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Large language models have demonstrated impressive universal capabilities across a wide range of open-ended tasks and have extended their utility to encompass multimodal conversations. However, existing methods encounter challenges in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-08 Peng Jin , Ryuichi Takanobu , Wancai Zhang , Xiaochun Cao , Li Yuan

Generative modeling has recently achieved remarkable success across text, image, and audio domains, demonstrating powerful capabilities for unified representation learning. However, audio generation models still face challenges in terms of…

Sound · Computer Science 2025-10-31 Chengwei Liu , Haoyin Yan , Shaofei Xue , Xiaotao Liang , Yinghao Liu , Zheng Xue , Gang Song , Boyang Zhou

Self-attention-based vision transformers (ViTs) have emerged as a highly competitive architecture in computer vision. Unlike convolutional neural networks (CNNs), ViTs are capable of global information sharing. With the development of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-25 Zhenzhen Chu , Jiayu Chen , Cen Chen , Chengyu Wang , Ziheng Wu , Jun Huang , Weining Qian

Visual autoregressive (AR) generation offers a promising path toward unifying vision and language models, yet its performance remains suboptimal against diffusion models. Prior work often attributes this gap to tokenizer limitations and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Qiyuan He , Yicong Li , Haotian Ye , Jinghao Wang , Xinyao Liao , Pheng-Ann Heng , Stefano Ermon , James Zou , Angela Yao

In this work, we interpret the representations of multi-object scenes in vision encoders through the lens of structured representations. Structured representations allow modeling of individual objects distinctly and their flexible use based…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Tarun Khajuria , Braian Olmiro Dias , Marharyta Domnich , Jaan Aru

The success of VLMs often relies on the dynamic high-resolution schema that adaptively augments the input images to multiple crops, so that the details of the images can be retained. However, such approaches result in a large number of…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Jiayi Han , Liang Du , Yiwen Wu , Xiangguo Zhou , Hongwei Du , Weibo Zheng

Vision transformers have achieved remarkable progress in vision tasks such as image classification and detection. However, in instance-level image retrieval, transformers have not yet shown good performance compared to convolutional…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Chull Hwan Song , Jooyoung Yoon , Shunghyun Choi , Yannis Avrithis

Autoregressive image generation aims to predict the next token based on previous ones. However, this process is challenged by the bidirectional dependencies inherent in conventional image tokenizations, which creates a fundamental…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Pingyu Wu , Kai Zhu , Yu Liu , Longxiang Tang , Jian Yang , Yansong Peng , Wei Zhai , Yang Cao , Zheng-Jun Zha

We propose V2Flow, a novel tokenizer that produces discrete visual tokens capable of high-fidelity reconstruction, while ensuring structural and latent distribution alignment with the vocabulary space of large language models (LLMs).…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Guiwei Zhang , Tianyu Zhang , Mohan Zhou , Yalong Bai , Biye Li

Video large language models (Video-LLMs) have demonstrated strong capabilities in video understanding tasks. However, their practical deployment is still hindered by the inefficiency introduced by processing massive amounts of visual…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Hesong Wang , Xin Jin , Lu Lu , Chenhaowen Li , Jian Chen , Qiang Liu , Huan Wang

Most existing methods in vision-language retrieval match two modalities by either comparing their global feature vectors which misses sufficient information and lacks interpretability, detecting objects in images or videos and aligning the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Xiaohan Zou , Changqiao Wu , Lele Cheng , Zhongyuan Wang

Learning efficient and expressive visual representation has long been the pursuit of computer vision research. While Vision Transformers (ViTs) gradually replace traditional Convolutional Neural Networks (CNNs) as more scalable vision…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Quan Kong , Yanru Xiao , Yuhao Shen , Cong Wang

Holistic 3D scene understanding involves capturing and parsing unstructured 3D environments. Due to the inherent complexity of the real world, existing models have predominantly been developed and limited to be task-specific. We introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-12-19 Sebastian Koch , Johanna Wald , Hidenobu Matsuki , Pedro Hermosilla , Timo Ropinski , Federico Tombari

Adapting decoder-only multimodal large language models (MLLMs) for unified multimodal retrieval faces two structural gaps. First, existing methods rely on implicit pooling, which overloads the hidden state of a standard vocabulary token…

Image-text retrieval is a central problem for understanding the semantic relationship between vision and language, and serves as the basis for various visual and language tasks. Most previous works either simply learn coarse-grained…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Chong Liu , Yuqi Zhang , Hongsong Wang , Weihua Chen , Fan Wang , Yan Huang , Yi-Dong Shen , Liang Wang

In this work, we reveal the limitations of visual tokenizers and VAEs in preserving fine-grained features, and propose a benchmark to evaluate reconstruction performance for two challenging visual contents: text and face. Visual tokenizers…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Junfeng Wu , Dongliang Luo , Weizhi Zhao , Zhihao Xie , Yuanhao Wang , Junyi Li , Xudong Xie , Yuliang Liu , Xiang Bai

Vision Transformers (ViTs) have achieved remarkable success in various computer vision tasks. However, ViTs have a huge computational cost due to their inherent reliance on multi-head self-attention (MHSA), prompting efforts to accelerate…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Seungdong Yoa , Seungjun Lee , Hyeseung Cho , Bumsoo Kim , Woohyung Lim

Most existing image tokenizers encode images into a fixed number of tokens or patches, overlooking the inherent variability in image complexity. To address this, we introduce Content-Adaptive Tokenizer (CAT), which dynamically adjusts…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Junhong Shen , Kushal Tirumala , Michihiro Yasunaga , Ishan Misra , Luke Zettlemoyer , Lili Yu , Chunting Zhou

In this paper, we introduce SemHiTok, a unified image Tokenizer via Semantic-Guided Hierarchical codebook that provides consistent discrete representations for multimodal understanding and generation. Recently, unified image tokenizers have…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Zisheng Chen , Chunwei Wang , Runhui Huang , Hongbin Xu , Xiuwei Chen , Jun Zhou , Jianhua Han , Hang Xu , Xiaodan Liang

Vision transformers (ViTs) have achieved promising results on a variety of Computer Vision tasks, however their quadratic complexity in the number of input tokens has limited their application specially in resource-constrained settings.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Wentao Zhu