{"url":"/dataset/uiis-dataset","name":"UIIS","full_name":"General Underwater Image Instance Segmentation dataset","description_markdown":"This is  the first general Underwater Image Instance Segmentation (UIIS) dataset containing 4,628 images for 7 categories with pixel-level annotations for underwater instance segmentation task","description_withheld":null,"homepage":"https://github.com/LiamLian0727/WaterMask","introduced_date":"2023-07-01","introduced_date_note":null,"introduced_by":{"paper":"/paper/watermask-instance-segmentation-for","title":"WaterMask: Instance Segmentation for Underwater Imagery","first_author":"Shijie Lian","url":null},"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"},{"name":"Texts","url":"/datasets/modality/texts"}],"tasks":[{"name":"2D Object Detection","url":"/task/2d-object-detection","datasets_with_task":"/datasets/task/2d-object-detection"},{"name":"Object Detection","url":"/task/object-detection","datasets_with_task":"/datasets/task/object-detection"},{"name":"Semantic Segmentation","url":"/task/semantic-segmentation","datasets_with_task":"/datasets/task/semantic-segmentation"},{"name":"2D Semantic Segmentation","url":"/task/2d-semantic-segmentation","datasets_with_task":"/datasets/task/2d-semantic-segmentation"},{"name":"Instance Segmentation","url":"/task/instance-segmentation","datasets_with_task":"/datasets/task/instance-segmentation"},{"name":"Segmentation","url":"/task/segmentation","datasets_with_task":"/datasets/task/segmentation"}],"languages":[{"name":"English","url":"/datasets/language/english"}],"variants":["UIIS"],"data_loaders":[],"num_papers_in_archive":9,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[{"leaderboard":"/sota/instance-segmentation-on-uiis","task":"Instance Segmentation","dataset_variant":"UIIS","rows":2,"metrics":["mAP","Prams（M）"],"first_row_in_archive_order":{"model":"WaterMask RCNN","paper":"/paper/watermask-instance-segmentation-for","metrics":{"Prams（M）":"67","mAP":"27.2"},"code_links":[{"title":"liamlian0727/watermask","url":"https://github.com/liamlian0727/watermask"}]},"note":"rows are the archive's own order at snapshot; nothing here re-ranks them"}],"papers_with_a_benchmark_row":[{"paper":"/paper/watermask-instance-segmentation-for","title":"WaterMask: Instance Segmentation for Underwater Imagery","date":"2023-01-01","rows_on_this_dataset":2,"code_links":1,"syntology":null}],"syntology_totals":{"read_at":"2026-09-24T18:15:14+00:00","papers_with_samples":0,"samples_harvested":0,"samples_ran":0,"samples_unverified":0,"pointer_only_for_licence":0,"papers_with_no_sample_that_ran":0,"note":"the per-paper counts above, summed; not a rate"},"papers_note":"The archive never published its papers-using-dataset list; these are papers with a leaderboard row on this dataset's benchmarks."}