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Release cleanup (#132)

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Co-authored-by: Kashif Rasul <kashif.rasul@gmail.com>
Co-authored-by: Alexander Soare <alexander.soare159@gmail.com>
Co-authored-by: Adil Zouitine <adilzouitinegm@gmail.com>
Co-authored-by: Cadene <re.cadene@gmail.com>
This commit is contained in:
Simon Alibert
2024-05-06 03:03:14 +02:00
committed by GitHub
parent 6eaffbef1d
commit f5e76393eb
19 changed files with 312 additions and 237 deletions
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48
examples/1_load_lerobot_dataset.py
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@@ -14,6 +14,7 @@ The script ends with examples of how to batch process data using PyTorch's DataL
"""
from pathlib import Path
from pprint import pprint
import imageio
import torch
@@ -21,39 +22,36 @@ import torch
import lerobot
from lerobot.common.datasets.lerobot_dataset import LeRobotDataset
print("List of available datasets", lerobot.available_datasets)
# # >>> ['lerobot/aloha_sim_insertion_human', 'lerobot/aloha_sim_insertion_scripted',
# # 'lerobot/aloha_sim_transfer_cube_human', 'lerobot/aloha_sim_transfer_cube_scripted',
# # 'lerobot/pusht', 'lerobot/xarm_lift_medium']
print("List of available datasets:")
pprint(lerobot.available_datasets)
# Let's take one for this example
repo_id = "lerobot/pusht"
# You can easily load a dataset from a Hugging Face repositery
# You can easily load a dataset from a Hugging Face repository
dataset = LeRobotDataset(repo_id)
# LeRobotDataset is actually a thin wrapper around an underlying Hugging Face dataset (see https://huggingface.co/docs/datasets/index for more information).
# TODO(rcadene): update to make the print pretty
print(f"{dataset=}")
print(f"{dataset.hf_dataset=}")
# LeRobotDataset is actually a thin wrapper around an underlying Hugging Face dataset
# (see https://huggingface.co/docs/datasets/index for more information).
print(dataset)
print(dataset.hf_dataset)
# and provides additional utilities for robotics and compatibility with pytorch
print(f"number of samples/frames: {dataset.num_samples=}")
print(f"number of episodes: {dataset.num_episodes=}")
print(f"average number of frames per episode: {dataset.num_samples / dataset.num_episodes:.3f}")
# And provides additional utilities for robotics and compatibility with Pytorch
print(f"\naverage number of frames per episode: {dataset.num_samples / dataset.num_episodes:.3f}")
print(f"frames per second used during data collection: {dataset.fps=}")
print(f"keys to access images from cameras: {dataset.image_keys=}")
print(f"keys to access images from cameras: {dataset.camera_keys=}\n")
# Access frame indexes associated to first episode
episode_index = 0
from_idx = dataset.episode_data_index["from"][episode_index].item()
to_idx = dataset.episode_data_index["to"][episode_index].item()
# LeRobot datasets actually subclass PyTorch datasets so you can do everything you know and love from working with the latter, like iterating through the dataset.
# Here we grab all the image frames.
# LeRobot datasets actually subclass PyTorch datasets so you can do everything you know and love from working
# with the latter, like iterating through the dataset. Here we grab all the image frames.
frames = [dataset[idx]["observation.image"] for idx in range(from_idx, to_idx)]
# Video frames are now float32 in range [0,1] channel first (c,h,w) to follow pytorch convention.
# To visualize them, we convert to uint8 range [0,255]
# Video frames are now float32 in range [0,1] channel first (c,h,w) to follow pytorch convention. To visualize
# them, we convert to uint8 in range [0,255]
frames = [(frame * 255).type(torch.uint8) for frame in frames]
# and to channel last (h,w,c).
frames = [frame.permute((1, 2, 0)).numpy() for frame in frames]
@@ -62,9 +60,9 @@ frames = [frame.permute((1, 2, 0)).numpy() for frame in frames]
Path("outputs/examples/1_load_lerobot_dataset").mkdir(parents=True, exist_ok=True)
imageio.mimsave("outputs/examples/1_load_lerobot_dataset/episode_0.mp4", frames, fps=dataset.fps)
# For many machine learning applications we need to load the history of past observations or trajectories of future actions.
# Our datasets can load previous and future frames for each key/modality,
# using timestamps differences with the current loaded frame. For instance:
# For many machine learning applications we need to load the history of past observations or trajectories of
# future actions. Our datasets can load previous and future frames for each key/modality, using timestamps
# differences with the current loaded frame. For instance:
delta_timestamps = {
# loads 4 images: 1 second before current frame, 500 ms before, 200 ms before, and current frame
"observation.image": [-1, -0.5, -0.20, 0],
@@ -74,12 +72,12 @@ delta_timestamps = {
"action": [t / dataset.fps for t in range(64)],
}
dataset = LeRobotDataset(repo_id, delta_timestamps=delta_timestamps)
print(f"{dataset[0]['observation.image'].shape=}") # (4,c,h,w)
print(f"\n{dataset[0]['observation.image'].shape=}") # (4,c,h,w)
print(f"{dataset[0]['observation.state'].shape=}") # (8,c)
print(f"{dataset[0]['action'].shape=}") # (64,c)
print(f"{dataset[0]['action'].shape=}\n") # (64,c)
# Finally, our datasets are fully compatible with PyTorch dataloaders and samplers
# because they are just PyTorch datasets.
# Finally, our datasets are fully compatible with PyTorch dataloaders and samplers because they are just
# PyTorch datasets.
dataloader = torch.utils.data.DataLoader(
dataset,
num_workers=0,