Dataset Card for emoji-liif

This dataset contains 3,165 high-resolution emoji images that have been upscaled using the LIIF (Learning Implicit Image Function) method. The images were generated from original Apple emoji assets and are provided for research and academic purposes under fair use.

Dataset Details

Dataset Description

The emoji-liif dataset consists of upscaled emoji images generated from Apple's emoji assets. Each image has been enlarged to 2000x2000 pixels using the LIIF method, which provides high-quality upscaling while preserving image details.

Curated by: Louis Maddox (lmmx)
Language(s) (NLP): Not applicable - this is an image dataset
License: Research/Academic Use Only (Fair Use)

Dataset Sources

Repository: https://github.com/lmmx/emoji-liif
Paper [optional]: Original LIIF paper: "Learning Continuous Image Representation with Local Implicit Image Function"

Uses

Direct Use

This dataset is intended for:

Research on image super-resolution techniques
Comparative analysis of upscaling methods
Academic study of emoji representation and scaling
Benchmark dataset for super-resolution algorithms

Out-of-Scope Use

This dataset should not be used for:

Commercial purposes
Distribution of emoji images as part of products or services
Any use that violates Apple's copyright on the original emoji designs

Dataset Structure

The dataset consists of 3,165 PNG image files, each with the following characteristics:

Resolution: 2000x2000 pixels
Format: PNG
Organization: Single directory containing all images
Source: Upscaled from Apple emoji assets (iOS 14.2 72x72 and OSX 10.15 160x160)

Dataset Creation

Curation Rationale

The dataset was created to demonstrate the capabilities of the LIIF upscaling method on emoji images, providing high-quality enlarged versions while preserving the original design details.

Source Data

Data Collection and Processing

The images were generated through the following process:

Original emoji assets were extracted from Apple's iOS 14.2 and OSX 10.15 systems
Images were upscaled using the LIIF method
Final images were saved as 2000x2000 pixel PNGs

Who are the source data producers?

The original emoji designs are created by Apple Inc. The upscaled versions were produced using the LIIF method by the repository maintainer.

Personal and Sensitive Information

This dataset does not contain any personal or sensitive information. The images are emoji characters that are publicly available as part of operating systems.

Bias, Risks, and Limitations

The dataset only includes Apple emoji designs and may not be representative of other emoji styles
The upscaling process may introduce artifacts or slight modifications to the original designs
The dataset is limited to fair use applications due to copyright considerations

Recommendations

Users should:

Respect the fair use limitations of the dataset
Acknowledge Apple's copyright of the original emoji designs
Cite both the dataset and the LIIF paper when using this data in research

Citation

If you use this dataset, please cite:

@misc{emoji-liif,
  author = {Maddox, Louis},
  title = {emoji-liif: Emoji upsampling workflow using LIIF},
  year = {2024},
  publisher = {GitHub},
  url = {https://github.com/lmmx/emoji-liif}
}

Dataset Card Contact

For questions about this dataset, please open an issue on the GitHub repository: https://github.com/lmmx/emoji-liif/issues