{"url":"/dataset/btfdbb","name":"BTFDBB","full_name":"BTF Database Bonn","description_markdown":"Reflectance measurements of Bidirectional Texture Functions (BTFs)\r\n\r\nDatabase contains both flat samples:\r\n\r\n![](https://cg.cs.uni-bonn.de/typo3temp/pics/T_d3f3eb3fec.png)\r\n![](https://cg.cs.uni-bonn.de/typo3temp/pics/L_0446825446.png)\r\n![](https://cg.cs.uni-bonn.de/typo3temp/pics/S_1eb36192f6.png)\r\n\r\nas well as 3D geometry with texture mapped BTFs:\r\n\r\n![](https://cg.cs.uni-bonn.de/typo3temp/pics/g_6638002797.jpg)\r\n![](https://cg.cs.uni-bonn.de/typo3temp/pics/O_0f9dce16bf.jpg)\r\n\r\nfurthermore, there are some multispectral BTFs:\r\n\r\n![](https://cg.cs.uni-bonn.de/typo3temp/pics/p_cc0a283544.jpg)","description_withheld":null,"homepage":"https://cg.cs.uni-bonn.de/projects/btfdbb/","introduced_date":"2014-09-06","introduced_date_note":null,"introduced_by":null,"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"},{"name":"3D","url":"/datasets/modality/3d"},{"name":"3d meshes","url":"/datasets/modality/3d-meshes"},{"name":"Hyperspectral images","url":"/datasets/modality/hyperspectral-images"}],"tasks":[],"languages":[{"name":"English","url":"/datasets/language/english"}],"variants":["BTFDBB"],"data_loaders":[],"num_papers_in_archive":0,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[],"papers_with_a_benchmark_row":[],"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."}