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etaisella authored May 6, 2024
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<script src="https://cdn.jsdelivr.net/npm/swiper@9/swiper-bundle.min.js"></script>

<!-- title -->
<h1 class="ourh1" align="center">SPiC&middot;E <img class="inline-img" src=".\webpage_assets\images\chili.png" alt=""></h1>
<h2 class="ourh2" align="center"><h2_r>S</h2_r>tructural <h2_r>P</h2_r>riors <h2_r>i</h2_r>n 3D Diffusion Models using <h2_r>C</h2_r>ross-<h2_r>E</h2_r>ntity Attention</h2>
<h1 class="ourh1" align="center">Spice&middot;E <img class="inline-img" src=".\webpage_assets\images\chili.png" alt=""></h1>
<h2 class="ourh2" align="center"><h2_r>S</h2_r>tructural <h2_r>P</h2_r>riors <h2_r>i</h2_r>n 3D Diffusion using <h2_r>C</h2_r>ross-<h2_r>E</h2_r>ntity Attention</h2>

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<section class="authors_block">
Expand Down Expand Up @@ -271,14 +271,14 @@ <h2 align="center">Abstract</h2>
However, time-consuming optimization procedures are required for synthesizing each sample, hindering
their potential for democratizing 3D content creation. Conversely,
3D diffusion models now train on million-scale 3D datasets, yielding high-quality text-conditional 3D
samples within seconds. In this work, we present SPiC&middot;E - a neural network that adds structural guidance
samples within seconds. In this work, we present Spice&middot;E - a neural network that adds structural guidance
to 3D diffusion models, extending their usage beyond text-conditional generation. At its core, our framework
introduces a cross-entity attention mechanism that allows for multiple entities (in particular, paired input
and guidance 3D shapes) to interact via their internal representations within the denoising network.
We utilize this mechanism for learning task-specific structural priors in 3D diffusion models from auxiliary
guidance shapes. We show that our approach supports a variety of applications, including 3D stylization,
semantic shape editing and text-conditional abstraction-to-3D, which transforms primitive-based abstractions
into highly-expressive shapes. Extensive experiments demonstrate that SPiC&middot;E achieves SOTA performance over
into highly-expressive shapes. Extensive experiments demonstrate that Spice&middot;E achieves SOTA performance over
these tasks while often being considerably faster than alternative methods. Importantly, this is accomplished
without tailoring our approach for any specific task.
</p>
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our proposed cross-entity attention mechanism (in red). This mechanism mixes their latent representations by
carefully combining their Queries functions, allowing for learning task-specific structural priors while
preserving the model's generative capabilities.<br></br>
🔍 During inference, SPiC&middot;E receives a guidance shape in addition to a target text prompt, enabling the generation of 3D shapes
🔍 During inference, Spice&middot;E receives a guidance shape in addition to a target text prompt, enabling the generation of 3D shapes
(represented as either a neural radiance field or a signed texture field) conditioned on both high-level text directives and low-level
structural constraints.<br></br>
📋 See our paper for more details on our cross-entity attention mechanism and how we apply it for incorporating structural priors
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