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It is a challenging task to learn discriminative representation from images and videos, due to large local redundancy and complex global dependency in these visual data. Convolution neural networks (CNNs) and vision transformers (ViTs) have…

Computer Vision and Pattern Recognition · Computer Science 2024-10-28 Kunchang Li , Yali Wang , Junhao Zhang , Peng Gao , Guanglu Song , Yu Liu , Hongsheng Li , Yu Qiao

Conventional Vision-Language Models(VLMs) typically utilize a fixed number of vision tokens, regardless of task complexity. This one-size-fits-all strategy introduces notable inefficiencies: using excessive tokens leads to unnecessary…

Computer Vision and Pattern Recognition · Computer Science 2025-04-07 Junshan Hu , Jialiang Mao , Zhikang Liu , Zhongpu Xia , Peng Jia , Xianpeng Lang

Unified Multimodal Large Language Models (MLLMs) require a visual representation that simultaneously supports high-fidelity reconstruction, complex semantic extraction, and generative suitability. However, existing visual tokenizers…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Shaobin Zhuang , Yuang Ai , Jiaming Han , Weijia Mao , Xiaohui Li , Fangyikang Wang , Xiao Wang , Yan Li , Shanchuan Lin , Kun Xu , Zhenheng Yang , Huaibo Huang , Xiangyu Yue , Hao Chen , Yali Wang

We present JanusFlow, a powerful framework that unifies image understanding and generation in a single model. JanusFlow introduces a minimalist architecture that integrates autoregressive language models with rectified flow, a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yiyang Ma , Xingchao Liu , Xiaokang Chen , Wen Liu , Chengyue Wu , Zhiyu Wu , Zizheng Pan , Zhenda Xie , Haowei Zhang , Xingkai yu , Liang Zhao , Yisong Wang , Jiaying Liu , Chong Ruan

Visual tokenization via auto-encoding empowers state-of-the-art image and video generative models by compressing pixels into a latent space. Although scaling Transformer-based generators has been central to recent advances, the tokenizer…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Philippe Hansen-Estruch , David Yan , Ching-Yao Chung , Orr Zohar , Jialiang Wang , Tingbo Hou , Tao Xu , Sriram Vishwanath , Peter Vajda , Xinlei Chen

Diffusion transformers (DiTs) adopt Patchify, mapping patch representations to token representations through linear projections, to adjust the number of tokens input to DiT blocks and thus the computation cost. Instead of a single patch…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Hui Li , Baoyou Chen , Liwei Zhang , Jiaye Li , Jingdong Wang , Siyu Zhu

Latent diffusion models (LDMs) enable high-fidelity synthesis by operating in learned latent spaces. However, training state-of-the-art LDMs requires complex staging: a tokenizer must be trained first, before the diffusion model can be…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Shivam Duggal , Xingjian Bai , Zongze Wu , Richard Zhang , Eli Shechtman , Antonio Torralba , Phillip Isola , William T. Freeman

Flow Matching has emerged as a powerful framework for learning continuous transformations between distributions, enabling high-fidelity generative modeling. This work introduces Symmetrical Flow Matching (SymmFlow), a new formulation that…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Francisco Caetano , Christiaan Viviers , Peter H. N. De With , Fons van der Sommen

Consistency models (CMs) have shown promise in the efficient generation of both image and text. This raises the natural question of whether we can learn a unified CM for efficient multimodal generation (e.g., text-to-image) and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Chenkai Xu , Xu Wang , Zhenyi Liao , Yishun Li , Tianqi Hou , Zhijie Deng

Vision-language large models are moving toward the unification of visual understanding and visual generation tasks. However, whether generation can enhance understanding is still under-explored on large data scale. In this work, we analysis…

Computation and Language · Computer Science 2026-01-01 Fengjiao Chen , Minhao Jing , Weitao Lu , Yan Feng , Xiaoyu Li , Xuezhi Cao

Unified multimodal Large Language Models (LLMs) that can both understand and generate visual content hold immense potential. However, existing open-source models often suffer from a performance trade-off between these capabilities. We…

In this paper, we propose \textbf{UniCode}, a novel approach within the domain of multimodal large language models (MLLMs) that learns a unified codebook to efficiently tokenize visual, text, and potentially other types of signals. This…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Sipeng Zheng , Bohan Zhou , Yicheng Feng , Ye Wang , Zongqing Lu

Text-to-image generation has greatly advanced content creation, yet accurately rendering visual text remains a key challenge due to blurred glyphs, semantic drift, and limited style control. Existing methods often rely on pre-rendered glyph…

Computer Vision and Pattern Recognition · Computer Science 2025-07-03 Yuanrui Wang , Cong Han , Yafei Li , Zhipeng Jin , Xiawei Li , SiNan Du , Wen Tao , Yi Yang , Shuanglong Li , Chun Yuan , Liu Lin

Although existing unified models achieve strong performance in vision-language understanding and text-to-image generation, they remain limited in addressing image perception and manipulation -- capabilities increasingly demanded in…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Bin Lin , Zongjian Li , Xinhua Cheng , Yuwei Niu , Yang Ye , Xianyi He , Shenghai Yuan , Wangbo Yu , Shaodong Wang , Yunyang Ge , Yatian Pang , Li Yuan

Unified multimodal models typically rely on pretrained vision encoders and use separate visual representations for understanding and generation, creating misalignment between the two tasks and preventing fully end-to-end optimization from…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Zhiheng Liu , Weiming Ren , Xiaoke Huang , Shoufa Chen , Tianhong Li , Mengzhao Chen , Yatai Ji , Sen He , Jonas Schult , Belinda Zeng , Tao Xiang , Wenhu Chen , Ping Luo , Luke Zettlemoyer , Yuren Cong

Tokenizer, serving as a translator to map the intricate visual data into a compact latent space, lies at the core of visual generative models. Based on the finding that existing tokenizers are tailored to image or video inputs, this paper…

Computer Vision and Pattern Recognition · Computer Science 2024-06-14 Junke Wang , Yi Jiang , Zehuan Yuan , Binyue Peng , Zuxuan Wu , Yu-Gang Jiang

Image fusion aims to integrate complementary information from multiple source images to produce a more informative and visually consistent representation, benefiting both human perception and downstream vision tasks. Despite recent…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Xingyuan Li , Songcheng Du , Yang Zou , HaoYuan Xu , Zhiying Jiang , Jinyuan Liu

Given datasets from multiple domains, a key challenge is to efficiently exploit these data sources for modeling a target domain. Variants of this problem have been studied in many contexts, such as cross-domain translation and domain…

Machine Learning · Computer Science 2019-12-24 Aditya Grover , Christopher Chute , Rui Shu , Zhangjie Cao , Stefano Ermon

Flow matching has emerged as a powerful generative framework, with recent few-step methods achieving remarkable inference acceleration. However, we identify a critical yet overlooked limitation: these models suffer from severe diversity…

Machine Learning · Computer Science 2026-04-15 Yexiong Lin , Jia Shi , Shanshan Ye , Wanyu Wang , Yu Yao , Tongliang Liu

Generative models have become increasingly powerful tools for robot motion generation, enabling flexible and multimodal trajectory generation across various tasks. Yet, most existing approaches remain limited in handling multiple types of…

Robotics · Computer Science 2026-01-15 Zewen Yang , Xiaobing Dai , Dian Yu , Zhijun Li , Majid Khadiv , Sandra Hirche , Sami Haddadin