Sample COCO dataset

sample.json

{
    "images": [{
        "file_name": "10.1.1.1.2006_3.bmp",
        "height": 1123,
        "width": 793,
        "id": "10.1.1.1.2006_3"
    }],
    "type": "instances",
    "annotations": [{
        "area": 4560,
        "iscrowd": 0,
        "bbox": [457, 709, 60, 76],
        "category_id": 1,
        "ignore": 0,
        "segmentation": [
            [457, 709, 457, 76, 60, 76, 60, 709]
        ],
        "image_id": "10.1.1.1.2006_3",
        "id": 1
    }, {
        "area": 4560,
        "iscrowd": 0,
        "bbox": [457, 709, 60, 76],
        "category_id": 2,
        "ignore": 0,
        "segmentation": [
            [457, 709, 457, 76, 60, 76, 60, 709]
        ],
        "image_id": "10.1.1.1.2006_3",
        "id": 2
    }],
    "categories": [{
        "supercategory": "none",
        "id": 1,
        "name": "column"
    }, {
        "supercategory": "none",
        "id": 2,
        "name": "row"
    }]
}