{"url":"/dataset/ishape","name":"iShape","full_name":null,"description_markdown":"**iShape** is an irregular shape dataset for instance segmentation. iShape contains six sub-datasets with one real and five synthetics, each represents a scene of a typical irregular shape.","description_withheld":null,"homepage":"https://ishape.github.io","introduced_date":"2021-09-30","introduced_date_note":null,"introduced_by":{"paper":"/paper/ishape-a-first-step-towards-irregular-shape","title":"iShape: A First Step Towards Irregular Shape Instance Segmentation","first_author":"Lei Yang","url":null},"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"}],"tasks":[{"name":"Instance Segmentation","url":"/task/instance-segmentation","datasets_with_task":"/datasets/task/instance-segmentation"}],"languages":[],"variants":["iShape"],"data_loaders":[],"num_papers_in_archive":4,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[{"leaderboard":"/sota/instance-segmentation-on-ishape","task":"Instance Segmentation","dataset_variant":"iShape","rows":1,"metrics":["mask AP"],"first_row_in_archive_order":{"model":"ASIS(baseline)","paper":"/paper/ishape-a-first-step-towards-irregular-shape","metrics":{"mask AP":"62.93"},"code_links":[]},"note":"rows are the archive's own order at snapshot; nothing here re-ranks them"}],"papers_with_a_benchmark_row":[{"paper":"/paper/ishape-a-first-step-towards-irregular-shape","title":"iShape: A First Step Towards Irregular Shape Instance Segmentation","date":"2021-09-30","rows_on_this_dataset":1,"code_links":0,"syntology":null}],"syntology_totals":{"read_at":"2026-09-25T09:33:49+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."}