Keypoints

Exports keypoints (if applicable) in global coordinates (right-handed XYZ).

This data may be used in conjunction with ex/intrinsic matrices.

Keypoints are provided in a separate keypoints.json file in global XYZ coordinates (right-handed, Z-up) as well as in image coordinates in the coco_annotations.json file, in standard COCO format. In the separate keypoints.json file, keypoints are associated to their parent objects, as indicated by the name of the parent object. In the example below, there are two objects: "person" and "person.001", each with two keypoints. The "location" property indicates the keypoint's location in global, right-handed XYZ coordinates.

{
    "person": [
        {
            "parent": "person",
            "index": 0,
            "location": [
                -0.1828928291797638,
                -27.593069076538086,
                1.648327350616455
            ]
        },
        {
            "parent": "person",
            "index": 1,
            "location": [
                -0.13354526460170746,
                -27.549772262573242,
                1.674281358718872
            ]
        }
    ],
    "person.001": [
        {
            "parent": "person.001",
            "index": 0,
            "location": [
                13.46673583984375,
                24.82083511352539,
                1.6136791706085205
            ]
        },
        {
            "parent": "person.001",
            "index": 1,
            "location": [
                13.472820281982422,
                24.868288040161133,
                1.6519790887832642
            ]
        }
    ]
}