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While excellent in transfer learning, Vision-Language models (VLMs) come with high computational costs due to their large number of parameters. To address this issue, removing parameters via model pruning is a viable solution. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Matteo Farina , Massimiliano Mancini , Elia Cunegatti , Gaowen Liu , Giovanni Iacca , Elisa Ricci

Multimodal Large Language Models (MLLMs) suffer from substantial computational overhead due to the high redundancy in visual token sequences. Existing approaches typically address this issue using single-layer Vision Transformer (ViT)…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Yunkai Dang , Yizhu Jiang , Yifan Jiang , Qi Fan , Yinghuan Shi , Wenbin Li , Yang Gao

Vision token pruning has proven to be an effective acceleration technique for the efficient Vision Language Model (VLM). However, existing pruning methods demonstrate excellent performance preservation in visual question answering (VQA) and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Yihong Huang , Fei Ma , Yihua Shao , Jingcai Guo , Zitong Yu , Laizhong Cui , Qi Tian

Large vision-language models (VLMs) have demonstrated remarkable capabilities in open-world multimodal understanding, yet their high computational overheads pose great challenges for practical deployment. Some recent works have proposed…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Zhenwei Shao , Mingyang Wang , Weijun Zhang , Zhou Yu , Wenwen Pan , Yan Yang , Tao Wei , Hongyuan Zhang , Jun Yu

By treating visual tokens from visual encoders as text tokens, Multimodal Large Language Models (MLLMs) have achieved remarkable progress across diverse visual understanding tasks, leveraging the robust architectures of Large Language…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Zeliang Zhang , Phu Pham , Wentian Zhao , Kun Wan , Yu-Jhe Li , Jianing Zhou , Daniel Miranda , Ajinkya Kale , Chenliang Xu

Visual token pruning aims to compress and prune redundant visual tokens which play a critical role in efficient inference with large vision-language models (LVLMs). However, most existing work estimates visual redundancy using a single…

Computer Vision and Pattern Recognition · Computer Science 2025-11-20 Duo Li , Zuhao Yang , Xiaoqin Zhang , Ling Shao , Shijian Lu

Vision-Language-Action (VLA) models have shown great potential for embodied AI by integrating visual perception, language understanding, and action execution. In real-time deployment, these models must process continuous visual streams,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Ziyan Liu , Yeqiu Chen , Hongyi Cai , Tao Lin , Shuo Yang , Zheng Liu , Bo Zhao

Vision Transformers (ViTs), when pre-trained on large-scale data, provide general-purpose representations for diverse downstream tasks. However, artifacts in ViTs are widely observed across different supervision paradigms and downstream…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Cheng Shi , Yizhou Yu , Sibei Yang

Vision-language models (VLMs) face significant computational inefficiencies caused by excessive generation of visual tokens. While prior work shows that a large fraction of visual tokens are redundant, existing compression methods struggle…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Zhengyao Fang , Pengyuan Lyu , Chengquan Zhang , Guangming Lu , Jun Yu , Wenjie Pei

We present LightVLA, a simple yet effective differentiable token pruning framework for vision-language-action (VLA) models. While VLA models have shown impressive capability in executing real-world robotic tasks, their deployment on…

Robotics · Computer Science 2025-09-23 Titong Jiang , Xuefeng Jiang , Yuan Ma , Xin Wen , Bailin Li , Kun Zhan , Peng Jia , Yahui Liu , Sheng Sun , Xianpeng Lang

While Large Vision-Language Models (LVLMs) demonstrate exceptional multi-modal capabilities, the quadratic computational cost of processing high-resolution visual tokens remains a critical bottleneck. Though recent token reduction…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Surendra Pathak , Bo Han

There still remains an extreme performance gap between Vision Transformers (ViTs) and Convolutional Neural Networks (CNNs) when training from scratch on small datasets, which is concluded to the lack of inductive bias. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Zhiying Lu , Hongtao Xie , Chuanbin Liu , Yongdong Zhang

Standard deep learning models such as convolutional neural networks (CNNs) lack the ability of generalizing to domains which have not been seen during training. This problem is mainly due to the common but often wrong assumption of such…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Mehrdad Noori , Milad Cheraghalikhani , Ali Bahri , Gustavo A. Vargas Hakim , David Osowiechi , Ismail Ben Ayed , Christian Desrosiers

Large models achieve strong performance on Vision-and-Language Navigation (VLN) tasks, but are costly to run in resource-limited environments. Token pruning offers appealing tradeoffs for efficiency with minimal performance loss by reducing…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Wenda Qin , Andrea Burns , Bryan A. Plummer , Margrit Betke

Recent efforts to accelerate inference in Multimodal Large Language Models (MLLMs) have largely focused on visual token compression. The effectiveness of these methods is commonly evaluated by measuring the accuracy drop on existing MLLM…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Chenfei Liao , Wensong Wang , Zichen Wen , Xu Zheng , Yiyu Wang , Haocong He , Yuanhuiyi Lyu , Lutao Jiang , Xin Zou , Yuqian Fu , Bin Ren , Linfeng Zhang , Xuming Hu

Modern computer vision is converging on a closed loop in which perception, reasoning and generation mutually reinforce each other. However, this loop remains incomplete: the top-down influence of high-level reasoning on the foundational…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Yuxuan Li , Yicheng Zhang , Wenhao Tang , Yimian Dai , Ming-Ming Cheng , Xiang Li , Jian Yang

In this study, we introduce a novel method called group-wise \textbf{VI}sual token \textbf{S}election and \textbf{A}ggregation (VISA) to address the issue of inefficient inference stemming from excessive visual tokens in multimoal large…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Pengfei Jiang , Hanjun Li , Linglan Zhao , Fei Chao , Ke Yan , Shouhong Ding , Rongrong Ji

We study a crucial yet often overlooked issue inherent to Vision Transformers (ViTs): feature maps of these models exhibit grid-like artifacts, which hurt the performance of ViTs in downstream dense prediction tasks such as semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Jiawei Yang , Katie Z Luo , Jiefeng Li , Congyue Deng , Leonidas Guibas , Dilip Krishnan , Kilian Q Weinberger , Yonglong Tian , Yue Wang

Can we use sparse tokens for dense prediction, e.g., segmentation? Although token sparsification has been applied to Vision Transformers (ViT) to accelerate classification, it is still unknown how to perform segmentation from sparse tokens.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Lei Zhou , Huidong Liu , Joseph Bae , Junjun He , Dimitris Samaras , Prateek Prasanna

In Vision-Language Models (VLMs), processing a massive number of visual tokens incurs prohibitive computational overhead. While recent training-aware pruning methods attempt to selectively discard redundant tokens, they largely rely on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Mingzhe Huang , Weijun Wang , Xin Ding , Liang Mi , Hao Wen , Yuanchun Li , Lichen Pang , Shansong Yang , Yunxin Liu , Ting Cao