AIMMO JSON form

Learn about the AIMMO JSON structure and Annotation field structure.

GT field

{
	"annotations": [], // Refer to the Annotation field by each Annotation type
  "attributes" : {},
  "label" : "Classification",
  "file_id" : "620aea6c1e3c3ccd9cfd8bc9",
  "scene_id" : "620aea6c1e3c3ccd9cfd8bc8",
  "filename" : "image (28).jpeg",
  "parent_path": "/batch_5/20220624/daytime",
  "last_modifier_id": "5fc7323e8511afbb60e8554b",
  "metadata": {
    "height": 1080,
    "width": 1920
  },
  "last_workers": {
    "라벨링": "5fc7323e8511afbb60e8554b",
    "검수": null,
    "최종 검수": null
  },
  "tags": ["car"],
	"parent_tags": ["1차작업"]
}

GT Field Definition

Name	Type	Description	Example
annotations	list[object]	Annotation information	See annotation field
attributes	object	When setting an attribute of the task type classification, it is the same as the attribute of the classification. When there is no classification	`{"attribute": "value"}`
label	string	It exists only when the task type is the classification. *If there is no classification in task type, the field does not exist	`"Classification"`
file_id	object	The ID of the file	`"620aea6c1e3c3ccd9cfd8bc9"`
scene_id	string	The ID of the scene file. *If the resource type is neither Sequence Image nor Point Cloud, the field does not exist	`"620aea6c1e3c3ccd9cfd8bc8"`
filename	string	File names. *In the case of the resource type Sequence Image or Point Cloud, this corresponds to a frame within the scene file	`"image (28).jpeg"`
parent_path	string	The parent path of the file	`"/batch_5/20220624/daytime"`
last_modifier_id	string	Last modifier id	`"5fc7323e8511afbb60e8554b"`
metadata	object	File metadata by each resource type. Image: image size. PointCloud, Text: empty value. Video:fps (frames)	`{"height": 1080, "width": 1920}`
last_workers	object	The last worker at each stage	`{"labeling": "5fc7323e8511afbb60e8554b"}`
tags	list[object]	The tag value of the file. *If you do not check whether the tag is included or not, the field does not exist	`["car"]`
parent_tags	list[object]	The tag value of the folder. *If you do not check whether the tag is included or not, the field does not exist	`["Primary task"]`

Classification

Classification can be used on all resource types (single image (vector), video, etc.)
Classification information will be stored in the GT field, not the "Annotation" field.

{
	"annotations": [],
	"attributes": {
		"occlusion": "Less than 30%"
  },
	"label": "car",
  
  "file_id" : "620aea6c1e3c3ccd9cfd8bc9",
  "filename" : "image (28).jpeg",
  "parent_path": "/batch_5/20220624/daytime",
  "last_modifier_id": "5fc7323e8511afbb60e8554b",
  "metadata": {
    "height": 1080,
    "width": 1920
  },
  "last_workers": {
    "라벨링": "5fc7323e8511afbb60e8554b",
    "검수": null,
    "최종 검수": null
  },
}

Field Definition

Name	Type	Description	Example
attributes	object	Attributes of task type Classification	`{"attribute_name": "attribute_value"}`
label	string	Task type Classification Classes	"car"

If you have any other inquiries, please get in touch with us at [email protected].

Annotation Field - common fields

{
	"annotations": [
		{
      "id": "1-48f557c0-3fff-4227-bd18-8574ff7f8ad0",
			"type": "bbox",
			"attributes": {
				  "is_parked": "y",
				  "occlusion": "30%",
			  },
      "track_id" : 1,
      "label": "car"
		}
	]
}

Annotation Field Definition

Name	Type	Description
id	string	The ID of the instance
type	string	Annotation types
attributes	object	Attributes of instance (attribute name, attribute value)
track_id	string	The instance number allocated to the same instance for each frame within the scene \n \n*If the resource type is not Sequence Image, the field does not exist
label	string	Classes of the instance

Single Image (Vector)

Bounding Box

{
	"annotations": [
		{
      "id": "1-48f557c0-3fff-4227-bd18-8574ff7f8ad0",
			"type": "bbox",
			"points": [[297, 307], [1169, 307], [1169, 530], [297, 530]],
			"label": "car",
			"attributes": {
				"is_parked": "y",
				"occlusion": "30%"
			}
		}
	]
}

Annotation Field Definition

Name	Type	Description
points	list of point	B-Box coordinates (top left, top right, bottom right, bottom left) \n \n*Coordinate system where the upper left corner of the image is (0,0)

Rotated B-box

{  
  "annotations": [  
    {  
      "id": "48f557c0-3fff-4227-bd18-8574ff7f8ad0",  
      "type": "obbox_v2",  
      "attributes": {},  
      "rect": [1461, 570, 9, 21],  
      "degree": 228.5,  
      "label": "vehicle"  
    }
  ]  
}

Annotation Field Definition

Name	Type	Description
rect	list of Int	x, y = starting point for labeling \nw = width of obbox_v2 \nh = height of obbox_v2
degree	float	Degree value (-89.5 ≤ degree ≤ 270) \n- degree (not radian) \t228.5

Keypoint

{
    "annotations": [
      {
        "id": "3-57db6fbe-cbc0-4a4a-a07b-0ef42f328977",
			  "type": "keypoint",
        "keypoints": {
					"PointLabel#1": [0,1],
					"PointLabel#2": [10,231],
					"PointLabel#3": [213,322]
				},
				"invisible_keys": ["PointLabel#2"],
				"label": "damaged",
				"attributes": {
          "confidence": "1",
					"size": "large"
        },
      }
		]  
}

Annotation Field Definition

Name	Type	Description
keypoints	list of point	key: Point name (set value), value: Coordinates (x, y) \nSet point name: Coordinates of the point (x, y)
invisible_keys	list of string	List of keypoint names that are checked with 'invisible'

Segmentation

{
    "annotations": [
      {
				"id": "1-9da0e293-d2db-47e5-8e57-0e43bc8b4ae9",
			  "type": "poly_seg",
        "points": [[747,937],[761,867],[783,780],[787,719],[793,652],[795,587],[780,575],[759,557],[783,588],[787,629],[773,768],[755,861],[744,923]],
				"label": "damaged",
				"attributes": {
          "confidence": "1",
					"size": "large"
        }
      }
		]  
}

Annotation Field Definition

Name	Type	Description	Example	Prerequisites
points	list of point	A list of all points within segmentation (in order)	[[747,937],[761,867],[783,780],[787,719]]	At least 3 points or more.

Polygon

{
    "annotations": [
      {
				"id": "1-20271808-9daa-4133-b338-024258d97a1a",
			  "type": "polygon",
        "points": [[747,937],[761,867],[783,780],[787,719],[793,652],[795,587],[780,575],[759,557],[783,588],[787,629],[773,768],[755,861],[744,923]],
				"label": "damaged",
				"attributes": {
          "confidence": "1",
					"size": "large"
        }
      }
		]  
}

Annotation Field Definition

Name	Type	Description	Example	Prerequisites
points	list of point	list of all points in the polygon (in order)	[[x1, y1], [x2,y2], [x3,y3]]	At least 3 points or more.

Polyline

{
    "annotations": [
      {
				"id": "1-49c4f45d-f90e-4e15-aada-572ed3a4142e",
			  "type": "polyline",
        "points": [[747,937],[761,867],[783,780]],
				"label": "yellow_line",
				"attributes": {
          "confidence": "1"
        }
      }
		]  
}

Annotation Field Definition

Name	Type	Description	Example	Prerequisites
points	list of point	list of all points in the polyline (in order)	[[747,937],[761,867],[783,780]]	At least 2 points or more

3D Cuboid

{
    "annotations": [
      {
				"id": "1-8831725a-868c-4e48-a7f7-dea7c4c7be35",
			  "type": "cuboid_2d",
        "points": [[0,0],[100,0],[100,100],[0,100],
									 [200,200],[300,200],[300,300],[200,300]],
				"label": "damaged",
				"attributes": {
          "confidence": "1",
					"size": "large"
        },
      }
		]  
}

Annotation Field Definition

Name	Type	Description
points	list of point	8 hexahedral points \nIn the order of Front bbox ⇒ Rear bbox

Flat Cuboid

{
  "annotations": [
    {
      "id": "6-d971dc14-c030-418f-b1e3-260c45313160",
      "type": "cuboid_plain",
      "attributes": {},
      "points": [[1150,365],[1564,365],[1564,591],[1150,591]],
      "label": "차량"
    }
}

Annotation Field Definition

Name	Type	Description
points	list of point	Bbox when there are 4 points \nWhen there are 6 points, it has 4 Bbox points + 2 points in the 5th position and 6th position in the order of clicking the mouse

Classification

{
	"attributes": {
			"occlusion": "30%",
	},
  "label": "car"
}

Annotation Field Definition

Name	Type	Description
attributes	object	Detailed attribute information
label	string	Class information

Single Image (Pixel)

Segmentation

{
	"annotations": [
		{
      "id": "1-5ca0fc23-027c-4a50-a8d3-0107529bcb91",
			"type": "segmentation_mask",
      "mask": "23F456T232F234T", //RLE
      "bound": [[100, 200], [400, 300]],
			"attributes": {
				  "occlusion": "30%",
			  },
      "label": "car"
		}
	]
}

Annotation Field Definition

Name	Type	Description	Example	Prerequisites
mask	string	Binary Mask (custom RLE encoding)	23F456T232F234T
bound	list[point]	Boundary information of the mask ([top left coordinate, bottom right coordinate])	[[100, 100], [300, 500]]	It must have 2 points

Point Cloud (LiDAR, RADAR)

3D Cuboid

{
	"annotations": [
		{
			"id": "efed27a1-ac3e-4541-af0c-7abf8be7ae78",
      "type": "cuboid",
			"geometry": [4.760000000000003, 1.92, 1.96],
			"position": [13.075738648931754, 4.250296285924759, -0.8600000000000001],
			"rotation": [0, 0, 3.6739180754480634],
      "pointCount": 6126,
			"label": "pedestrian",
			"attributes": {
				"direction": "forward",
				"is_walking": "y"
			}
	]
}

Annotation Field Definition

Name	Type	Description
geometry	list of float	length, width, height
position	list of float	x, y, z central point
rotation	list of float	- PI/2 ≤ yaw < PI + PI/2 \n- Unit: radian \n- The degree of the rotation range: 0 to 269.5 degrees, 0 to -90 degrees \n \n[x rotation, y rotation, z rotation (yaw)] \nEach rotation value is expressed as rad \nRotation range: - PI/2 ≤ yaw < PI + PI/2
pointCount	int	한 instance 내에 들어있는 포인트 개

Segmentation

{
	"annotations": [
		{
			"id": "efed27a1-ac3e-4541-af0c-7abf8be7ae78",
      "type": "lasso",
			"indices": "111534-3-57-132-3-57-132-3-57-36-96-3",
			"label": "pedestrian",
			"attributes": {
				"direction": "forward",
				"is_walking": "y"
			}
	]
}

Annotation Field Definition

Name	Type	Description	Example
indices	string	This is an index array of point cloud points that are encoded as a string	"34122-192-150-42-150-42-150-42-150-42-150-42-150-42-150-42-150-42-150-42"

Video

FrameRange

{
	"annotations": [
		{
			"id": "1-82338d78-46b3-4901-971c-a6faff5d10d1",
      "type": "frameRange",
			"startFrame": 3028,
			"endFrame": 3159,
			"startTime": 101.03437770103437,
			"endTime": 105.23858190523858,
			"label": "dance",
			"attributes": {
				"subclass": "samba"
		  }
		}
	]
}

Annotation Field Definition

Name	Type	Description	Example	Prerequisites
startFrame	integer	Frame number of starting section	3028
endFrame	integer	Frame number at the end of the section	3159	endFrame cannot be smaller than startFrame
startTime	float	Starting time of the section	101.03437770103437
endFrame	float	End time of section	105.23858190523858	endTime is not available to be faster than startTime

Text

Entity

{
	"annotations": [
		{
			"id": "1-36e5c504-edd8-4028-9ed1-70497152447e",
			"type": "entity",
			"label": "회사명",
			"text": "에이모",
			"start": 10,
			"end": 20,
			"attributes": {
				"hand_writed": "y"
			}
	  }
}

Annotation Field Definition

Name	Type	Description	Example	Prerequisites
text	string	The selected string	"AIMMO"
start	int	The starting index value of the selected string	10
end	int	The end index value of the selected string	15	The end is not available to be less than or equal to start

If you have any other inquiries, please get in touch with us at [email protected].

Updated about 1 month ago