| --- |
| license: other |
| language: |
| - en |
| task_categories: |
| - text-classification |
| - image-segmentation |
| pretty_name: OpenScan |
| size_categories: |
| - 10K<n<100K |
| tags: |
| - 3d-scene-understanding |
| - open-vocabulary |
| - scannet200 |
| - benchmark |
| - aaaai-2026 |
| --- |
| |
| # OpenScan |
|
|
| OpenScan is a benchmark for generalized open-vocabulary 3D scene understanding. It extends ScanNet200-style scene understanding with eight object-attribute aspects: material, affordance, property, type, manner, synonyms, requirement, and element. |
|
|
| This dataset mirror contains the OpenScan validation annotations and evaluation ground-truth files for the AAAI 2026 paper. |
|
|
| ## Files |
|
|
| | File | Description | |
| | --- | --- | |
| | `openscan_val_raw.json` | Raw validation annotations with one record per scene object. | |
| | `openscan_label_mapping/` | Expanded TSV label mappings for all eight OpenScan aspects. | |
| | `openscan_val_gt/` | Processed validation ground-truth files for evaluation. | |
|
|
| The raw validation JSON contains 10,388 annotated objects from 312 validation scenes. The processed ground truth contains 312 scene files for each of the eight OpenScan aspects. |
|
|
| ## Annotation Format |
|
|
| Each raw annotation record has this structure: |
|
|
| ```json |
| { |
| "scene_id": "scene0011_00", |
| "object_id": "0", |
| "object_name": "floor", |
| "material": "stone", |
| "affordance": "stand", |
| "property": "other", |
| "type": "land", |
| "manner": "other", |
| "synonyms": "other", |
| "requirement": "other", |
| "element": "other" |
| } |
| ``` |
|
|
| ## Usage |
|
|
| Load the raw validation annotation table with `datasets`: |
|
|
| ```python |
| from datasets import load_dataset |
| |
| dataset = load_dataset( |
| "json", |
| data_files="hf://datasets/garrying/OpenScan/openscan_val_raw.json", |
| split="train", |
| ) |
| ``` |
|
|
| Download the processed validation ground truth for evaluation: |
|
|
| ```bash |
| hf download garrying/OpenScan --repo-type dataset --local-dir . --include "openscan_val_gt/**" |
| ``` |
|
|
| The `openscan_val_gt/` directory contains: |
|
|
| ```text |
| gt_affordance/ |
| gt_element/ |
| gt_manner/ |
| gt_material/ |
| gt_property/ |
| gt_requirement/ |
| gt_synonyms/ |
| gt_type/ |
| ``` |
|
|
| ## Project |
|
|
| - Project page: https://youjunzhao.github.io/OpenScan/ |
| - Code and evaluation: https://github.com/YoujunZhao/OpenScan |
| - Paper: https://arxiv.org/abs/2408.11030 |
|
|
| ## Citation |
|
|
| ```bibtex |
| @article{zhao2024openscan, |
| title={OpenScan: A Benchmark for Generalized Open-Vocabulary 3D Scene Understanding}, |
| author={Zhao, Youjun and Lin, Jiaying and Ye, Shuquan and Pang, Qianshi and Lau, Rynson WH}, |
| journal={arXiv preprint arXiv:2408.11030}, |
| year={2024} |
| } |
| ``` |
|
|
