Collage Diffusion

• URL: http://arxiv.org/abs/2303.00262v2
• Date: Thu, 31 Aug 2023 09:01:35 GMT
• Title: Collage Diffusion
• Authors: Vishnu Sarukkai, Linden Li, Arden Ma, Christopher R\'e, Kayvon Fatahalian
• Abstract summary: Collage Diffusion harmonizes the input layers to make objects fit together. We preserve key visual attributes of input layers by learning specialized text representations per layer. Collage Diffusion generates globally harmonized images that maintain desired object characteristics better than prior approaches.
• Score: 17.660410448312717
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We seek to give users precise control over diffusion-based image generation by modeling complex scenes as sequences of layers, which define the desired spatial arrangement and visual attributes of objects in the scene. Collage Diffusion harmonizes the input layers to make objects fit together -- the key challenge involves minimizing changes in the positions and key visual attributes of the input layers while allowing other attributes to change in the harmonization process. We ensure that objects are generated in the correct locations by modifying text-image cross-attention with the layers' alpha masks. We preserve key visual attributes of input layers by learning specialized text representations per layer and by extending ControlNet to operate on layers. Layer input allows users to control the extent of image harmonization on a per-object basis, and users can even iteratively edit individual objects in generated images while keeping other objects fixed. By leveraging the rich information present in layer input, Collage Diffusion generates globally harmonized images that maintain desired object characteristics better than prior approaches.

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