Datasets:
File size: 2,072 Bytes
541f082 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #!/usr/bin/env python3
"""Extract all or part of WildShadow-Video into paired frame directories."""
from __future__ import annotations
import argparse
import csv
import subprocess
from concurrent.futures import ThreadPoolExecutor, as_completed
from pathlib import Path
def extract(video: Path, destination: Path) -> None:
destination.mkdir(parents=True, exist_ok=True)
subprocess.run([
"ffmpeg", "-hide_banner", "-loglevel", "error", "-y", "-i", str(video),
"-vsync", "0", "-start_number", "0", str(destination / "rgb_%06d.png"),
], check=True)
def extract_row(root: Path, output: Path, row: dict[str, str]) -> None:
destination = output / row["split"] / row["dataset"] / row["clip_id"]
extract(root / row["shadow_video"], destination / "origin")
extract(root / row["shadow_free_video"], destination / "shadow_free")
def main() -> None:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--root", type=Path, default=Path(__file__).resolve().parents[1])
parser.add_argument("--output", required=True, type=Path)
parser.add_argument("--split", choices=("train", "test"))
parser.add_argument("--dataset", choices=("3dfront", "icity", "infinigen", "hssd"))
parser.add_argument("--workers", type=int, default=8)
args = parser.parse_args()
with (args.root / "manifests" / "clips.csv").open(newline="", encoding="utf-8") as handle:
rows = list(csv.DictReader(handle))
if args.split:
rows = [row for row in rows if row["split"] == args.split]
if args.dataset:
rows = [row for row in rows if row["dataset"] == args.dataset]
with ThreadPoolExecutor(max_workers=args.workers) as pool:
futures = [pool.submit(extract_row, args.root, args.output, row) for row in rows]
for index, future in enumerate(as_completed(futures), 1):
future.result()
if index % 50 == 0 or index == len(futures):
print(f"Extracted {index}/{len(futures)} clips", flush=True)
if __name__ == "__main__":
main()
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