{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ImageProperties",
  "type": "object",
  "description": "The properties of an image.",
  "properties": {
    "contentUri": {
      "type": "string",
      "description": "A URI to the image with a default lifetime of 30 minutes."
    },
    "sourceUri": {
      "type": "string",
      "description": "The source URI of the image."
    },
    "brightness": {
      "type": "number",
      "description": "The brightness effect of the image, from -1.0 to 1.0."
    },
    "contrast": {
      "type": "number",
      "description": "The contrast effect of the image, from -1.0 to 1.0."
    },
    "transparency": {
      "type": "number",
      "description": "The transparency effect of the image, from 0.0 to 1.0."
    },
    "angle": {
      "type": "number",
      "description": "The clockwise rotation angle of the image, in radians."
    }
  }
}