ytv2021Annotation.md

The label file follows MSCOCO's style in json format. We adapt the entry name and label format for video. The definition of json file is:

{
"info" : info,
"videos" : [video],
"annotations" : [annotation],
"categories" : [category],
}
video{
"id" : int,
"width" : int,
"height" : int,
"length" : int,
"file_names" : [file_name],
}
annotation{
"id" : int,
"video_id" : int,
"category_id" : int,
"segmentations" : [RLE or [polygon] or None],
"areas" : [float or None],
"bboxes" : [[x,y,width,height] or None],
"iscrowd" : 0 or 1,
}
category{
"id" : int,
"name" : str,
"supercategory" : str,
} \

The submission file is also in json format. The file should contain a list of predictions:

prediction{
"video_id" : int,
"category_id" : int,
"segmentations" : [RLE or [polygon] or None],
"score" : float,
} \