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Zhijian Liu

38 accepted papers

2026

3D Aware Region Prompted Vision Language Model

ICLR 2026poster

We present Spatial Region 3D (SR-3D) aware vision-language model that connects single-view 2D images and multi-view 3D data through a shared visual token space. SR-3D supports flexible region prompting, allowing users to annotate regions with bounding boxes, segmentation masks on any frame, or direc…

Cited by 0SourcecodeScholar
2026

Fast-dLLM v2: Efficient Block-Diffusion LLM

ICLR 2026poster

Autoregressive (AR) large language models (LLMs) have achieved remarkable performance across a wide range of natural language tasks, yet their inherent sequential decoding limits inference efficiency. In this work, we propose Fast-dLLM v2, a carefully designed block diffusion language model (dLLM) t…

Cited by 0SourcecodeScholar
2026

Fast-dLLM: Training-free Acceleration of Diffusion LLM by Enabling KV Cache and Parallel Decoding

ICLR 2026poster

Diffusion-based large language models (Diffusion LLMs) have shown promise for non-autoregressive text generation. However, the practical inference speed of open-sourced Diffusion LLMs often lags behind autoregressive models due to the lack of Key-Value (KV) Cache and quality degradation when decodin…

Cited by 0SourceScholar
2026

OmniVinci: Enhancing Architecture and Data for Omni-Modal Understanding LLM

ICLR 2026poster

Advancing machine intelligence requires developing the ability to perceive across multiple modalities, much as humans sense the world. We introduce OmniVinci, an initiative to build a strong, open-source, omni-modal LLM. We carefully study the design choices across model architecture and data curati…

Cited by 0SourcecodeScholar
2026

PFAvatar: Pose-Fusion 3D Personalized Avatar Reconstruction from Real-World Outfit-of-the-Day Photos

AAAI 2026technical

We propose PFAvatar (Pose-Fusion Avatar), a new method that reconstructs high-quality 3D avatars from Outfit of the Day (OOTD) photos, which exhibit diverse poses, occlusions, and complex backgrounds. Our method consists of two stages: (1) fine-tuning a pose-aware diffusion model from few-shot OOTD

Cited by 0SourcePDFScholar
2026

ParoQuant: Pairwise Rotation Quantization for Efficient Reasoning LLM Inference

ICLR 2026poster

Post-training quantization (PTQ) compresses the weights and activations of large language models (LLMs) into low-precision representations to reduce memory footprint and accelerate inference. However, the presence of outliers in weights and activations often leads to large quantization errors and se…

Cited by 0SourcecodeScholar
2025

KVCOMM: Online Cross-context KV-cache Communication for Efficient LLM-based Multi-agent Systems

NeurIPS 2025poster

Multi-agent large language model (LLM) systems are increasingly adopted for complex language processing tasks that require communication and coordination among agents. However, these systems often suffer substantial overhead from repeated reprocessing of overlapping contexts across agents. In typica…

Cited by 0SourcecodeScholar
2025

LongVILA: Scaling Long-Context Visual Language Models for Long Videos

ICLR 2025poster

Long-context capability is critical for multi-modal foundation models, especially for long video understanding. We introduce LongVILA, a full-stack solution for long-context visual-language models by co-designing the algorithm and system. For model training, we upgrade existing VLMs to support long…

2025

NVILA: Efficient Frontier Visual Language Models

CVPR 2025poster

Visual language models (VLMs) have made significant advances in accuracy in recent years. However, their efficiency has received much less attention. This paper introduces NVILA, a family of open VLMs designed to optimize both efficiency and accuracy. Building on top of VILA, we improve its model ar…

Cited by 43SourcePDFScholar
2025

SparseLoRA: Accelerating LLM Fine-Tuning with Contextual Sparsity

ICML 2025poster

Fine-tuning LLMs is both computationally and memory-intensive. While parameter-efficient fine-tuning methods, such as QLoRA and DoRA, reduce the number of trainable parameters and lower memory usage, they do not decrease computational cost. In some cases, they may even slow down fine-tuning. In this…

Cited by 0SourcePDFScholar
2025

SparseVILA: Decoupling Visual Sparsity for Efficient VLM Inference

ICCV 2025accepted

Vision language models have received increasing attention for their ability to integrate visual and textual understanding, with some capable of processing native-resolution images and long videos. While the capacity to process large visual data unlocks numerous downstream applications, it often intr…

Cited by 0SourcePDFScholar
2025

StreamDiffusion: A Pipeline-level Solution for Real-Time Interactive Generation

ICCV 2025poster

We introduce StreamDiffusion, a real-time diffusion pipeline designed for streaming image generation. Existing diffusion models are adept at creating images from text or image prompts, yet they often fall short in real-time interaction. This limitation becomes particularly evident in scenarios invol…

2025

VILA-M3: Enhancing Vision-Language Models with Medical Expert Knowledge

CVPR 2025highlight

Generalist vision language models (VLMs) have made significant strides in computer vision, but they fall short in specialized fields like healthcare, where expert knowledge is essential. Current large multimodal models like Gemini and GPT-4o are insufficient for medical tasks due to their reliance o…

Cited by 5SourcePDFScholar
2024

LongLoRA: Efficient Fine-tuning of Long-Context Large Language Models

ICLR 2024oral

We present LongLoRA, an efficient fine-tuning approach that extends the context sizes of pre-trained large language models (LLMs), with limited computation cost. Typically, training LLMs with long context sizes is computationally expensive, requiring extensive training hours and GPU resources. For e…

2024

Point Transformer V3: Simpler Faster Stronger

CVPR 2024poster

This paper is not motivated to seek innovation within the attention mechanism. Instead it focuses on overcoming the existing trade-offs between accuracy and efficiency within the context of point cloud processing leveraging the power of scale. Drawing inspiration from recent advances in 3D large-sca…

Cited by 981SourcePDFScholar
2024

Sparse Refinement for Efficient High-Resolution Semantic Segmentation

ECCV 2024poster

"Semantic segmentation empowers numerous real-world applications, such as autonomous driving and augmented/mixed reality. These applications often operate on high-resolution images (, 8 megapixels) to capture the fine details. However, this comes at the cost of considerable computational complexity,…

2023

BEVFusion: Multi-Task Multi-Sensor Fusion with Unified Bird's-Eye View Representation

ICRA 2023poster

Multi-sensor fusion is essential for an accurate and reliable autonomous driving system. Recent approaches are based on point-level fusion: augmenting the LiDAR point cloud with camera features. However, the camera-to-LiDAR projection throws away the semantic density of camera features, hindering th…

Cited by 1130SourcecodeScholar
2023

FlatFormer: Flattened Window Attention for Efficient Point Cloud Transformer

CVPR 2023poster

Transformer, as an alternative to CNN, has been proven effective in many modalities (e.g., texts and images). For 3D point cloud transformers, existing efforts focus primarily on pushing their accuracy to the state-of-the-art level. However, their latency lags behind sparse convolution-based models…

Cited by 89SourcePDFScholar
2023

MapPrior: Bird's-Eye View Map Layout Estimation with Generative Models

ICCV 2023poster

Despite tremendous advancements in bird's-eye view (BEV) perception, existing models fall short in generating realistic and coherent semantic map layouts, and they fail to account for uncertainties arising from partial sensor information (such as occlusion or limited coverage). In this work, we intr…

Cited by 14PDFScholar
2023

SparseViT: Revisiting Activation Sparsity for Efficient High-Resolution Vision Transformer

CVPR 2023poster

High-resolution images enable neural networks to learn richer visual representations. However, this improved performance comes at the cost of growing computational complexity, hindering their usage in latency-sensitive applications. As not all pixels are equal, skipping computations for less-importa…

Cited by 55SourcePDFScholar
2022

VISTA 2.0: An Open, Data-driven Simulator for Multimodal Sensing and Policy Learning for Autonomous Vehicles

ICRA 2022poster

Simulation has the potential to transform the development of robust algorithms for mobile agents deployed in safety-critical scenarios. However, the poor photorealism and lack of diverse sensor modalities of existing simulation engines remain key hurdles towards realizing this potential. Here, we pr…

Cited by 108SourceScholar
2021

Efficient and Robust LiDAR-Based End-to-End Navigation

ICRA 2021poster

Deep learning has been used to demonstrate end-to-end neural network learning for autonomous vehicle control from raw sensory input. While LiDAR sensors provide reliably accurate information, existing end-to-end driving solutions are mainly based on cameras since processing 3D data requires a large…

Cited by 56SourceScholar
2021

LocTex: Learning Data-Efficient Visual Representations From Localized Textual Supervision

ICCV 2021poster

Computer vision tasks such as object detection and semantic/instance segmentation rely on the painstaking annotation of large training datasets. In this paper, we propose LocTex that takes advantage of the low-cost localized textual annotations (i.e., captions and synchronized mouse-over gestures) t…

Cited by 14PDFScholar
2021

SemAlign: Annotation-Free Camera-LiDAR Calibration with Semantic Alignment Loss

IROS 2021poster

Multi-sensor solution has been widely adopted in real-world robotics systems (e.g., self-driving vehicles) due to its better robustness. However, its performance is highly dependent on the accurate calibration between different sensors, which is very time-consuming (i.e., hours of human efforts) to…

Cited by 22SourceScholar
2020

APQ: Joint Search for Network Architecture, Pruning and Quantization Policy

CVPR 2020poster

We present APQ, a novel design methodology for efficient deep learning deployment. Unlike previous methods that separately optimize the neural network architecture, pruning policy, and quantization policy, we design to optimize them in a joint manner. To deal with the larger design space it brings,…

Cited by 253PDFcodeScholar
2020

DataMix: Efficient Privacy-Preserving Edge-Cloud Inference

ECCV 2020poster

Deep neural networks are widely deployed on edge devices (g, for computer vision and speech recognition). Users either perform the inference locally (\ie, edge-based) or send the data to the cloud and run inference remotely (\ie, cloud-based). However, both solutions have their limitations: edge dev…

Cited by 49SourcePDFScholar
2020

Differentiable Augmentation for Data-Efficient GAN Training

NeurIPS 2020poster

The performance of generative adversarial networks (GANs) heavily deteriorates given a limited amount of training data. This is mainly because the discriminatorsis memorizing the exact training set. To combat it, we propose Differentiable Augmentation (DiffAugment), a simple method that improves the…

2020

GAN Compression: Efficient Architectures for Interactive Conditional GANs

CVPR 2020poster

Conditional Generative Adversarial Networks (cGANs) have enabled controllable image synthesis for many computer vision and graphics applications. However, recent cGANs are 1-2 orders of magnitude more computationally-intensive than modern recognition CNNs. For example, GauGAN consumes 281G MACs per…

Cited by 294PDFcodeScholar
2020

Searching Efficient 3D Architectures with Sparse Point-Voxel Convolution

ECCV 2020poster

Self-driving cars need to understand 3D scenes efficiently and accurately in order to drive safely. Given the limited hardware resources, existing 3D perception models are not able to recognize small instances (e.g., pedestrians, cyclists) very well due to the low-resolution voxelization and aggress…

2018

AMC: AutoML for Model Compression and Acceleration on Mobile Devices

ECCV 2018poster

Model compression is an effective technique to efficiently deploy neural network models on mobile devices which have limited computation resources and tight power budgets. Conventional model compression techniques rely on hand-crafted features and require domain experts to explore the large design s…

2018

Learning to Exploit Stability for 3D Scene Parsing

NeurIPS 2018poster

Human scene understanding uses a variety of visual and non-visual cues to perform inference on object types, poses, and relations. Physics is a rich and universal cue which we exploit to enhance scene understanding. We integrate the physical cue of stability into the learning process using a REINFOR…

Cited by 49SourcePDFScholar