      "type": "object",
      "properties": {
        "height" : { "type": "integer" },
        "width" : { "type": "integer" }
      },
      "required": ["height","width"]
    }
  },

  "properties": {
    "path": {"type": "string"},
    "focal_point": {"$ref":"#/definitions/focal_point"},
    "meta_data": {"$ref":"#/definitions/meta_data"}
  },
  "required": ["path"],
  "additionalProperties": false
}