MULAN: A Multi Layer Annotated Dataset for Controllable Text-to-Image Generation

• URL: http://arxiv.org/abs/2404.02790v1
• Date: Wed, 3 Apr 2024 14:58:00 GMT
• Title: MULAN: A Multi Layer Annotated Dataset for Controllable Text-to-Image Generation
• Authors: Petru-Daniel Tudosiu, Yongxin Yang, Shifeng Zhang, Fei Chen, Steven McDonagh, Gerasimos Lampouras, Ignacio Iacobacci, Sarah Parisot,
• Abstract summary: We introduce MuLAn: a novel dataset comprising over 44K MUlti-Layer-wise RGBA decompositions. MuLAn is the first photorealistic resource providing instance decomposition and spatial information for high quality images. We aim to encourage the development of novel generation and editing technology, in particular layer-wise solutions.
• Score: 54.64194935409982
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Text-to-image generation has achieved astonishing results, yet precise spatial controllability and prompt fidelity remain highly challenging. This limitation is typically addressed through cumbersome prompt engineering, scene layout conditioning, or image editing techniques which often require hand drawn masks. Nonetheless, pre-existing works struggle to take advantage of the natural instance-level compositionality of scenes due to the typically flat nature of rasterized RGB output images. Towards adressing this challenge, we introduce MuLAn: a novel dataset comprising over 44K MUlti-Layer ANnotations of RGB images as multilayer, instance-wise RGBA decompositions, and over 100K instance images. To build MuLAn, we developed a training free pipeline which decomposes a monocular RGB image into a stack of RGBA layers comprising of background and isolated instances. We achieve this through the use of pretrained general-purpose models, and by developing three modules: image decomposition for instance discovery and extraction, instance completion to reconstruct occluded areas, and image re-assembly. We use our pipeline to create MuLAn-COCO and MuLAn-LAION datasets, which contain a variety of image decompositions in terms of style, composition and complexity. With MuLAn, we provide the first photorealistic resource providing instance decomposition and occlusion information for high quality images, opening up new avenues for text-to-image generative AI research. With this, we aim to encourage the development of novel generation and editing technology, in particular layer-wise solutions. MuLAn data resources are available at https://MuLAn-dataset.github.io/.

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