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Donghoon Ahn

7 accepted papers

2026

A Noise is Worth Diffusion Guidance

ICLR 2026poster

Diffusion models have demonstrated remarkable image generation capabilities, but their performance heavily relies on classifier-free guidance (CFG). While CFG significantly enhances image quality, evaluating both conditional and unconditional models at every denoising step leads to substantial compu…

Cited by 0SourcecodeScholar
2026

TAG: Tangential Amplifying Guidance for Hallucination-Resistant Sampling

ICML 2026poster

Recent diffusion models achieve the state-of-the-art performance in image generation, but often suffer from semantic inconsistencies or *hallucinations*. While various inference-time guidance methods can enhance generation, they often operate *indirectly* by relying on external signals or architectu…

Cited by 0SourceScholar
2026

Video Camera Trajectory Editing with Generative Rendering from Estimated Geometry

AAAI 2026technical

We introduce a novel framework for video camera trajectory editing, enabling the re-synthesis of monocular videos along user-defined camera paths. This task is challenging due to its ill-posed nature and the limited multi-view video data for training. Traditional reconstruction methods struggle with

Cited by 0SourcePDFScholar
2025

Identity-preserving Distillation Sampling by Fixed-Point Iterator

CVPR 2025poster

Score distillation sampling (SDS) demonstrates a powerful capability for text-conditioned 2D image and 3D object generation by distilling the knowledge from learned score functions. However, SDS often suffers from blurriness caused by noisy gradients. When SDS meets the image editing, such degradati…

Cited by 0SourcePDFScholar
2025

Where and How to Perturb: On the Design of Perturbation Guidance in Diffusion and Flow Models

NeurIPS 2025poster

Recent guidance methods in diffusion models steer reverse sampling by perturbing the model to construct an implicit weak model and guide generation away from it. Among these approaches, attention perturbation has demonstrated strong empirical performance in unconditional scenarios where classifier-f…

Cited by 0SourceScholar
2024

Self-Rectifying Diffusion Sampling with Perturbed-Attention Guidance

ECCV 2024poster

"Recent studies have demonstrated that diffusion models can generate high-quality samples, but their quality heavily depends on sampling guidance techniques, such as classifier guidance (CG) and classifier-free guidance (CFG). These techniques are often not applicable in unconditional generation or…

2023

Debiasing Scores and Prompts of 2D Diffusion for View-consistent Text-to-3D Generation

NeurIPS 2023poster

Existing score-distilling text-to-3D generation techniques, despite their considerable promise, often encounter the view inconsistency problem. One of the most notable issues is the Janus problem, where the most canonical view of an object (\textit{e.g}., face or head) appears in other views. In thi…