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metadata
pretty_name: STAR Relationship
tags:
  - scene-graph-generation
  - remote-sensing
  - polygon-annotation
configs:
  - config_name: default
    data_files:
      - split: train
        path: data/train-*
      - split: validation
        path: data/validation-*
      - split: test
        path: data/test-*
dataset_info:
  features:
    - name: id
      dtype: string
    - name: image
      dtype: string
    - name: width
      dtype: int32
    - name: height
      dtype: int32
    - name: polygons
      list:
        list:
          list: float32
          length: 2
    - name: labels
      list:
        class_label:
          names:
            '0': __background__
            '1': airplane
            '2': apron
            '3': arch_dam
            '4': baseball_diamond
            '5': basketball_court
            '6': boarding_bridge
            '7': boat
            '8': breakwater
            '9': bridge
            '10': car
            '11': car_parking
            '12': cement_concrete_pavement
            '13': chimney
            '14': coal_yard
            '15': containment_vessel
            '16': cooling_tower
            '17': crane
            '18': dock
            '19': engineering_vehicle
            '20': flood_dam
            '21': foundation_pit
            '22': gas_station
            '23': genset
            '24': goods_yard
            '25': gravity_dam
            '26': ground_track_field
            '27': intersection
            '28': lattice_tower
            '29': roundabout
            '30': runway
            '31': ship
            '32': ship_lock
            '33': smoke
            '34': soccer_ball_field
            '35': stadium
            '36': storehouse
            '37': substation
            '38': tank
            '39': taxiway
            '40': tennis_court
            '41': terminal
            '42': toll_gate
            '43': tower_crane
            '44': truck
            '45': truck_parking
            '46': unfinished_building
            '47': vapor
            '48': wind_mill
    - name: relations
      struct:
        - name: subject_index
          list: int64
        - name: object_index
          list: int64
        - name: predicate
          list:
            class_label:
              names:
                '0': __background__
                '1': adjacent
                '2': approach
                '3': around
                '4': away from
                '5': co-storage with
                '6': connect
                '7': converge
                '8': directly connected to
                '9': directly transmit electricity to
                '10': docked alongside with
                '11': docking at the different dock with
                '12': docking at the same breakwater with
                '13': docking at the same dock with
                '14': drive off
                '15': drive toward
                '16': driving alongside with
                '17': driving in the different lane with
                '18': driving in the opposite direction with
                '19': driving in the same direction with
                '20': driving in the same lane with
                '21': exhaust to
                '22': in the different parking with
                '23': in the same parking with
                '24': incorrectly parked on
                '25': indirectly connected to
                '26': indirectly transmit electricity to
                '27': intersect
                '28': isolatedly docked at
                '29': isolatedly parked on
                '30': not co-storage with
                '31': not docked alongside with
                '32': not parked alongside with
                '33': not run along
                '34': not working on
                '35': over
                '36': parallelly docked at
                '37': parallelly parked on
                '38': parked alongside with
                '39': parking in the different apron with
                '40': parking in the same apron with
                '41': pass across
                '42': pass through
                '43': pass under
                '44': randomly docked at
                '45': randomly parked on
                '46': run along
                '47': running along the different runway with
                '48': running along the different taxiway with
                '49': running along the same taxiway with
                '50': slightly emit
                '51': supply to
                '52': through
                '53': violently emit
                '54': within danger distance of
                '55': within different line of
                '56': within safe distance of
                '57': within same line of
                '58': working on
  splits:
    - name: train
      num_bytes: 10717079
      num_examples: 771
    - name: validation
      num_bytes: 4288100
      num_examples: 238
    - name: test
      num_bytes: 15840
      num_examples: 264
  download_size: 14671494
  dataset_size: 15021019

STAR Relationship

STAR Relationship 是一个遥感场景图生成(Scene Graph Generation,SGG)数据集。仓库将原始大尺寸图片与结构化标注分开保存:

  • 图片以普通文件形式位于 images/
  • train、validation 和 test 的结构化标注以 Parquet 保存。
  • Dataset 中的 image 字段是图片相对于仓库根目录的路径,不包含图片字节,也不会自动解码为 PIL 对象。

完整仓库约为 127 GB。使用 snapshot_download() 下载完整仓库前,请确认本地有足够的磁盘空间。

仓库结构

wliafe/star
├── README.md
├── images
│   ├── train
│   │   └── 0000.png
│   ├── validation
│   │   └── 0002.png
│   └── test
│       └── 0004.png
└── data
    ├── train-*.parquet
    ├── validation-*.parquet
    └── test-*.parquet

本地源数据中的 val 在 Hugging Face Dataset 中命名为 validation

数据字段

每行表示一张图片及其场景图标注:

  • id:图片文件名去除扩展名后的样本 ID。
  • image:仓库相对路径,例如 images/train/0000.png
  • widthheight:原图宽高。
  • polygons:对象 polygon 列表;每个点为 [x, y],保留原始坐标和顶点顺序。
  • labels:与 polygons 一一对应的对象类别。
  • relations.subject_index:关系主语在对象数组中的索引。
  • relations.object_index:关系宾语在对象数组中的索引。
  • relations.predicate:关系类别。

test split 只有图片,polygonslabels 和三个关系数组均为空。

下载并读取

repo_type="dataset"snapshot_download() 的参数;load_dataset() 直接使用仓库 ID,不需要传入 repo_type

from pathlib import Path

from datasets import load_dataset
from huggingface_hub import snapshot_download


repo_dir = Path(
    snapshot_download(
        repo_id="wliafe/star",
        repo_type="dataset",
    )
)
dataset = load_dataset("wliafe/star")

sample = dataset["train"][0]
image_path = repo_dir / sample["image"]

print(sample["id"])
print(sample["image"])
print(image_path)
assert image_path.is_file()

snapshot_download() 返回仓库快照根目录,因此将它与 sample["image"] 拼接即可得到本地图片路径。不要直接把相对路径解释为当前工作目录下的文件。

使用 Pillow

from PIL import Image


with Image.open(image_path) as image:
    image.load()
    print(image.size)

使用 OpenCV

import cv2


image = cv2.imread(str(image_path), cv2.IMREAD_UNCHANGED)
if image is None:
    raise RuntimeError(f"无法读取图片:{image_path}")
print(image.shape)

固定数据版本

如果训练或评测需要可复现的数据版本,请为下载和 Dataset 加载指定同一个完整 commit revision:

from pathlib import Path

from datasets import load_dataset
from huggingface_hub import snapshot_download


revision = "<full-commit-sha>"
repo_dir = Path(
    snapshot_download(
        repo_id="wliafe/star",
        repo_type="dataset",
        revision=revision,
    )
)
dataset = load_dataset("wliafe/star", revision=revision)

image_path = repo_dir / dataset["train"][0]["image"]

这样 Parquet 标注与原始图片始终来自同一个仓库版本。