format.md

#JSON format

{
    "winner_id": u8,
    "subjects":
        {
            "buyer": {
                "human_id": u8,
                "frames":
                    {
                        "joints21": [f32; 73],
                        "body_normal": [f32; 2],
                        "face_normal": [f32; 2],
                    },
                "initTrans": f32,
                "initRot": f32
            },
            "leftSeller": {
                "human_id": u8,
                "frames":
                    {
                        "joints21": [f32; 73],
                        "body_normal": [f32; 2],
                        "face_normal": [f32; 2],
                    },
                "initTrans": f32,
                "initRot": f32
            },
            "rightSeller": {
                "human_id": u8,
                "frames":
                    {
                        "joints21": [f32; 73],
                        "body_normal": [f32; 2],
                        "face_normal": [f32; 2],
                    },
                "initTrans": f32,
                "initRot": f32
            }
            "prediction<insert_name>": {
                "human_id": u8,
                "frames":
                    {
                        "joints21": [f32; 73],
                        "body_normal": [f32; 2],
                        "face_normal": [f32; 2],
                    },
                "initTrans": f32,
                "initRot": f32
            }
        }
}

index to body part map

bone	joint1 - joint2
[1, 5]	lHip - rHip
[0, 9]	BodyCenter - Torso
[9, 10]	Torso - Chest
[10, 11]	Chest - Neck
[11, 12]	Neck - Nose
[5, 6]	rHip - rKnee
[1, 2]	lHip - lKnee
[6, 7]	rKnee - rAnkle
[2, 3]	lKnee - lAnkle
[13, 17]	lShoulder - rShoulder
[17, 18]	rShoulder - rElbow
[13, 14]	lShoulder - lElbow
[14, 15]	lElbow - lWrist
[18, 19]	rElbow - rWrist