Structured Graph Variational Autoencoders for Indoor Furniture layout Generation

TL;DR

This paper introduces a structured graph variational autoencoder that generates realistic and diverse indoor furniture layouts based on room type and layout, effectively handling spatial constraints and relationships.

Contribution

The work presents a novel deep generative model that encodes spatial and semantic constraints as soft attributes on attributed graphs for indoor scene generation.

Findings

Generated scenes are diverse and consistent with room layouts.

The model effectively captures spatial relationships between objects.

Experiments demonstrate improved scene realism and diversity.

Abstract

We present a structured graph variational autoencoder for generating the layout of indoor 3D scenes. Given the room type (e.g., living room or library) and the room layout (e.g., room elements such as floor and walls), our architecture generates a collection of objects (e.g., furniture items such as sofa, table and chairs) that is consistent with the room type and layout. This is a challenging problem because the generated scene should satisfy multiple constrains, e.g., each object must lie inside the room and two objects cannot occupy the same volume. To address these challenges, we propose a deep generative model that encodes these relationships as soft constraints on an attributed graph (e.g., the nodes capture attributes of room and furniture elements, such as class, pose and size, and the edges capture geometric relationships such as relative orientation). The architecture consists of a graph encoder that maps the input graph to a structured latent space, and a graph decoder that generates a furniture graph, given a latent code and the room graph. The latent space is modeled with auto-regressive priors, which facilitates the generation of highly structured scenes. We also propose an efficient training procedure that combines matching and constrained learning. Experiments on the 3D-FRONT dataset show that our method produces scenes that are diverse and are adapted to the room layout.