omnifall / STRUCTURE.md
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Restructured splits and reorganized readme.
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OmniFall Repository Structure

Directory Layout

parquet/                     Pre-built parquet files for all configs (used by load_dataset)
labels/                      CSV files containing temporal segment annotations
  caucafall.csv ... up_fall.csv   Staged dataset labels (7 columns)
  OOPS.csv                        OF-ItW labels (7 columns)
  of-syn.csv                      OF-Syn labels (19 columns: 7 core + 12 demographic)
splits/
  cs/                        Cross-subject splits (staged + OOPS)
  cv/                        Cross-view splits (staged + OOPS)
  syn/                       Synthetic splits (random, cross_age, cross_ethnicity, cross_bmi)
videos/metadata.csv          OF-Syn video-level metadata (12,000 videos)
data_files/
  omnifall-synthetic_av1.tar      OF-Syn video archive (12,000 AV1-encoded MP4s)
  syn_frame_wise_labels.tar.zst   OF-Syn frame-wise HDF5 labels
  oops_video_mapping.csv          Mapping from OOPS original filenames to OF-ItW names
prepare_oops_videos.py       Script to extract OOPS videos for OF-ItW
generate_parquet.py          Script to regenerate parquet files from labels + splits

Label Format

Each label file in labels/ contains temporal segment annotations:

path,label,start,end,subject,cam,dataset
path/to/clip,class_id,start_time,end_time,subject_id,camera_id,dataset_name
Column Type Description
path string Relative path to the video (dataset-specific root)
label int Class ID (0-15), see LABELS.md
start float Segment start time in seconds
end float Segment end time in seconds
subject int Subject ID (-1 for OF-ItW and OF-Syn)
cam int Camera view ID (-1 for OF-ItW and OF-Syn)
dataset string Source dataset name

OF-Syn Extended Labels

labels/of-syn.csv contains 12 additional demographic and scene metadata columns:

Column Values
age_group toddlers_1_4, children_5_12, teenagers_13_17, young_adults_18_34, middle_aged_35_64, elderly_65_plus
gender_presentation male, female
monk_skin_tone mst1 through mst10
race_ethnicity_omb white, black, asian, hispanic_latino, aian, nhpi, mena
bmi_band underweight, normal, overweight, obese
height_band short, avg, tall
environment_category indoor, outdoor
camera_shot static_wide, static_medium_wide
speed 24fps_rt, 25fps_rt, 30fps_rt, std_rt
camera_elevation eye, low, high, top
camera_azimuth front, rear, left, right
camera_distance medium, far

These fields are available in OF-Syn configs (of-syn, of-syn-cross-*, labels-syn, metadata-syn, framewise-syn). Cross-domain configs that mix sources use only the 7 core columns.

Split Format

Split files in splits/ list video paths included in each partition:

path
path/to/clip

Each video path maps to one or more temporal segments in the corresponding label file. The parquet configs contain the pre-merged result of joining split paths with labels.