{
  "schemaVersion": 1,
  "session": "2026-09-07 Harris Hill CCW \u2014 larger sources",
  "annotationProvenance": "Codex source-only visual garment-landmark estimates recorded 2026-09-14 before the new dataset Vision run. Prior low-resolution outputs have been seen; this is not independent human ground truth. Uncertainty is 25 source pixels; null torsoLength prevents normalized accuracy claims. Pairing inferred from consecutive screenshot filenames and visual match to earlier P01-P06, not synchronized capture times.",
  "pairs": [
    {
      "id": "P01",
      "file": "Screenshot 2026-09-14 at 10.11.49\u202fAM.png",
      "riders": [
        {
          "role": "subject",
          "rider": "James",
          "file": "Screenshot 2026-09-14 at 10.11.49\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1748,
            "height": 1056
          },
          "crop": {
            "x": 570,
            "y": 300,
            "width": 530,
            "height": 460
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 760,
                "y": 592
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 869,
                "y": 675
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        },
        {
          "role": "reference",
          "rider": "Damien",
          "file": "Screenshot 2026-09-14 at 10.12.03\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1747,
            "height": 1056
          },
          "crop": {
            "x": 420,
            "y": 320,
            "width": 510,
            "height": 440
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 566,
                "y": 694
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 688,
                "y": 713
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        }
      ]
    },
    {
      "id": "P02",
      "file": "Screenshot 2026-09-14 at 10.12.17\u202fAM.png",
      "riders": [
        {
          "role": "subject",
          "rider": "James",
          "file": "Screenshot 2026-09-14 at 10.12.31\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1747,
            "height": 1057
          },
          "crop": {
            "x": 560,
            "y": 55,
            "width": 725,
            "height": 835
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 1164,
                "y": 544
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 1139,
                "y": 728
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        },
        {
          "role": "reference",
          "rider": "Damien",
          "file": "Screenshot 2026-09-14 at 10.12.17\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1746,
            "height": 1057
          },
          "crop": {
            "x": 540,
            "y": 275,
            "width": 610,
            "height": 625
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 1045,
                "y": 675
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 947,
                "y": 836
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        }
      ]
    },
    {
      "id": "P03",
      "file": "Screenshot 2026-09-14 at 10.12.44\u202fAM.png",
      "riders": [
        {
          "role": "subject",
          "rider": "James",
          "file": "Screenshot 2026-09-14 at 10.13.00\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1745,
            "height": 1057
          },
          "crop": {
            "x": 505,
            "y": 265,
            "width": 550,
            "height": 435
          },
          "annotations": [
            {
              "name": "right_elbow",
              "point": {
                "x": 739,
                "y": 440
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 646,
                "y": 495
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        },
        {
          "role": "reference",
          "rider": "Damien",
          "file": "Screenshot 2026-09-14 at 10.12.44\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1747,
            "height": 1056
          },
          "crop": {
            "x": 560,
            "y": 405,
            "width": 660,
            "height": 480
          },
          "annotations": [
            {
              "name": "right_elbow",
              "point": {
                "x": 900,
                "y": 481
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 749,
                "y": 485
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_elbow",
              "point": {
                "x": 1088,
                "y": 739
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        }
      ]
    },
    {
      "id": "P04",
      "file": "Screenshot 2026-09-14 at 10.13.19\u202fAM.png",
      "riders": [
        {
          "role": "subject",
          "rider": "James",
          "file": "Screenshot 2026-09-14 at 10.13.37\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1746,
            "height": 1058
          },
          "crop": {
            "x": 705,
            "y": 350,
            "width": 375,
            "height": 480
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 1047,
                "y": 647
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 985,
                "y": 765
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_elbow",
              "point": {
                "x": 836,
                "y": 491
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 735,
                "y": 546
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph. Crop revision after first run followed background rider: exclude background head/torso at image left. Some image-left boot pixels now outside crop; do not assess ankle from this crop. Source landmark annotations unchanged."
        },
        {
          "role": "reference",
          "rider": "Damien",
          "file": "Screenshot 2026-09-14 at 10.13.19\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1747,
            "height": 1058
          },
          "crop": {
            "x": 655,
            "y": 440,
            "width": 555,
            "height": 410
          },
          "annotations": [
            {
              "name": "right_elbow",
              "point": {
                "x": 935,
                "y": 505
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 804,
                "y": 494
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_elbow",
              "point": {
                "x": 1134,
                "y": 724
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 1026,
                "y": 806
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        }
      ]
    },
    {
      "id": "P05",
      "file": "Screenshot 2026-09-14 at 10.20.12\u202fAM.png",
      "riders": [
        {
          "role": "subject",
          "rider": "James",
          "file": "Screenshot 2026-09-14 at 10.20.27\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1747,
            "height": 1059
          },
          "crop": {
            "x": 615,
            "y": 360,
            "width": 450,
            "height": 445
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 1030,
                "y": 646
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 971,
                "y": 752
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_elbow",
              "point": {
                "x": 830,
                "y": 485
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 724,
                "y": 551
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        },
        {
          "role": "reference",
          "rider": "Damien",
          "file": "Screenshot 2026-09-14 at 10.20.12\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1745,
            "height": 1061
          },
          "crop": {
            "x": 670,
            "y": 425,
            "width": 540,
            "height": 425
          },
          "annotations": [
            {
              "name": "right_elbow",
              "point": {
                "x": 949,
                "y": 504
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 805,
                "y": 487
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_elbow",
              "point": {
                "x": 1109,
                "y": 707
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 1014,
                "y": 786
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        }
      ]
    },
    {
      "id": "P06",
      "file": "Screenshot 2026-09-14 at 10.20.43\u202fAM.png",
      "riders": [
        {
          "role": "subject",
          "rider": "James",
          "file": "Screenshot 2026-09-14 at 10.21.00\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1747,
            "height": 1057
          },
          "crop": {
            "x": 1190,
            "y": 290,
            "width": 420,
            "height": 435
          },
          "annotations": [
            {
              "name": "left_elbow",
              "point": {
                "x": 1563,
                "y": 568
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 1514,
                "y": 676
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_elbow",
              "point": {
                "x": 1413,
                "y": 427
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 1285,
                "y": 510
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Select white helmet/silver SV650 on image right, excluding red-bike foreground rider."
        },
        {
          "role": "reference",
          "rider": "Damien",
          "file": "Screenshot 2026-09-14 at 10.20.43\u202fAM.png",
          "panel": {
            "x": 0,
            "y": 0,
            "width": 1746,
            "height": 1058
          },
          "crop": {
            "x": 605,
            "y": 310,
            "width": 485,
            "height": 410
          },
          "annotations": [
            {
              "name": "right_elbow",
              "point": {
                "x": 803,
                "y": 425
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "right_knee",
              "point": {
                "x": 725,
                "y": 446
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_elbow",
              "point": {
                "x": 991,
                "y": 585
              },
              "uncertaintyPixels": 25
            },
            {
              "name": "left_knee",
              "point": {
                "x": 909,
                "y": 666
              },
              "uncertaintyPixels": 25
            }
          ],
          "torsoLength": null,
          "annotationNote": "Provisional source-only estimates under riding gear. Unlisted joints not assessed; no claim of invisibility. Selected intended rider from original photograph."
        }
      ]
    }
  ]
}