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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

This prospective study proposes CoMatch, a novel semi-dense image matcher with dynamic covisibility awareness and bilateral subpixel accuracy. Firstly, observing that modeling context interaction over the entire coarse feature map elicits…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Zizhuo Li , Yifan Lu , Linfeng Tang , Shihua Zhang , Jiayi Ma

We propose Confidence-Guided Token Merging (Co-Me), an acceleration mechanism for visual geometric transformers without retraining or finetuning the base model. Co-Me distilled a light-weight confidence predictor to rank tokens by…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Yutian Chen , Yuheng Qiu , Ruogu Li , Ali Agha , Shayegan Omidshafiei , Jay Patrikar , Sebastian Scherer

Vision Transformers have demonstrated exceptional performance across various computer vision tasks, yet their quadratic computational complexity concerning token length remains a significant challenge. To address this, token reduction…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Dong-Jae Lee , Jiwan Hur , Jaehyun Choi , Jaemyung Yu , Junmo Kim

Mixup is a commonly adopted data augmentation technique for image classification. Recent advances in mixup methods primarily focus on mixing based on saliency. However, many saliency detectors require intense computation and are especially…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Hyeong Kyu Choi , Joonmyung Choi , Hyunwoo J. Kim

Query-based Vision Transformer segmentation models typically reconstruct dense spatial feature maps to predict masks, inheriting design patterns from convolutional architectures. We show that this explicit image-space reconstruction is not…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Calvin Galagain , Martyna Poreba , François Goulette

Recent advancements in vision-language models (VLMs) have expanded their potential for real-world applications, enabling these models to perform complex reasoning on images. In the widely used fully autoregressive transformer-based models…

Computer Vision and Pattern Recognition · Computer Science 2024-10-21 Yuxin Wen , Qingqing Cao , Qichen Fu , Sachin Mehta , Mahyar Najibi

The computational expense of redundant vision tokens in Large Vision-Language Models (LVLMs) has led many existing methods to compress them via a vision projector. However, this compression may lose visual information that is crucial for…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Ze Feng , Jiang-jiang Liu , Sen Yang , Lingyu Xiao , Zhibin Quan , Zhenhua Feng , Wankou Yang , Jingdong Wang

Prior works have proposed several strategies to reduce the computational cost of self-attention mechanism. Many of these works consider decomposing the self-attention procedure into regional and local feature extraction procedures that each…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Ting Yao , Yehao Li , Yingwei Pan , Yu Wang , Xiao-Ping Zhang , Tao Mei

In this work, we present HieraTok, a novel multi-scale Vision Transformer (ViT)-based tokenizer that overcomes the inherent limitation of modeling single-scale representations. This is realized through two key designs: (1) multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Cong Chen , Ziyuan Huang , Cheng Zou , Muzhi Zhu , Kaixiang Ji , Jiajia Liu , Jingdong Chen , Hao Chen , Chunhua Shen

Video large language models (LLMs) achieve strong video understanding by leveraging a large number of spatio-temporal tokens, but suffer from quadratic computational scaling with token count. To address this, we propose a training-free…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Jeongseok Hyun , Sukjun Hwang , Su Ho Han , Taeoh Kim , Inwoong Lee , Dongyoon Wee , Joon-Young Lee , Seon Joo Kim , Minho Shim

Vision-language (VL) learning requires extensive visual perception capabilities, such as fine-grained object recognition and spatial perception. Recent works typically rely on training huge models on massive datasets to develop these…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Yuanchen Wu , Junlong Du , Ke Yan , Shouhong Ding , Xiaoqiang Li

Vision Transformers (ViTs) achieve state-of-the-art performance in semantic segmentation but are hindered by high computational and memory costs. To address this, we propose STEP (SuperToken and Early-Pruning), a hybrid token-reduction…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Michal Szczepanski , Martyna Poreba , Karim Haroun

Vision Transformers (ViTs) mark a revolutionary advance in neural networks with their token mixer's powerful global context capability. However, the pairwise token affinity and complex matrix operations limit its deployment on…

Computer Vision and Pattern Recognition · Computer Science 2024-12-16 Tianfang Zhang , Lei Li , Yang Zhou , Wentao Liu , Chen Qian , Jenq-Neng Hwang , Xiangyang Ji

Attention is sparse in vision transformers. We observe the final prediction in vision transformers is only based on a subset of most informative tokens, which is sufficient for accurate image recognition. Based on this observation, we…

Computer Vision and Pattern Recognition · Computer Science 2021-10-27 Yongming Rao , Wenliang Zhao , Benlin Liu , Jiwen Lu , Jie Zhou , Cho-Jui Hsieh

Existing audio-driven visual dubbing methods have achieved great success. Despite this, we observe that the semantic ambiguity between spatial and temporal domains significantly degrades the synthesis stability for the dynamic faces. We…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Zijun Ding , Mingdie Xiong , Congcong Zhu , Jingrun Chen

CutMix is a popular augmentation technique commonly used for training modern convolutional and transformer vision networks. It was originally designed to encourage Convolution Neural Networks (CNNs) to focus more on an image's global…

Computer Vision and Pattern Recognition · Computer Science 2023-04-20 Jihao Liu , Boxiao Liu , Hang Zhou , Hongsheng Li , Yu Liu

Vision-Language Models (VLMs) have become essential backbones of modern multimodal intelligence, yet their outputs remain prone to hallucination-plausible text misaligned with visual inputs. Existing alignment approaches often rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Kejia Chen , Jiawen Zhang , Jiacong Hu , Kewei Gao , Jian Lou , Zunlei Feng , Mingli Song

Token pruning is essential for enhancing the computational efficiency of vision-language models (VLMs), particularly for video-based tasks where temporal redundancy is prevalent. Prior approaches typically prune tokens either (1) within the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Jianrui Zhang , Yue Yang , Rohun Tripathi , Winson Han , Ranjay Krishna , Christopher Clark , Yong Jae Lee , Sangho Lee

Vision Mamba has shown close to state of the art performance on computer vision tasks, drawing much interest in increasing it's efficiency. A promising approach is token reduction (that has been successfully implemented in ViTs). Pruning…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Mingjia Shi , Yuhao Zhou , Ruiji Yu , Zekai Li , Zhiyuan Liang , Xuanlei Zhao , Xiaojiang Peng , Shanmukha Ramakrishna Vedantam , Wangbo Zhao , Kai Wang , Yang You