English

Appearance Codes using Joint Embedding Learning of Multiple Modalities

Computer Vision and Pattern Recognition 2023-11-21 v1 Artificial Intelligence

Abstract

The use of appearance codes in recent work on generative modeling has enabled novel view renders with variable appearance and illumination, such as day-time and night-time renders of a scene. A major limitation of this technique is the need to re-train new appearance codes for every scene on inference, so in this work we address this problem proposing a framework that learns a joint embedding space for the appearance and structure of the scene by enforcing a contrastive loss constraint between different modalities. We apply our framework to a simple Variational Auto-Encoder model on the RADIATE dataset \cite{sheeny2021radiate} and qualitatively demonstrate that we can generate new renders of night-time photos using day-time appearance codes without additional optimization iterations. Additionally, we compare our model to a baseline VAE that uses the standard per-image appearance code technique and show that our approach achieves generations of similar quality without learning appearance codes for any unseen images on inference.

Keywords

Cite

@article{arxiv.2311.11427,
  title  = {Appearance Codes using Joint Embedding Learning of Multiple Modalities},
  author = {Alex Zhang and Evan Dogariu},
  journal= {arXiv preprint arXiv:2311.11427},
  year   = {2023}
}
R2 v1 2026-06-28T13:25:32.713Z