Generate vector graphics from a textual caption

Overview

VectorAscent: Generate vector graphics from a textual description

Example

"a painting of an evergreen tree"

python text_to_painting.py --prompt "a painting of an evergreen tree" --num_iter 2500 --use_blob --subdir vit_rn50_useblob

a painting of an evergreen tree

Iterative generation of a painting of an evergreen tree

We rely on CLIP for its aligned text and image encoders, and diffvg, a differentiable vector graphics rasterizer. Differentiable rendering allows us to generate raster images from vector paths, but isn't provided textual descriptions. We use CLIP to score the similarity between raster graphics and textual captions. Using gradient ascent, we can then optimize for a vector graphic whose rasterization has high similarity with a user-provided caption, backpropagating through CLIP and diffvg to the vector graphics parameters. This project is partially inspired by Deep Daze, a caption-guided raster graphics generator.

Quick start

Requirements:

  • torch
  • torchvision
  • matplotlib
  • numpy
  • scikit-image
  • clip
  • diffvg

Install our dependencies and CLIP.

conda install --yes -c pytorch pytorch=1.7.1 torchvision cudatoolkit=11.0
pip install ftfy regex tqdm numpy matplotlib scikit-image
pip install git+https://github.com/openai/CLIP.git

Then follow these instructions to install diffvg.

Owner
Ajay Jain
Ajay Jain
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