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[R] SPACE: Unsupervised Object-Oriented Scene Representation via Spatial Attention and Decomposition

[R] SPACE: Unsupervised Object-Oriented Scene Representation via Spatial Attention and Decomposition

Project Page: https://sites.google.com/view/space-project-page

Paper: https://openreview.net/pdf?id=rkl03ySYDH

Abstract: The ability to decompose complex multi-object scenes into meaningful abstractions like objects is fundamental to achieve higher-level cognition. Previous approaches for unsupervised object-oriented scene representation learning are either based on spatial-attention or scene-mixture approaches and limited in scalability which is a main obstacle towards modeling real-world scenes. In this paper, we propose a generative latent variable model, called SPACE, that provides a unified probabilistic modeling framework that combines the best of spatial-attention and scene-mixture approaches. SPACE can explicitly provide factorized object representations for foreground objects while also decomposing background segments of complex morphology. Previous models are good at either of these, but not both. SPACE also resolves the scalability problems of previous methods by incorporating parallel spatial-attention and thus is applicable to scenes with a large number of objects without performance degradations. We show through experiments on Atari and 3D-Rooms that SPACE achieves the above properties consistently in comparison to SPAIR, IODINE, and GENESIS.

Examples:

https://i.redd.it/xesd57isql941.gif

https://preview.redd.it/rguv24ibrl941.png?width=1280&format=png&auto=webp&s=470daf1c544df1d403a885d3db4a4415c3abb50e

https://preview.redd.it/gxa2jukosl941.png?width=1437&format=png&auto=webp&s=9ae306b2e0f397da4cb2d5c938a21c5ff8d390c6

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Toronto AI is a social and collaborative hub to unite AI innovators of Toronto and surrounding areas. We explore AI technologies in digital art and music, healthcare, marketing, fintech, vr, robotics and more. Toronto AI was founded by Dave MacDonald and Patrick O'Mara.