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Humphrey Shi

58 accepted papers

2026

DuoGen: Towards Autonomous Interleaved Multimodal Generation

CVPR 2026

Interleaved multimodal generation enables capabilities beyond unimodal generation models, such as step-by-step instructional guides, visual planning, and generating visual drafts for reasoning. However, the quality of existing interleaved generation models under general instructions remains limited

Cited by 0SourceScholar
2026

MapReduce LoRA: Advancing the Pareto Front in Multi-Preference Optimization for Generative Models

CVPR 2026

Reinforcement learning from human feedback (RLHF) with reward models has advanced alignment of generative models to human aesthetic and perceptual preferences. However, jointly optimizing multiple rewards often incurs an alignment tax--improving one dimension while degrading others. To address this,

Cited by 0SourcecodeScholar
2026

SAGE: Training Smart Any-Horizon Agents for Long Video Reasoning with Reinforcement Learning

CVPR 2026

As humans, we are natural any-horizon reasoners, i.e., we can decide whether to iteratively skim long videos or watch short ones in full when necessary for a given task. With this in mind, one would expect video reasoning models to reason flexibly across different durations. However, SOTA models are

Cited by 0SourcecodeScholar
2025

CLIP-GS: Unifying Vision-Language Representation with 3D Gaussian Splatting

ICCV 2025poster

Recent works in 3D representation learning and multimodal pre-training have made remarkable progress. However, typically multimodal 3D models are only capable of handling point clouds. Compared to the emerging 3D representation technique, 3D Gaussian Splatting (3DGS), the spatially sparse point clou…

Cited by 0SourcePDFScholar
2025

ClassDiffusion: More Aligned Personalization Tuning with Explicit Class Guidance

ICLR 2025poster

Recent text-to-image customization works have proven successful in generating images of given concepts by fine-tuning diffusion models on a few examples. However, tuning-based methods inherently tend to overfit the concepts, resulting in failure to create the concept under multiple conditions (*e.g.…

2025

Eagle: Exploring The Design Space for Multimodal LLMs with Mixture of Encoders

ICLR 2025spotlight

The ability to accurately interpret complex visual information is a crucial topic of multimodal large language models (MLLMs). Recent work indicates that enhanced visual perception significantly reduces hallucinations and improves performance on resolution-sensitive tasks, such as optical character…

2025

Elevating Visual Perception in Multimodal LLMs with Visual Embedding Distillation

NeurIPS 2025poster

In recent times, the standard practice for developing MLLMs is to feed features from vision encoder(s) into the LLM and train with natural language supervision. This approach often causes models to lean towards language comprehension and undermine the rich visual perception signals present in the da…

Cited by 0SourceScholar
2025

Everything to the Synthetic: Diffusion-driven Test-time Adaptation via Synthetic-Domain Alignment

CVPR 2025poster

Test-time adaptation (TTA) aims to improve the performance of source-domain pre-trained models on previously unseen, shifted target domains. Traditional TTA methods primarily adapt model weights based on target data streams, making model performance sensitive to the amount and order of target data.…

2025

FlexVAR: Flexible Visual Autoregressive Modeling without Residual Prediction

NeurIPS 2025poster

This work challenges the residual prediction paradigm in visual autoregressive modeling and presents FlexVAR, a new Flexible Visual AutoRegressive image generation paradigm. FlexVAR facilitates autoregressive learning with ground-truth prediction, enabling each step to independently produce plausibl…

Cited by 0SourcecodeScholar
2025

HD-Painter: High-Resolution and Prompt-Faithful Text-Guided Image Inpainting with Diffusion Models

ICLR 2025poster

Recent progress in text-guided image inpainting, based on the unprecedented success of text-to-image diffusion models, has led to exceptionally realistic and visually plausible results. However, there is still significant potential for improvement in current text-to-image inpainting models, particul…

2025

IMG: Calibrating Diffusion Models via Implicit Multimodal Guidance

ICCV 2025poster

Ensuring precise multimodal alignment between diffusion-generated images and input prompts has been a long-standing challenge. Earlier works finetune diffusion weight using high-quality preference data, which tends to be limited and difficult to scale up. Recent editing-based methods further refine…

2025

StreamingT2V: Consistent, Dynamic, and Extendable Long Video Generation from Text

CVPR 2025poster

Text-to-video diffusion models enable the generation of high-quality videos that follow text instructions, simplifying the process of producing diverse and individual content. Current methods excel in generating short videos (up to 16s), but produce hard-cuts when naively extended to long video synt…

2025

T2I-Copilot: A Training-Free Multi-Agent Text-to-Image System for Enhanced Prompt Interpretation and Interactive Generation

ICCV 2025poster

Text-to-Image (T2I) generative models have revolutionized content creation but remain highly sensitive to prompt phrasing, often requiring users to repeatedly refine prompts multiple times without clear feedback. While techniques such as automatic prompt engineering, controlled text embeddings, deno…

2024

Benchmarking Object Detectors with COCO: A New Path Forward

ECCV 2024poster

"The Common Objects in Context (COCO) dataset has been instrumental in benchmarking object detectors over the past decade. Like every dataset, COCO contains subtle errors and imperfections stemming from its annotation procedure. With the advent of high-performing models, we ask whether these errors…

2024

Brush2Prompt: Contextual Prompt Generator for Object Inpainting

CVPR 2024poster

Object inpainting is a task that involves adding objects to real images and seamlessly compositing them. With the recent commercialization of products like Stable Diffusion and Generative Fill inserting objects into images by using prompts has achieved impressive visual results. In this paper we pro…

Cited by 1SourcePDFScholar
2024

Collaborative Vision-Text Representation Optimizing for Open-Vocabulary Segmentation

ECCV 2024oral

"Pre-trained vision-language models, e.g. CLIP, have been increasingly used to address the challenging Open-Vocabulary Segmentation (OVS) task, benefiting from their well-aligned vision-text embedding space. Typical solutions involve either freezing CLIP during training to unilaterally maintain its…

2024

CuMo: Scaling Multimodal LLM with Co-Upcycled Mixture-of-Experts

NeurIPS 2024poster

Recent advancements in Multimodal Large Language Models (LLMs) have focused primarily on scaling by increasing text-image pair data and enhancing LLMs to improve performance on multimodal tasks. However, these scaling approaches are computationally expensive and overlook the significance of efficien…

2024

Diffusion for Natural Image Matting

ECCV 2024poster

"Existing natural image matting algorithms inevitably have flaws in their predictions on difficult cases, and their one-step prediction manner cannot further correct these errors. In this paper, we investigate a multi-step iterative approach for the first time to tackle the challenging natural image…

2024

Faster Neighborhood Attention: Reducing the O(n^2) Cost of Self Attention at the Threadblock Level

NeurIPS 2024poster

Neighborhood attention reduces the cost of self attention by restricting each token’s attention span to its nearest neighbors. This restriction, parameterized by a window size and dilation factor, draws a spectrum of possible attention patterns between linear projection and self attention. Neighborh…

2024

FineStyle: Fine-grained Controllable Style Personalization for Text-to-image Models

NeurIPS 2024poster

Few-shot fine-tuning of text-to-image (T2I) generation models enables people to create unique images in their own style using natural languages without requiring extensive prompt engineering. However, fine-tuning with only a handful, as little as one, of image-text paired data prevents fine-grained…

Cited by 4SourcePDFScholar
2024

Grounded-Instruct-Pix2Pix: Improving Instruction Based Image Editing with Automatic Target Grounding

ICASSP 2024accepted

Text-guided Image Editing has recently attracted significant attention due to advances in the denoising diffusion models field. Current methods make it possible to execute complex image editing operations with simple text prompts. But despite impressive results, they often fail to restrict the edit…

Cited by 0SourceScholar
2024

OpenBias: Open-set Bias Detection in Text-to-Image Generative Models

CVPR 2024highlight

Text-to-image generative models are becoming increasingly popular and accessible to the general public. As these models see large-scale deployments it is necessary to deeply investigate their safety and fairness to not disseminate and perpetuate any kind of biases. However existing works focus on de…

2024

PAIR Diffusion: A Comprehensive Multimodal Object-Level Image Editor

CVPR 2024poster

Generative image editing has recently witnessed extremely fast-paced growth. Some works use high-level conditioning such as text while others use low-level conditioning. Nevertheless most of them lack fine-grained control over the properties of the different objects present in the image i.e. object-…

2024

Prompt-Free Diffusion: Taking "Text" out of Text-to-Image Diffusion Models

CVPR 2024poster

Text-to-image (T2I) research has grown explosively in the past year owing to the large-scale pre-trained diffusion models and many emerging personalization and editing approaches. Yet one pain point persists: the text prompt engineering and searching high-quality text prompts for customized results…

2024

Smooth Diffusion: Crafting Smooth Latent Spaces in Diffusion Models

CVPR 2024poster

Recently diffusion models have made remarkable progress in text-to-image (T2I) generation synthesizing images with high fidelity and diverse contents. Despite this advancement latent space smoothness within diffusion models remains largely unexplored. Smooth latent spaces ensure that a perturbation…

2024

Social Reward: Evaluating and Enhancing Generative AI through Million-User Feedback from an Online Creative Community

ICLR 2024spotlight

Social reward as a form of community recognition provides a strong source of motivation for users of online platforms to actively engage and contribute with content to accumulate peers approval. In the realm of text-conditioned image synthesis, the recent surge in progress has ushered in a collabora…

2024

VCoder: Versatile Vision Encoders for Multimodal Large Language Models

CVPR 2024poster

Humans possess the remarkable skill of Visual Perception the ability to see and understand the seen helping them make sense of the visual world and in turn reason. Multimodal Large Language Models (MLLM) have recently achieved impressive performance on vision-language tasks ranging from visual quest…

2024

Zero-Painter: Training-Free Layout Control for Text-to-Image Synthesis

CVPR 2024poster

We present Zero-Painter a novel training-free framework for layout-conditional text-to-image synthesis that facilitates the creation of detailed and controlled imagery from textual prompts. Our method utilizes object masks and individual descriptions coupled with a global text prompt to generate ima…

2023

Automatic High Resolution Wire Segmentation and Removal

CVPR 2023poster

Wires and powerlines are common visual distractions that often undermine the aesthetics of photographs. The manual process of precisely segmenting and removing them is extremely tedious and may take up to hours, especially on high-resolution photos where wires may span the entire space. In this pape…

2023

Graph Transformer GANs for Graph-Constrained House Generation

CVPR 2023poster

We present a novel graph Transformer generative adversarial network (GTGAN) to learn effective graph node relations in an end-to-end fashion for the challenging graph-constrained house generation task. The proposed graph-Transformer-based generator includes a novel graph Transformer encoder that com…

Cited by 31SourcePDFScholar
2023

Learning Mask-aware CLIP Representations for Zero-Shot Segmentation

NeurIPS 2023poster

Recently, pre-trained vision-language models have been increasingly used to tackle the challenging zero-shot segmentation task. Typical solutions follow the paradigm of first generating mask proposals and then adopting CLIP to classify them. To maintain the CLIP's zero-shot transferability, previous…

2023

MI-GAN: A Simple Baseline for Image Inpainting on Mobile Devices

ICCV 2023poster

In recent years, many deep learning based image inpainting methods have been developed by the research community. Some of those methods have shown impressive image completion abilities. Yet, to the best of our knowledge, there is no image inpainting model designed to run on mobile devices. In this p…

Cited by 47PDFcodeScholar
2023

OneFormer: One Transformer To Rule Universal Image Segmentation

CVPR 2023poster

Universal Image Segmentation is not a new concept.Past attempts to unify image segmentation include scene parsing, panoptic segmentation, and, more recently, new panoptic architectures. However, such panoptic architectures do not truly unify image segmentation because they need to be trained individ…

2023

Specialist Diffusion: Plug-and-Play Sample-Efficient Fine-Tuning of Text-to-Image Diffusion Models To Learn Any Unseen Style

CVPR 2023poster

Diffusion models have demonstrated impressive capability of text-conditioned image synthesis, and broader application horizons are emerging by personalizing those pretrained diffusion models toward generating some specialized target object or style. In this paper, we aim to learn an unseen style by…

2023

Text2Video-Zero: Text-to-Image Diffusion Models are Zero-Shot Video Generators

ICCV 2023oral

Recent text-to-video generation approaches rely on computationally heavy training and require large-scale video datasets. In this paper, we introduce a new task, zero-shot text-to-video generation, and propose a low-cost approach (without any training or optimization) by leveraging the power of exis…

Cited by 578PDFcodeScholar
2023

Versatile Diffusion: Text, Images and Variations All in One Diffusion Model

ICCV 2023poster

Recent advances in diffusion models have set an impressive milestone in many generation tasks, and trending works such as DALL-E2, Imagen, and Stable Diffusion have attracted great interest. Despite the rapid landscape changes, recent new approaches focus on extensions and performance rather than ca…

Cited by 187PDFcodeScholar
2023

Zero-Shot Generative Model Adaptation via Image-Specific Prompt Learning

CVPR 2023poster

Recently, CLIP-guided image synthesis has shown appealing performance on adapting a pre-trained source-domain generator to an unseen target domain. It does not require any target-domain samples but only the textual domain labels. The training is highly efficient, e.g., a few minutes. However, existi…

2022

AdaFocus V2: End-to-End Training of Spatial Dynamic Networks for Video Recognition

CVPR 2022poster

Recent works have shown that the computational efficiency of video recognition can be significantly improved by reducing the spatial redundancy. As a representative work, the adaptive focus method (AdaFocus) has achieved a favorable trade-off between accuracy and inference speed by dynamically ident…

Cited by 63PDFcodeScholar
2022

AdaFocusV3: On Unified Spatial-Temporal Dynamic Video Recognition

ECCV 2022poster

"Recent research has revealed that reducing the temporal and spatial redundancy are both effective approaches towards efficient video recognition, e.g., allocating the majority of computation to a task-relevant subset of frames or the most valuable image regions of each frame. However, in most exist…

Cited by 22SourcePDFScholar
2022

DiSparse: Disentangled Sparsification for Multitask Model Compression

CVPR 2022poster

Despite the popularity of Model Compression and Multitask Learning, how to effectively compress a multitask model has been less thoroughly analyzed due to the challenging entanglement of tasks in the parameter space. In this paper, we propose DiSparse, a simple, effective, and first-of-its-kind mult…

Cited by 23PDFcodeScholar
2022

Mask Matching Transformer for Few-Shot Segmentation

NeurIPS 2022accept

In this paper, we aim to tackle the challenging few-shot segmentation task from a new perspective. Typical methods follow the paradigm to firstly learn prototypical features from support images and then match query features in pixel-level to obtain segmentation results. However, to obtain satisfacto…

2022

Object Localization Under Single Coarse Point Supervision

CVPR 2022poster

Point-based object localization (POL), which pursues high-performance object sensing under low-cost data annotation, has attracted increased attention. However, the point annotation mode inevitably introduces semantic variance for the inconsistency of annotated points. Existing POL methods heavily r…

Cited by 33PDFcodeScholar
2022

Point-to-Box Network for Accurate Object Detection via Single Point Supervision

ECCV 2022poster

"Object detection using single point supervision has received increasing attention over the years. However, the performance gap between point supervised object detection (PSOD) and bounding box supervised detection remains large. In this paper, we attribute such a large performance gap to the failur…

2022

SinNeRF: Training Neural Radiance Fields on Complex Scenes from a Single Image

ECCV 2022poster

"Despite the rapid development of Neural Radiance Field (NeRF), the necessity of dense covers largely prohibits its wider applications. While several recent works have attempted to address this issue, they either operate with sparse views (yet still, a few of them) or on simple objects/scenes. In th…

2022

VideoINR: Learning Video Implicit Neural Representation for Continuous Space-Time Super-Resolution

CVPR 2022poster

Videos typically record the streaming and continuous visual data as discrete consecutive frames. Since the storage cost is expensive for videos of high fidelity, most of them are stored in a relatively low resolution and frame rate. Recent works of Space-Time Video Super-Resolution (STVSR) are devel…

Cited by 120PDFcodeScholar
2021

A Multi-Mode Modulator for Multi-Domain Few-Shot Classification

ICCV 2021poster

Most existing few-shot classification methods only consider generalization on one dataset (i.e., single-domain), failing to transfer across various seen and unseen domains. In this paper, we consider the more realistic multi-domain few-shot classification problem to investigate the cross-domain gene…

Cited by 44PDFcodeScholar
2021

Adaptive Consistency Regularization for Semi-Supervised Transfer Learning

CVPR 2021poster

While recent studies on semi-supervised learning have shown remarkable progress in leveraging both labeled and unlabeled data, most of them presume a basic setting of the model is randomly initialized. In this work, we consider semi-supervised learning and transfer learning jointly, leading to a mor…

Cited by 123PDFcodeScholar
2021

CompFeat: Comprehensive Feature Aggregation for Video Instance Segmentation

AAAI 2021technical

Video instance segmentation is a complex task in which we need to detect, segment, and track each object for any given video. Previous approaches only utilize single-frame features for the detection, segmentation, and tracking of objects and they suffer in the video scenario due to several distinct…

2021

Interpretable Visual Reasoning via Induced Symbolic Space

ICCV 2021poster

We study the problem of concept induction in visual reasoning, i.e., identifying concepts and their hierarchical relationships from question-answer pairs associated with images; and achieve an interpretable model via working on the induced symbolic concept space. To this end, we first design a new f…

Cited by 22PDFcodeScholar
2021

Learning to Track Instances without Video Annotations

CVPR 2021poster

Tracking segmentation masks of multiple instances has been intensively studied, but still faces two fundamental challenges: 1) the requirement of large-scale, frame-wise annotation, and 2) the complexity of two-stage approaches. To resolve these challenges, we introduce a novel semi-supervised frame…

Cited by 32PDFScholar
2021

Rethinking Text Segmentation: A Novel Dataset and a Text-Specific Refinement Approach

CVPR 2021poster

Text segmentation is a prerequisite in many real-world text-related tasks, e.g., text style transfer, and scene text removal. However, facing the lack of high-quality datasets and dedicated investigations, this critical prerequisite has been left as an assumption in many works, and has been largely…

Cited by 85PDFcodeScholar