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arXiv 2108.01073cs.CVcs.AI
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SDEDit:引导图像合成和编辑与随机微分方程

SDEdit: Guided Image Synthesis and Editing with Stochastic Differential Equations

Stanford University(斯坦福大学);Carnegie Mellon University(卡内基梅隆大学)

Chenlin Meng, Yutong He, Yang Song, Jiaming Song, Jiajun Wu, Jun-Yan Zhu, Stefano Ermon

摘要:

引导图像合成使日常用户能够以最小的努力创建和编辑照片般逼真的图像。关键的挑战是平衡对用户输入的忠实性(例如,手绘彩色笔划)和合成图像的真实感。现有的基于GAN的方法试图使用条件GANs或GAN反演来实现这种平衡,这是具有挑战性的,并且通常需要针对各个应用的额外训练数据或损失函数。为了解决这些问题,我们引入了一种新的图像合成和编辑方法,随机差分编辑(SDEDit),基于扩散模型生成先验,通过迭代去噪合成真实感图像通过随机微分方程(SDEDit)。给定一个带有任何类型用户指南的输入图像,SDEDit首先向输入添加噪声,然后通过降噪器对生成的图像进行降噪,以提高其真实感。SDEDit不需要特定任务的训练或倒置,可以自然地实现真实性和忠实性之间的平衡。根据人类感知研究,SDEDit在多个任务上的真实性和总体满意度得分上分别高达98.09%和91.72%,显著优于最先进的基于GAN的方法,包括基于笔划的图像合成和编辑以及图像合成。

英文摘要:

Guided image synthesis enables everyday users to create and edit photo-realistic images with minimum effort. The key challenge is balancing faithfulness to the user input (e.g., hand-drawn colored strokes) and realism of the synthesized image. Existing GAN-based methods attempt to achieve such balance using either conditional GANs or GAN inversions, which are challenging and often require additional training data or loss functions for individual applications. To address these issues, we introduce a new image synthesis and editing method, Stochastic Differential Editing (SDEdit), based on a diffusion model generative prior, which synthesizes realistic images by iteratively denoising through a stochastic differential equation (SDE). Given an input image with user guide of any type, SDEdit first adds noise to the input, then subsequently denoises the resulting image through the SDE prior to increase its realism. SDEdit does not require task-specific training or inversions and can naturally achieve the balance between realism and faithfulness. SDEdit significantly outperforms state-of-the-art GAN-based methods by up to 98.09% on realism and 91.72% on overall satisfaction scores, according to a human perception study, on multiple tasks, including stroke-based image synthesis and editing as well as image compositing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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