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Byeongsu Sim

6 accepted papers

2025

Derivative-Free Diffusion Manifold-Constrained Gradient for Unified XAI

CVPR 2025poster

Gradient-based methods are a prototypical family of "explainability for AI" (XAI) techniques, especially for image-based models. However, they (1) require white-box access to models, (2) are vulnerable to adversarial attacks, and (3) produce attributions that lie off the image manifold, leading to e…

2025

PLADIS: Pushing the Limits of Attention in Diffusion Models at Inference Time by Leveraging Sparsity

ICCV 2025poster

Diffusion models have shown impressive results in generating high-quality conditional samples using guidance techniques such as Classifier-Free Guidance (CFG). However, existing methods often require additional training or neural function evaluations (NFEs), making them incompatible with guidance-di…

2022

Come-Closer-Diffuse-Faster: Accelerating Conditional Diffusion Models for Inverse Problems Through Stochastic Contraction

CVPR 2022poster

Diffusion models have recently attained significant interest within the community owing to their strong performance as generative models. Furthermore, its application to inverse problems have demonstrated state-of-the-art performance. Unfortunately, diffusion models have a critical downside - they a…

Cited by 273PDFcodeScholar
2022

Improving Diffusion Models for Inverse Problems using Manifold Constraints

NeurIPS 2022accept

Recently, diffusion models have been used to solve various inverse problems in an unsupervised manner with appropriate modifications to the sampling process. However, the current solvers, which recursively apply a reverse diffusion step followed by a projection-based measurement consistency step, of…

2020

Optimal Transport Structure of CycleGAN for Unsupervised Learning for Inverse Problems

ICASSP 2020accepted

Optimal transport (OT) is a mathematical theory that can provide a tool how to transfer one measure to another measure at minimal cost, thus serve another framework for computer vision tasks of image processing without reference. Cycleconsistent generative adversarial network (cycleGAN) is a recent…

Cited by 0SourceScholar