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Tiankai Hang

9 accepted papers

2026

Meta-CoT: Enhancing Granularity and Generalization in Image Editing

CVPR 2026

Unified multi-modal understanding/generative models have shown improved image editing performance by incorporating fine-grained understanding into their Chain-of-Thought (CoT) process. However, a critical question remains underexplored: what forms of CoT and training strategy can jointly enhance bot

Cited by 0SourcecodeScholar
2026

PromptEnhancer: Taming Your Rewriter for Text-to-Image Generation via Fine-Grained Reward

CVPR 2026

Recent text-to-image (T2I) diffusion models have achieved impressive progress in generating high-fidelity images, yet they often fail to faithfully follow complex user prompts, especially in attribute binding, negation, and compositional reasoning. To address this limitation, we propose PromptEnhanc

Cited by 0SourcecodeScholar
2026

Re-Align: Structured Reasoning-guided Alignment for In-Context Image Generation and Editing

CVPR 2026

In-context image generation and editing (ICGE) enables users to specify visual concepts through interleaved image-text prompts, demanding precise understanding and faithful execution of user intent. Although recent unified multimodal models exhibit promising understanding capabilities, these strengt

Cited by 0SourceScholar
2026

TAG-MoE: Task-Aware Gating for Unified Generative Mixture-of-Experts

CVPR 2026

Unified image generation and editing models suffer from severe task interference in dense diffusion transformers architectures, where a shared parameter space must compromise between conflicting objectives (e.g., local editing v.s. subject-driven generation). While the sparse Mixture-of-Experts (MoE

Cited by 0SourcecodeScholar
2025

Aesthetic Post-Training Diffusion Models from Generic Preferences with Step-by-step Preference Optimization

CVPR 2025poster

Generating visually appealing images is fundamental to modern text-to-image generation models. A potential solution to better aesthetics is direct preference optimization (DPO), which has been applied to diffusion models to improve general image quality including prompt alignment and aesthetics. Pop…

2025

Improved Noise Schedule for Diffusion Training

ICCV 2025poster

Diffusion models have emerged as the de facto choice for generating high-quality visual signals across various domains.However, training a single model to predict noise across various levels poses significant challenges, necessitating numerous iterations and incurring significant computational costs…

Cited by 0SourcePDFScholar
2024

InstructDiffusion: A Generalist Modeling Interface for Vision Tasks

CVPR 2024poster

We present InstructDiffusion a unified and generic framework for aligning computer vision tasks with human instructions. Unlike existing approaches that integrate prior knowledge and pre-define the output space (e.g. categories and coordinates) for each vision task we cast diverse vision tasks into…

Cited by 109SourcePDFScholar
2023

Efficient Diffusion Training via Min-SNR Weighting Strategy

ICCV 2023poster

Denoising diffusion models have been a mainstream approach for image generation, however, training these models often suffers from slow convergence. In this paper, we discovered that the slow convergence is partly due to conflicting optimization directions between timesteps. To address this issue, w…

Cited by 149PDFcodeScholar
2022

Advancing High-Resolution Video-Language Representation With Large-Scale Video Transcriptions

CVPR 2022poster

We study joint video and language (VL) pre-training to enable cross-modality learning and benefit plentiful downstream VL tasks. Existing works either extract low-quality video features or learn limited text embedding, while neglecting that high-resolution videos and diversified semantics can signif…

Cited by 225PDFcodeScholar