{
  "name": "Mars Ingenuity",
  "key": "mars_ingenuity",
  "chunk_id": 3,
  "chunk_label": "Chunk 4",
  "component_id": 0,
  "camera_count": 76,
  "native_vertex_count": 1247958,
  "native_triangle_count": 2495072,
  "display_vertex_count": 22302,
  "display_triangle_count": 44593,
  "sparse_point_count": 27452,
  "display_transform": [
    [
      -0.16033356781246896,
      0.016369943778934266,
      -0.008563237648123395,
      0.8954439187945514
    ],
    [
      -0.018340140749080445,
      -0.13203375534158068,
      0.09098837152912916,
      0.38847867560115606
    ],
    [
      0.002223361339869363,
      0.09136339232369524,
      0.133026103728848,
      0.3398412995007481
    ],
    [
      0.0,
      0.0,
      0.0,
      1.0
    ]
  ],
  "scale": 0.16139441460539858,
  "source_mesh_file": "/mnt/data/metashape_v2/source/model_3.zip",
  "source_chunk_file": "/mnt/data/metashape_v2/source/chunk_2.zip",
  "source_sparse_file": "/mnt/data/metashape_v2/source/point_cloud.zip",
  "mesh_sha256": "ba697f59fc80488672575eede3c13345cc14a8f367898450c363a96263c299e6",
  "positive_depth_tracks": {
    "sampled": 1520,
    "positive": 1520
  },
  "ray_mesh_camera_hit_count": 0,
  "browser_triangle_count": 44593,
  "source_preview_count": 76,
  "notes": "Mesh-bearing 76-camera chunk, separate from the earlier 36-camera solve.",
  "original_project": "Mars Ingenuity.psx",
  "original_chunk_path": "01 SCAN FILE/Mars Ingenuity.files/3/chunk.zip",
  "original_mesh_path": "01 SCAN FILE/Mars Ingenuity.files/3/0/model/model.zip",
  "frustums": "Adjusted focal length, principal point and image dimensions; straight pinhole approximation. Lens distortion is not applied. Frustum depth is a display choice, not a measured scene quantity.",
  "trajectory": "Straight connectors follow numeric source-frame/timestamp labels; separate capture groups and very large jumps are not connected. Not independently measured flight telemetry.",
  "display_orientation": "Single rigid PCA leveling plus uniform scale applied to both cameras and geometry. Surface is not moved independently. Display-up is a presentation convention, not independently verified gravity.",
  "source_pixels": "Actual cached project thumbnails for MarsAerial and Ingenuity; matched original JPGs for Curiosity, reduced for display. Ingenuity frame labels indicate Topaz-enhanced imagery.",
  "mesh_reduction": "Movie meshes are display-reduced. Interactive WebGL and Canvas meshes are reduced further. Reduction and camera-icon scaling are documented, not claims of full-resolution rendering."
}