wahdan2003/LUPerson-NL

Dataset Summary

IMPORTANT NOTE dataset belongs to https://github.com/DengpanFu/LUPerson-NL , the effort here is building it from source and make it available

LUPerson-NL-Full is a large-scale dataset designed for Person Re-Identification (ReID) and computer vision tasks involving pedestrian analysis. It contains cropped images of individuals captured under various conditions.

which is typically used for pre-training deep learning models to recognize the same individual across different camera views or timeframes also can be user to pretrain an encoder to learn high quality features of humans .

• the "NL" is for noisy labels , there is 2 types of noise in this dataset
  • different ids can belong to the same person ( ids 1,2,3 can all belong to the same person)
  • not all the images assigned to an id belongs to it (some images of id 1 actually belong to another person of id 10 for example)

Supported Tasks and Leaderboards

• Person Re-Identification (ReID): The primary use case. Matching the person_id across different images.
• Pedestrian Detection/Attribute Recognition: Analyzing features of pedestrians (though explicit attribute labels are not included in this specific subset, the images can be used for self-supervised learning).
• Image Classification: Classifying images based on identity.

Dataset Structure

Data Instances

The dataset is massive and is best loaded using streaming=True. Each instance represents a single cropped image of a person.

Data Fields

• image: A PIL.Image object containing the cropped pedestrian image.
• person_id: A string representing the unique identity ID of the person. Images with the same person_id belong to the same individual.
• original_key: A unique identifier or filename string from the original source dataset, often encoding video/frame information (e.g., 00004_0017_0008741_00).

Usage Example

Because this dataset is large, it is highly recommended to use Streaming mode (Lazy Loading) to avoid downloading the entire dataset to disk.

import datasets
import torchvision.transforms as T
from PIL import Image

# 1. Load the dataset in streaming mode
# This establishes a connection without downloading the full data
dataset = datasets.load_dataset("wahdan2003/LUPerson-NL-Full", streaming=True)

# 2. Get the first item using an iterator
first_item = next(iter(dataset['train']))

# 3. Access Metadata
print(f"Person ID: {first_item['person_id']}")
print(f"Original Key: {first_item['original_key']}")
print(f"Image Size: {first_item['image'].size}") # Output: (width, height)

# 4. Transform for PyTorch (Example)
# Define a transform pipeline (Convert to Tensor)
transforms = T.Compose([
    T.ToTensor()
])

# Apply transform
image_tensor = transforms(first_item['image'])

print(f"Image Tensor Shape: {image_tensor.shape}") # Output: torch.Size([3, H, W])
print(f"Image Tensor Type: {image_tensor.dtype}")  # Output: torch.float32

# 5. Save the image to inspect it
# Note: .show() might fail in some headless Linux environments, so saving is safer.
first_item['image'].save("test_image.jpg")