{
  "$type": "site.standard.document",
  "description": "The present invention relates to a method for calibrating an altitude sensing stereo vision device (122) of an unmanned aerial vehicle (100), wherein the method comprises: arranging the unmanned aerial vehicle to take off from ground (G) and ascend; deriving at least one first altitude value…",
  "path": "/patents/1410653",
  "publishedAt": "2022-12-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C23/00",
    "EVERDRONE AB [SE]"
  ],
  "textContent": "The present invention relates to a method for calibrating an altitude sensing stereo vision device (122) of an unmanned aerial vehicle (100), wherein the method comprises: arranging the unmanned aerial vehicle to take off from ground (G) and ascend; deriving at least one first altitude value (10a-15a) from the stereo vision device and obtaining at least one corresponding second altitude value (10b-15b) from another device (123) of the unmanned aerial vehicle during the ascent (1) of the unmanned aerial vehicle; recording the derived at least one first altitude value and the obtained at least one corresponding second altitude value as calibration data; deriving an additional first altitude value from the stereo vision device while the unmanned aerial vehicle flies a route; determining a second altitude value corresponding to the derived additional first altitude value based on the recorded calibration data; and adjusting the derived additional first altitude value based on the determined second altitude value.",
  "title": "METHOD FOR CALIBRATING AN ALTITUDE SENSING STEREO VISION DEVICE OF A UAV"
}