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Speech tokenizers are a key building block of fully discrete Speech LLMs.Existing tokenizers either prioritize semantic encoding,fuse semantic content with acoustic style inseparably,or achieve incomplete semantic-acoustic…

Sound · Computer Science 2026-05-28 Hanlin Zhang , Daxin Tan , Dehua Tao , Xiao Chen , Haochen Tan , Yunhe Li , Yuchen Cao , Linqi Song

Instance segmentation in videos, which aims to segment and track multiple objects in video frames, has garnered a flurry of research attention in recent years. In this paper, we present a novel weakly supervised framework with…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Liqi Yan , Qifan Wang , Siqi Ma , Jingang Wang , Changbin Yu

Autoregressive (AR) language models rely on causal tokenization, but extending this paradigm to vision remains non-trivial. Current visual tokenizers either flatten 2D patches into non-causal sequences or enforce heuristic orderings that…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Yitong Chen , Zuxuan Wu , Xipeng Qiu , Yu-Gang Jiang

Due to the resource-intensive nature of training vision-language models on expansive video data, a majority of studies have centered on adapting pre-trained image-language models to the video domain. Dominant pipelines propose to tackle the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Tongjia Chen , Hongshan Yu , Zhengeng Yang , Zechuan Li , Wei Sun , Chen Chen

Real-time transmission of visual data over wireless networks remains highly challenging, even when leveraging advanced deep neural networks, particularly under severe channel conditions such as limited bandwidth and weak connectivity. In…

Information Theory · Computer Science 2025-05-06 Zhenyu Liu , Yi Ma , Rahim Tafazolli

Video shadow detection confronts two entwined difficulties: distinguishing shadows from complex backgrounds and modeling dynamic shadow deformations under varying illumination. To address shadow-background ambiguity, we leverage linguistic…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Zhicheng Li , Kunyang Sun , Rui Yao , Hancheng Zhu , Fuyuan Hu , Jiaqi Zhao , Zhiwen Shao , Yong Zhou

We consider the problem of localizing a spatio-temporal tube in a video corresponding to a given text query. This is a challenging task that requires the joint and efficient modeling of temporal, spatial and multi-modal interactions. To…

Computer Vision and Pattern Recognition · Computer Science 2022-06-10 Antoine Yang , Antoine Miech , Josef Sivic , Ivan Laptev , Cordelia Schmid

Semantic communication (SC) aims to reduce transmission overhead by conveying task-relevant information rather than raw data. However, existing SC approaches for video largely focus on pixel-level reconstruction or rely on complex…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Phuc H. Nguyen , Trung T. Nguyen , Quy N. Duong , Van-Dinh Nguyen

Spatio-Temporal Video Grounding requires jointly localizing target objects across both temporal and spatial dimensions based on natural language queries, posing fundamental challenges for existing Multimodal Large Language Models (MLLMs).…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Xuezhen Tu , Jingyu Wu , Fangyu Kang , Qingpeng Nong , Kaijin Zhang , Chaoyue Niu , Fan Wu

We describe a new spatio-temporal video autoencoder, based on a classic spatial image autoencoder and a novel nested temporal autoencoder. The temporal encoder is represented by a differentiable visual memory composed of convolutional long…

Machine Learning · Computer Science 2016-09-02 Viorica Patraucean , Ankur Handa , Roberto Cipolla

Vision Transformer models have shown impressive effectiveness in the surgical video understanding tasks through long-range dependency modeling. However, current methods suffer from prohibitive computational costs due to processing massive…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Xixi Jiang , Chen Yang , Dong Zhang , Pingcheng Dong , Xin Yang , Kwang-Ting Cheng

This paper presents a multimodal framework that attempts to unify visual understanding and generation within a shared discrete semantic representation. At its core is the Text-Aligned Tokenizer (TA-Tok), which converts images into discrete…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Jiaming Han , Hao Chen , Yang Zhao , Hanyu Wang , Qi Zhao , Ziyan Yang , Hao He , Xiangyu Yue , Lu Jiang

Speech tokenization enables discrete representation and facilitates speech language modeling. However, existing neural codecs capture low-level acoustic features, overlooking the semantic and contextual cues inherent to human speech. While…

Image tokenizers form the foundation of modern text-to-image generative models but are notoriously difficult to train. Furthermore, most existing text-to-image models rely on large-scale, high-quality private datasets, making them…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Dongwon Kim , Ju He , Qihang Yu , Chenglin Yang , Xiaohui Shen , Suha Kwak , Liang-Chieh Chen

Token merging has emerged as an effective strategy to accelerate Vision Transformers (ViT) by reducing computational costs. However, existing methods primarily rely on the visual token's feature similarity for token merging, overlooking the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-26 Hsiang-Wei Huang , Wenhao Chai , Kuang-Ming Chen , Cheng-Yen Yang , Jenq-Neng Hwang

Unlike language tasks, where the output space is usually limited to a set of tokens, the output space of visual tasks is more complicated, making it difficult to build a unified visual model for various visual tasks. In this paper, we seek…

Computer Vision and Pattern Recognition · Computer Science 2023-02-15 Jia Ning , Chen Li , Zheng Zhang , Zigang Geng , Qi Dai , Kun He , Han Hu

Autoregressive image generation models like Janus-Pro produce high-quality images, but at the significant cost of high memory and ever-growing computational demands due to the large number of visual tokens. While KV cache compression has…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Siyong Jian , Huan Wang

We completely discard the conventional spatial prior in image representation and introduce a novel discrete visual tokenizer: Self-consistency Tokenizer (Selftok). At its design core, we compose an autoregressive (AR) prior -- mirroring the…

We introduce CompTok, a training framework for learning visual tokenizers whose tokens are enhanced for compositionality. CompTok uses a token-conditioned diffusion decoder. By employing an InfoGAN-style objective, where we train a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Bingchen Zhao , Qiushan Guo , Ye Wang , Yixuan Huang , Zhonghua Zhai , Yu Tian

Existing semantic segmentation approaches either aim to improve the object's inner consistency by modeling the global context, or refine objects detail along their boundaries by multi-scale feature fusion. In this paper, a new paradigm for…

Computer Vision and Pattern Recognition · Computer Science 2020-08-19 Xiangtai Li , Xia Li , Li Zhang , Guangliang Cheng , Jianping Shi , Zhouchen Lin , Shaohua Tan , Yunhai Tong