| { |
| "metadata": { |
| "dataset_name": "PRISM", |
| "version": "1.1.0", |
| "total_frames": 48792, |
| "description": "Frame-level classification labels for the PRISM dataset. Labels cover weather condition, road type, surface material, and surface state. For folders with homogeneous surfaces, only default_label is provided. For folders with surface transitions, ordered_segments lists each contiguous segment in chronological order. Short transition zones are excluded with exact timestamp boundaries.", |
| "label_usage": { |
| "step_1": "If frame timestamp t falls within any timestamp_override [ts_start, ts_end], use that override's label.", |
| "step_2": "Otherwise, if ordered_segments exists, determine the segment by cumulative frame_count offsets.", |
| "step_3": "Otherwise, use default_label." |
| }, |
| "timestamp_unit": "Unix seconds with millisecond precision (e.g., 1770704845.634)", |
| "normalization_notes": { |
| "surface_material": "'ahsphalt' typo corrected to 'asphalt'; 'beigian' typo corrected to 'belgian_block'", |
| "surface_state": "'snow covered' normalized to 'snow_covered'" |
| } |
| }, |
| "class_definitions": { |
| "weather": { |
| "clear": "No precipitation, good visibility", |
| "overcast": "Cloudy sky, no precipitation", |
| "rainy": "Active rainfall during collection", |
| "snowy": "Active snowfall during collection", |
| "foggy": "Reduced visibility due to fog" |
| }, |
| "road_type": { |
| "urban": "City roads with intersections and traffic control", |
| "highway": "High-speed limited-access roads", |
| "rural": "Country roads outside urban areas", |
| "proving_ground": "Controlled test facility with specialty road profiles" |
| }, |
| "surface_material": { |
| "asphalt": "Standard asphalt (bituminous) pavement", |
| "concrete": "Portland cement concrete pavement", |
| "belgian_block": "Cobblestone or interlocking paving block surface", |
| "gravel": "Loose gravel road surface", |
| "other": "Other surface types such as plastic speed bumps" |
| }, |
| "surface_state": { |
| "dry": "No moisture present on the surface", |
| "damp": "Slight surface moisture with no standing water", |
| "wet": "Wet surface; standing water or active rain film possible", |
| "slush": "Partially melted snow or slush layer", |
| "snow_covered": "Surface covered by compacted or fresh snow" |
| } |
| }, |
| "folders": { |
| "0106_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1767667361_605", |
| "ts_end": "1767667454_496", |
| "label": { |
| "weather": "clear", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "0112_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1768200916_088", |
| "ts_end": "1768200990_782", |
| "label": { |
| "weather": "snowy", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "snow_covered" |
| } |
| } |
| ] |
| }, |
| "0119_1_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1768791654_524", |
| "ts_end": "1768791736_119", |
| "label": { |
| "weather": "overcast", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| } |
| ] |
| }, |
| "0119_2_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1768791794_516", |
| "ts_end": "1768791886_309", |
| "label": { |
| "weather": "overcast", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| } |
| ] |
| }, |
| "0120_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1768891166_060", |
| "ts_end": "1768891424_644", |
| "label": { |
| "weather": "clear", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "0124_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769223059_386", |
| "ts_end": "1769223287_575", |
| "label": { |
| "weather": "clear", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "slush" |
| } |
| } |
| ] |
| }, |
| "0128_1_dataset": { |
| "ordered_segments": [], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769586554_508", |
| "ts_end": "1769586600_597" |
| } |
| ] |
| }, |
| "0128_2_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769586754_988", |
| "ts_end": "1769586792_586", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "concrete", |
| "surface_state": "snow_covered" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769586743_507", |
| "ts_end": "1769586754_888" |
| } |
| ] |
| }, |
| "0128_3_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769587101_167", |
| "ts_end": "1769587148_464", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "concrete", |
| "surface_state": "damp" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769587094_478", |
| "ts_end": "1769587101_067" |
| } |
| ] |
| }, |
| "0128_4_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769587667_132", |
| "ts_end": "1769587750_327", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "other", |
| "surface_state": "damp" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769587645_534", |
| "ts_end": "1769587667_032" |
| } |
| ] |
| }, |
| "0128_5_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769587935_817", |
| "ts_end": "1769587949_517", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "belgian_block", |
| "surface_state": "snow_covered" |
| } |
| }, |
| { |
| "ts_start": "1769587950_316", |
| "ts_end": "1769587990_213", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "belgian_block", |
| "surface_state": "damp" |
| } |
| }, |
| { |
| "ts_start": "1769587997_213", |
| "ts_end": "1769588017_212", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "belgian_block", |
| "surface_state": "damp" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769587923_429", |
| "ts_end": "1769587935_717" |
| }, |
| { |
| "ts_start": "1769587949_617", |
| "ts_end": "1769587950_216" |
| }, |
| { |
| "ts_start": "1769587990_313", |
| "ts_end": "1769587997_113" |
| } |
| ] |
| }, |
| "0128_6_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769588187_002", |
| "ts_end": "1769588273_097", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "concrete", |
| "surface_state": "wet" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769588174_420", |
| "ts_end": "1769588186_902" |
| } |
| ] |
| }, |
| "0128_7_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769588445_087", |
| "ts_end": "1769588469_185", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "other", |
| "surface_state": "damp" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1769588427_489", |
| "ts_end": "1769588444_987" |
| } |
| ] |
| }, |
| "0129_1_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769664717_817", |
| "ts_end": "1769664826_713", |
| "label": { |
| "weather": "clear", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| } |
| ] |
| }, |
| "0129_2_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769665006_799", |
| "ts_end": "1769665053_495", |
| "label": { |
| "weather": "clear", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| } |
| ] |
| }, |
| "0129_3_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769665274_782", |
| "ts_end": "1769665333_678", |
| "label": { |
| "weather": "clear", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| } |
| ] |
| }, |
| "0129_4_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1769667479_644", |
| "ts_end": "1769667794_523", |
| "label": { |
| "weather": "clear", |
| "road_type": "rural", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| } |
| ] |
| }, |
| "0202_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1770014831_301", |
| "ts_end": "1770015153_197", |
| "label": { |
| "weather": "clear", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "slush" |
| } |
| } |
| ] |
| }, |
| "0210_1_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1770704711_842", |
| "ts_end": "1770704844_634", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| }, |
| { |
| "ts_start": "1770704849_334", |
| "ts_end": "1770704871_632", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "concrete", |
| "surface_state": "damp" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1770704844_734", |
| "ts_end": "1770704849_234" |
| } |
| ] |
| }, |
| "0210_2_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1770706762_717", |
| "ts_end": "1770706887_011", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "damp" |
| } |
| }, |
| { |
| "ts_start": "1770706891_710", |
| "ts_end": "1770706908_408", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "concrete", |
| "surface_state": "damp" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1770706887_111", |
| "ts_end": "1770706890_627" |
| } |
| ] |
| }, |
| "03181_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773812015_743", |
| "ts_end": "1773812039_641", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03182_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773812142_735", |
| "ts_end": "1773812160_134", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03183_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773812281_727", |
| "ts_end": "1773812298_625", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03184_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773812670_703", |
| "ts_end": "1773812698_901", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03185_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773812775_697", |
| "ts_end": "1773812804_594", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03186_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773812898_089", |
| "ts_end": "1773812937_687", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03187_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773813206_670", |
| "ts_end": "1773813238_868", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "03188_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773813323_663", |
| "ts_end": "1773813353_961", |
| "label": { |
| "weather": "foggy", |
| "road_type": "highway", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ] |
| }, |
| "0318_9_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773800343_420", |
| "ts_end": "1773800441_010", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773800445_009", |
| "ts_end": "1773800501_606", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "concrete", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773800510_405", |
| "ts_end": "1773800606_800", |
| "label": { |
| "weather": "rainy", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1773800441_110", |
| "ts_end": "1773800444_909" |
| }, |
| { |
| "ts_start": "1773800501_706", |
| "ts_end": "1773800510_305" |
| } |
| ] |
| }, |
| "0318_10_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773814243_504", |
| "ts_end": "1773814403_082", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773814407_481", |
| "ts_end": "1773814451_079", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "concrete", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773814457_978", |
| "ts_end": "1773814473_977", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1773814403_182", |
| "ts_end": "1773814407_381" |
| }, |
| { |
| "ts_start": "1773814451_179", |
| "ts_end": "1773814457_879" |
| } |
| ] |
| }, |
| "0318_11_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773819091_495", |
| "ts_end": "1773819192_188", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773819195_088", |
| "ts_end": "1773819229_986", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "concrete", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773819235_285", |
| "ts_end": "1773819241_786", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1773819192_288", |
| "ts_end": "1773819194_988" |
| }, |
| { |
| "ts_start": "1773819230_086", |
| "ts_end": "1773819235_185" |
| } |
| ] |
| }, |
| "0318_12_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773820774_295", |
| "ts_end": "1773820798_788", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773820802_088", |
| "ts_end": "1773820834_886", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "concrete", |
| "surface_state": "wet" |
| } |
| }, |
| { |
| "ts_start": "1773820841_486", |
| "ts_end": "1773820848_886", |
| "label": { |
| "weather": "overcast", |
| "road_type": "urban", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1773820798_888", |
| "ts_end": "1773820801_988" |
| }, |
| { |
| "ts_start": "1773820834_986", |
| "ts_end": "1773820841_386" |
| } |
| ] |
| }, |
| "0318_13_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1773806031_725", |
| "ts_end": "1773806142_325", |
| "label": { |
| "weather": "rainy", |
| "road_type": "rural", |
| "surface_material": "asphalt", |
| "surface_state": "wet" |
| } |
| } |
| ] |
| }, |
| "0327_1_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1774574534_598", |
| "ts_end": "1774574588_290", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "concrete", |
| "surface_state": "dry" |
| } |
| }, |
| { |
| "ts_start": "1774574588_390", |
| "ts_end": "1774574608_289", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
| } |
| } |
| ], |
| "ignored_frames": [ |
| { |
| "ts_start": "1774574534_598", |
| "ts_end": "1774574544_293" |
| }, |
| { |
| "ts_start": "1774574588_290", |
| "ts_end": "1774574604_289" |
| } |
| ] |
| }, |
| "0327_2_dataset": { |
| "ordered_segments": [ |
| { |
| "ts_start": "1774573423_764", |
| "ts_end": "1774573649_150", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "belgian_block", |
| "surface_state": "dry" |
| } |
| }, |
| { |
| "ts_start": "1774573649_250", |
| "ts_end": "1774573673_648", |
| "label": { |
| "weather": "clear", |
| "road_type": "proving_ground", |
| "surface_material": "asphalt", |
| "surface_state": "dry" |
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