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Junfeng He

12 accepted papers

2025

Calibrated Multi-Preference Optimization for Aligning Diffusion Models

CVPR 2025poster

Aligning text-to-image (T2I) diffusion models with prefer-ence optimization is valuable for human-annotated datasets, but the heavy cost of manual data collection limits scalability. Using reward models offers an alternative, however, current preference optimization methods fall short in exploiting…

Cited by 5SourcePDFScholar
2025

Cropper: Vision-Language Model for Image Cropping through In-Context Learning

CVPR 2025poster

The goal of image cropping is to identify visually appealing crops in an image. Conventional methods are trained on specific datasets and fail to adapt to new requirements. Recent breakthroughs in large vision-language models (VLMs) enable visual in-context learning without explicit training. Howeve…

Cited by 2SourcePDFScholar
2025

Erasing More Than Intended? How Concept Erasure Degrades the Generation of Non-Target Concepts

ICCV 2025poster

Concept erasure techniques have recently gained significant attention for their potential to remove unwanted concepts from text-to-image models. While these methods often demonstrate promising results in controlled settings, their robustness in real-world applications and suitability for deployment…

Cited by 0SourcePDFScholar
2025

Focus-N-Fix: Region-Aware Fine-Tuning for Text-to-Image Generation

CVPR 2025highlight

Text-to-image (T2I) generation has made significant advances in recent years, but challenges still remain in the generation of perceptual artifacts, misalignment with complex prompts, and safety. The prevailing approach to address these issues involves collecting human feedback on generated images,…

Cited by 2SourcePDFScholar
2025

What Secrets Do Your Manifolds Hold? Understanding the Local Geometry of Generative Models

ICLR 2025poster

Deep Generative Models are frequently used to learn continuous representations of complex data distributions by training on a finite number of samples. For any generative model, including pre-trained foundation models with Diffusion or Transformer architectures, generation performance can significan…

2024

Parrot: Pareto-optimal Multi-Reward Reinforcement Learning Framework for Text-to-Image Generation

ECCV 2024oral

"Recent works have demonstrated that using reinforcement learning (RL) with multiple quality rewards can improve the quality of generated images in text-to-image (T2I) generation. However, manually adjusting reward weights poses challenges and may cause over-optimization in certain metrics. To solve…

Cited by 22SourcePDFScholar
2024

Rich Human Feedback for Text-to-Image Generation

CVPR 2024poster

Recent Text-to-Image (T2I) generation models such as Stable Diffusion and Imagen have made significant progress in generating high-resolution images based on text descriptions. However many generated images still suffer from issues such as artifacts/implausibility misalignment with text descriptions…

2024

UniAR: A Unified model for predicting human Attention and Responses on visual content

NeurIPS 2024poster

Progress in human behavior modeling involves understanding both implicit, early-stage perceptual behavior, such as human attention, and explicit, later-stage behavior, such as subjective preferences or likes. Yet most prior research has focused on modeling implicit and explicit human behavior in iso…

Cited by 2SourcePDFScholar
2023

Differentially Private Heatmaps

AAAI 2023technical

We consider the task of producing heatmaps from users' aggregated data while protecting their privacy. We give a differentially private (DP) algorithm for this task and demonstrate its advantages over previous algorithms on real-world datasets. Our core algorithmic primitive is a DP procedure that…

Cited by 7SourcePDFScholar
2023

Learning From Unique Perspectives: User-Aware Saliency Modeling

CVPR 2023poster

Everyone is unique. Given the same visual stimuli, people's attention is driven by both salient visual cues and their own inherent preferences. Knowledge of visual preferences not only facilitates understanding of fine-grained attention patterns of diverse users, but also has the potential of benefi…

Cited by 14SourcePDFScholar
2023

Teacher-Generated Spatial-Attention Labels Boost Robustness and Accuracy of Contrastive Models

CVPR 2023poster

Human spatial attention conveys information about theregions of visual scenes that are important for perform-ing visual tasks. Prior work has shown that the informa-tion about human attention can be leveraged to benefit var-ious supervised vision tasks. Might providing this weakform of supervision b…

2022

Deep Saliency Prior for Reducing Visual Distraction

CVPR 2022poster

Using only a model that was trained to predict where people look at images, and no additional training data, we can produce a range of powerful editing effects for reducing distraction in images. Given an image and a mask specifying the region to edit, we backpropagate through a state-of-the-art sal…

Cited by 23PDFScholar