Datasets:
File size: 2,239 Bytes
d632e09 | 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 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | #!/usr/bin/env python3
"""Locate and optionally load one synchronized Real4D frame."""
from __future__ import annotations
import argparse
import json
from pathlib import Path
def frame_paths(root: Path, subset: str, scene: str, trajectory: str, index: int):
if not 0 <= index < 300:
raise ValueError("frame index must be in [0, 299]")
scene_dir = root / subset / scene
number = index + 1
stem = f"{trajectory}_{number:06d}"
rgb = scene_dir / "images" / trajectory / f"{stem}.jpg"
depth = scene_dir / "depths" / trajectory / f"{stem}.jpg.geometric.png"
camera_json = scene_dir / "camera_params" / f"{trajectory}.json"
with camera_json.open("r", encoding="utf-8") as handle:
camera = json.load(handle)[index]
return rgb, depth, camera
def main() -> None:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("root", type=Path, help="Real4D dataset root")
parser.add_argument("subset", choices=("dynerf", "meetroom"))
parser.add_argument("scene")
parser.add_argument("trajectory", help="for example cam00_01")
parser.add_argument("index", type=int, help="zero-based frame index [0, 299]")
parser.add_argument(
"--inspect-depth",
action="store_true",
help="print depth range; requires Pillow and NumPy",
)
args = parser.parse_args()
rgb, depth, camera = frame_paths(
args.root.resolve(), args.subset, args.scene, args.trajectory, args.index
)
for path in (rgb, depth):
if not path.is_file():
raise FileNotFoundError(path)
print(f"RGB: {rgb}")
print(f"Depth: {depth}")
print("Camera:")
print(json.dumps(camera, indent=2))
if args.inspect_depth:
import numpy as np
from PIL import Image
depth_mm = np.asarray(Image.open(depth), dtype=np.uint16)
valid = depth_mm > 0
if valid.any():
values_m = depth_mm[valid].astype(np.float32) / 1000.0
print(
f"Valid depth: {valid.mean():.2%}; "
f"range: [{values_m.min():.3f}, {values_m.max():.3f}] m"
)
else:
print("Valid depth: 0%")
if __name__ == "__main__":
main()
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