{ "@context": { "@language": "en", "@vocab": "https://schema.org/", "citeAs": "cr:citeAs", "column": "cr:column", "conformsTo": "dct:conformsTo", "cr": "http://mlcommons.org/croissant/", "rai": "http://mlcommons.org/croissant/RAI/", "data": { "@id": "cr:data", "@type": "@json" }, "dataType": { "@id": "cr:dataType", "@type": "@vocab" }, "dct": "http://purl.org/dc/terms/", "examples": { "@id": "cr:examples", "@type": "@json" }, "extract": "cr:extract", "field": "cr:field", "fileProperty": "cr:fileProperty", "fileObject": "cr:fileObject", "fileSet": "cr:fileSet", "format": "cr:format", "includes": "cr:includes", "isLiveDataset": "cr:isLiveDataset", "jsonPath": "cr:jsonPath", "key": "cr:key", "md5": "cr:md5", "parentField": "cr:parentField", "path": "cr:path", "recordSet": "cr:recordSet", "references": "cr:references", "regex": "cr:regex", "repeated": "cr:repeated", "replace": "cr:replace", "sc": "https://schema.org/", "separator": "cr:separator", "source": "cr:source", "subField": "cr:subField", "transform": "cr:transform" }, "@type": "sc:Dataset", "name": "CT Slice Dataset", "description": "\n This dataset contains high-energy synchrotron CT data of two rock samples (F3_1_mono and F3_2_mono). For each sample, the following data is provided:\n\n - **Raw projections**: 1200 projection images, accompanied by 20 dark-field and flat-field measurements.\n - **Reconstructed slices**: Log-transformed and flat-field-corrected reconstructions, with additional ring artifact reduction applied.\n\n **Acquisition Parameters**:\n - Pixel size: 9.00 mm\n - Angular step: 0.15\u00b0\n - Sample-to-detector distance: 150 mm\n - Exposure time: 4 s\n - Number of projections: 1200\n - Energy: 24 keV\n - Filter: none\n - Center of rotation: \u221261 (F3_1), \u221262 (F3_2)\n - Ring removal level: 11 (F3_1), 11 (F3_2)\n - Projections were rotated 33\u00b0 counter-clockwise before reconstruction\n\n This dataset is designed for benchmarking CT reconstruction algorithms under practical and realistic acquisition conditions. ", "conformsTo": "http://mlcommons.org/croissant/1.0", "license": "https://creativecommons.org/licenses/by/4.0/", "url": "https://zenodo.org/records/15420527", "distribution": [ { "@type": "cr:FileObject", "@id": "f3_1_raw", "name": "F3_1_mono.zip", "description": "Raw projections for rock sample F3_1_mono, including 1200 projections, 20 dark fields, and 20 flat fields.", "contentUrl": "https://zenodo.org/records/15420527/files/F3_1_mono.zip?download=1", "encodingFormat": "application/zip", "sha256": "f1e38c7e37095c0eaa5378f0495276a794f65382d8141af549b7d8e1837983e1" }, { "@type": "cr:FileObject", "@id": "f3_1_recon", "name": "F3_1_mono_recon_corr.zip", "description": "Reconstructed slices of F3_1_mono after log-transform, flat-field correction, and ring artifact reduction.", "contentUrl": "https://zenodo.org/records/15420527/files/F3_1_mono_recon_corr.zip?download=1", "encodingFormat": "application/zip", "sha256": "a00a00892bba131cadde6e7d682f4ad889dfadb1aeac782e85035e2a46b224eb" }, { "@type": "cr:FileObject", "@id": "f3_2_raw", "name": "F3_2_mono.zip", "description": "Raw projections for rock sample F3_2_mono, including 1200 projections, 20 dark fields, and 20 flat fields.", "contentUrl": "https://zenodo.org/records/15420527/files/F3_2_mono.zip?download=1", "encodingFormat": "application/zip", "sha256": "1cc1835b73b482dbec0f9c6c9a21efd4400e3569edf6ac5b87cb5ea14e411002" }, { "@type": "cr:FileObject", "@id": "f3_2_recon", "name": "F3_2_mono_recon_corr.zip", "description": "Reconstructed slices of F3_2_mono after log-transform, flat-field correction, and ring artifact reduction.", "contentUrl": "https://zenodo.org/records/15420527/files/F3_2_mono_recon_corr.zip?download=1", "encodingFormat": "application/zip", "sha256": "3aa9004b0941f4f32635857bc0e6a375a6d27012936e87f32293d9ed2cc0da76" } ] }