metadata

license: mit
language:
  - en
pipeline_tag: image-to-video
tags:
  - GAN
  - U-Net

Model Card: Ayo_Generator for GIF Frame Generation

Model Overview

The Ayo_Generator model is a GAN-based architecture designed to generate animated sequences, such as GIFs, from a single input image. The model uses a combination of CNN layers, upsampling, and attention mechanisms to produce smooth, continuous motion frames from a static image input. The architecture is particularly suited for generating simple animations (e.g., jumping, running) in pixel-art styles or other low-resolution images.

Intended Use

The Ayo_Generator can be used in creative projects, animation generation, or for educational purposes to demonstrate GAN-based sequential generation. Users can input a static character image and generate a sequence of frames that simulate motion.

Applications

Sprite Animation for Games: Generate small animated characters from a single pose.
Educational Demos: Teach GAN-based frame generation and image-to-motion transformations.
GIF Creation: Turn still images into animated GIFs with basic motion patterns.

How It Works

Input Image Encoding: The input image is encoded through a series of convolutional layers, capturing spatial features.
Frame-Specific Embedding: Each frame is assigned an embedding that indicates its position in the sequence.
Sequential Frame Generation: Each frame is generated sequentially, with the generator network using the previous frame as context for generating the next.
Attention and Skip Connections: These features help retain spatial details and produce coherent motion across frames.

Model Architecture

Encoder: Uses multiple convolutional layers to encode the input image into a lower-dimensional feature space.
Dense Layers: Compress and embed the encoded information to capture relevant features while reducing dimensionality.
Decoder: Upsamples the compressed feature representation, generating frame-by-frame outputs.
Attention and Skip Connections: Improve coherence and preserve details, helping to ensure continuity across frames.

Training Data

The Ayo_Generator was trained on a custom dataset containing animated characters and their associated motion frames. The dataset includes:

Character Images: Base images from which motion frames were generated.
Motion Frames: Frames for each character to simulate movement, such as walking or jumping.

Data Preprocessing

Input images are preprocessed to 128x128 resolution and normalized to a [-1, 1] scale. Frame embeddings are incorporated to help the model understand sequential order, with each frame index converted into a unique embedding vector.

Sample GIF Generation

Given an input image, this example code generates a series of frames and stitches them into a GIF.

import imageio

input_image = ...  # Load or preprocess an input image as needed
generated_frames = [generator(input_image, tf.constant([i])) for i in range(10)]

# Save as GIF
with imageio.get_writer('generated_animation.gif', mode='I') as writer:
    for frame in generated_frames:
        writer.append_data((frame.numpy() * 255).astype(np.uint8))

Evaluation Metrics

The model was evaluated based on:

MSE Loss (Pixel Similarity): Measures pixel-level similarity between real and generated frames.
Perceptual Loss: Captures higher-level similarity using VGG19 features for realism in generated frames.
Temporal Consistency: Ensures frames flow smoothly by minimizing the difference between adjacent frames.

Future Improvements

Potential improvements for the Ayo Generator include:

Enhanced Temporal Consistency: Using RNNs or temporal loss to improve coherence.
Higher Resolution Output: Modifying the model to support 256x256 or higher.
Additional Character Variation: Adding data variety to improve generalization.

Ethical Considerations

The Ayo Generator is intended for creative and educational purposes. Users should avoid:

Unlawful or Offensive Content: Misusing the model to create or distribute harmful animations.
Unauthorized Replication of Identities: Ensure that generated characters respect IP and individual likeness rights.

Model Card Author

This Model Card was created by [Minseok Kim]. For any questions, please contact me at [email protected] or https://github.com/minnnnnnnn-dev

Acknowledgments

I would like to extend my gratitude to [Junyoung Choi] https://github.com/tomato-data for valuable insights and assistance throughout the development of the Ayo Generator model. Their feedback greatly contributed to the improvement of this project.

Additionally, special thanks to the [Team Six Guys] for providing helpful resources and support during the research process.