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Pengcheng Luo

6 accepted papers

2026

Evaluating Generative Models via One-Dimensional Code Distributions

CVPR 2026

Most evaluations of generative models rely on feature-distribution metrics such as FID, which operate on continuous recognition features that are explicitly trained to be invariant to appearance variations, and thus discard cues critical for perceptual quality. We instead evaluate models in the spac

Cited by 0SourcecodeScholar
2026

GROW: Watermark Generation with Progressive Guidance for Diffusion Models

CVPR 2026

Digital watermarking is a cornerstone for copyright protection. With the rapid advancement of generative models like diffusion models, in-generation and training-free watermarking techniques have garnered more attention for their endogeneity and convenience. These methods typically embed a watermark

Cited by 0SourceScholar
2026

Manifold-Optimal Guidance: A Unified Riemannian Control View of Diffusion Guidance

ICML 2026spotlight

Classifier-Free Guidance (CFG) serves as the de facto control mechanism for conditional diffusion, yet high guidance scales notoriously induce oversaturation, texture artifacts, and structural collapse. We attribute this failure to a geometric mismatch: standard CFG performs Euclidean extrapolation …

Cited by 0SourceScholar
2026

Too Vivid to Be Real? Benchmarking and Calibrating Generative Color Fidelity

CVPR 2026

Recent advances in text-to-image (T2I) generation have greatly improved visual quality, yet producing images that appear visually authentic to real-world photography remains challenging. This is partly due to biases in existing evaluation paradigms: human ratings and preference-trained metrics often

Cited by 0SourcecodeScholar
2025

Speaking at the Right Level: Literacy-Controlled Counterspeech Generation with RAG-RL

EMNLP 2025

Health misinformation spreading online poses a significant threat to public health. Researchers have explored methods for automatically generating counterspeech to health misinformation as a mitigation strategy. Existing approaches often produce uniform responses, ignoring that the health literacy l

Cited by 0SourcePDFScholar
2024

Outcome-Constrained Large Language Models for Countering Hate Speech

EMNLP 2024main

Automatic counterspeech generation methods have been developed to assist efforts in combating hate speech. Existing research focuses on generating counterspeech with linguistic attributes such as being polite, informative, and intent-driven. However, the real impact of counterspeech in online enviro…

Cited by 7SourcePDFScholar