{
  "$type": "site.standard.document",
  "description": "A vision-based navigation system (e.g., for aircraft on approach to a runway) captures via camera (102) 2D images of the runway environment in an image plane. The vision-based navigation system stores a constellation database (206) of runway features and their nominal 3D position information in a…",
  "path": "/patents/1398487",
  "publishedAt": "2026-04-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C11/04",
    "ROCKWELL COLLINS INC [US]"
  ],
  "textContent": "A vision-based navigation system (e.g., for aircraft on approach to a runway) captures via camera (102) 2D images of the runway environment in an image plane. The vision-based navigation system stores a constellation database (206) of runway features and their nominal 3D position information in a constellation plane. Image processors detect within the captured images 2D features potentially corresponding to the constellation features. The vision-based navigation system estimates optical pose of the camera (102) in the constellation plane by aligning the image plane and constellation plane into a common domain, e.g., via orthocorrection of detected image features into the constellation plane or reprojection of constellation features into the image plane. Based on the common-domain plane, the vision-based navigational system generates candidate correspondence maps (CMAP) of constellation features mapped to the image features with high-confidence error bounding, from which optical pose of the camera (102) or aircraft can be estimated.",
  "title": "VISION-BASED NAVIGATION SYSTEM INCORPORATING MODEL-BASED CORRESPONDENCE DETERMINATION WITH HIGH-CONFIDENCE AMBIGUITY IDENTIFICATION"
}