objects

An object represents information about physical entities that exist within a given scene, such as people, cars, or lane markings in the real world.

An object key is composed of various pieces of information, including the object's name, type, and annotation location (like a bounding box location array). Each key uses a unique UUID as its identifier.

The dynamic information related to an object, denoted by ${OBJECT_UUID}, is described under a specific frame. This information encompasses data that changes over time, such as the location, velocity, and orientation of the object within the scene.

Hint

The objects infomation under a specific frame are used to describe dynamic objects. The infomation changes over time, such as the location, velocity, and orientation of the object within the scene.

Schema

Example

"objects":{
    "8a45cee7-52a2-4c18-8cdb-8c81d4a0c164": {
        "object_data": {
            "bbox": [{
                    "name": "bbox_shape",
                    "val": [134, 900, 600, 460],
                    "stream": "camera1",
                    "attributes": {
                        "boolean": [{
                                "name": "fully_visible",
                                "val": false
                            }
                        ]
                    }
                }
            ]
        }
    },
    "6e259eb2-be4a-11ed-afa1-0242ac120002": {
        "object_data": {
            "mat": [{
                    "name": "confidence_scores",
                    "height": 4,
                    "width": 3,
                    "channels": 2,
                    "data_type": "float",
                    "val": [0.98, 0.76, 0.21, 0.98, 0.34, 0.87, 0.98, 0.76, 0.21, 0.98, 0.34, 0.87, 0.98, 0.76, 0.21, 0.98, 0.34, 0.87, 0.98, 0.76, 0.21, 0.98, 0.34, 0.87],
                    "stream": "camera1"
            }]
        }
    },
    "cf66fbb2-30b7-43b9-96db-85f70b3619f9": {...}
}

#Objects {}

name	description	type	required
${OBJECT_UUID}	The id of the object. It uses UUID32 as a key.	object	true, unique
type	The object class name. (ex. people)	string	true
name	The unique name of this object. (ex. Amy)	string	false
object_data	It refers to information used to describe a particular object such as annotation shapes, attributes, or metrics. The ${OBJECT_TYPE} can be found in the accompanying documentation: ➤ bbox ➤ cuboid ➤ poly2d ➤ point2d ➤ binary ➤➤ attributes	object	true

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Use Case

More infomation on

pageUse Case

bbox

To describe a bbox dataset with one camera sensor:

pagebbox

bbox + cuboid (3D)

To describe a dataset with one camera sensor (bbox annotation) and one lidar sensor (cuboid annotation) in the coordinate system of iso8855-1:

pagebbox + cuboid (3d)

semantic segmentation

To describe a semantic segmentation dataset with one camera sensor:

pagesemantic segmetation