Bbox & Polygon Type

Bbox & Polygon Format

• The JSON format follows the COCO dataset format by default.

---

Property	Format	Description
image_id	number (non-negative integer)	ID of the uploaded image
id	number (non-negative integer)	ID for identifying each annotation
category_id	number (non-negative integer)	ID of the registered category
model_metric	string	Model metric information per annotation
segmentation	[[x1, x2, y1, y2, … xn, yn],…,[x1, x2, y1, y2, … xn, yn]]	Coordinate information for polygon-type categories
bbox	[x1, y1, width, height]	Coordinate information for bbox-type categories

---

Format Example

[
    {
    "image_id": 973, 
        "id": 0, 
        "category_id": 1, 
        "model_metric": "confidencescore:0.32", 
        "segmentation": [ 
            [
                334.9532710280374,
                172.26168224299064, 
                471.32710280373834, 
                852.9345794392523, 
                ...
                511.99999999999994, 
                851.7383177570093, 
                447.4018691588785, 
                539.5140186915888
      ],
            ...
    ], 
        "bbox": []
    },
    
    ...
  
    {
    "image_id": 973, 
        "id": 1931, 
        "category_id": 3, 
        "model_metric": "confidencescore:0.17", 
        "segmentation": [], 
        "bbox": [
            334.9532710280374, 
            172.26168224299064, 
            177.04672897196252, 
            680.6728971962616 
        ]
    }
]

---

Invalid Code

Error Type	Description
Syntax error	The code is not in JSON syntax, ID is not a non-negative integer, or the template has an invalid key such as Bbox or ModelMetric.
Dupliacated Annotation ID	There are duplicate annotation IDs within the same key.
Image ID does not exist	An Image ID that was not uploaded exists.
Category ID does not exist	A category ID that has not been registered exists.
Negative number exists	There is a negative number in the Bbox or Polygon coordinates.
Invalid number of elements	There are elements other than four (x, y, width, height) in the Bbox.
Uncompleted pair	An odd number of elements exists in the Polygon, so coordinate pairs cannot be formed.
Less than 3 points	PThere are fewer than three coordinates in the Polygon.