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In this work, we introduce OMG-Fuser, a fusion transformer-based network designed to extract information from various forensic signals to enable robust image forgery detection and localization. Our approach can operate with an arbitrary…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Dimitrios Karageorgiou , Giorgos Kordopatis-Zilos , Symeon Papadopoulos

Transformers have been successful for many natural language processing tasks. However, applying transformers to the video domain for tasks such as long-term video generation and scene understanding has remained elusive due to the high…

Machine Learning · Computer Science 2021-07-21 Yi-Fu Wu , Jaesik Yoon , Sungjin Ahn

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

Visual tokenizers map high-dimensional raw pixels into a compressed representation for downstream modeling. Beyond compression, tokenizers dictate what information is preserved and how it is organized. A de facto standard approach to video…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Andrei Atanov , Jesse Allardice , Roman Bachmann , Oğuzhan Fatih Kar , R Devon Hjelm , David Griffiths , Peter Fu , Afshin Dehghan , Amir Zamir

We introduce OmniSource, a novel framework for leveraging web data to train video recognition models. OmniSource overcomes the barriers between data formats, such as images, short videos, and long untrimmed videos for webly-supervised…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Haodong Duan , Yue Zhao , Yuanjun Xiong , Wentao Liu , Dahua Lin

Multi-view counting (MVC) methods have shown their superiority over single-view counterparts, particularly in situations characterized by heavy occlusion and severe perspective distortions. However, hand-crafted heuristic features and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Hong Mo , Xiong Zhang , Jianchao Tan , Cheng Yang , Qiong Gu , Bo Hang , Wenqi Ren

Computer vision has achieved remarkable success by (a) representing images as uniformly-arranged pixel arrays and (b) convolving highly-localized features. However, convolutions treat all image pixels equally regardless of importance;…

Computer Vision and Pattern Recognition · Computer Science 2020-11-23 Bichen Wu , Chenfeng Xu , Xiaoliang Dai , Alvin Wan , Peizhao Zhang , Zhicheng Yan , Masayoshi Tomizuka , Joseph Gonzalez , Kurt Keutzer , Peter Vajda

This paper presents Omni-View, which extends the unified multimodal understanding and generation to 3D scenes based on multiview images, exploring the principle that "generation facilitates understanding". Consisting of understanding model,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 JiaKui Hu , Shanshan Zhao , Qing-Guo Chen , Xuerui Qiu , Jialun Liu , Zhao Xu , Weihua Luo , Kaifu Zhang , Yanye Lu

Prior approaches injecting camera control into diffusion models have focused on specific subsets of 4D consistency tasks: novel view synthesis, text-to-video with camera control, image-to-video, amongst others. Therefore, these fragmented…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Xiang Fan , Sharath Girish , Vivek Ramanujan , Chaoyang Wang , Ashkan Mirzaei , Petr Sushko , Aliaksandr Siarohin , Sergey Tulyakov , Ranjay Krishna

Mainstream Video-Language Pre-training models \cite{actbert,clipbert,violet} consist of three parts, a video encoder, a text encoder, and a video-text fusion Transformer. They pursue better performance via utilizing heavier unimodal…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Alex Jinpeng Wang , Yixiao Ge , Rui Yan , Yuying Ge , Xudong Lin , Guanyu Cai , Jianping Wu , Ying Shan , Xiaohu Qie , Mike Zheng Shou

The area of temporally fine-grained video representation learning focuses on generating frame-by-frame representations for temporally dense tasks, such as fine-grained action phase classification and frame retrieval. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Matthew Walmer , Rose Kanjirathinkal , Kai Sheng Tai , Keyur Muzumdar , Taipeng Tian , Abhinav Shrivastava

Visual tokenizer is a critical component for vision generation. However, the existing tokenizers often face unsatisfactory trade-off between compression ratios and reconstruction fidelity. To fill this gap, we introduce a powerful and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Shaobin Zhuang , Yiwei Guo , Canmiao Fu , Zhipeng Huang , Zeyue Tian , Xiaohui Li , Fangyikang Wang , Ying Zhang , Chen Li , Yali Wang

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

Recent image generation schemes typically capture image distribution in a pre-constructed latent space relying on a frozen image tokenizer. Though the performance of tokenizer plays an essential role to the successful generation, its…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Kai Qiu , Xiang Li , Jason Kuen , Hao Chen , Xiaohao Xu , Jiuxiang Gu , Yinyi Luo , Bhiksha Raj , Zhe Lin , Marios Savvides

Recently, visually-situated text parsing (VsTP) has experienced notable advancements, driven by the increasing demand for automated document understanding and the emergence of Generative Large Language Models (LLMs) capable of processing…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Jianqiang Wan , Sibo Song , Wenwen Yu , Yuliang Liu , Wenqing Cheng , Fei Huang , Xiang Bai , Cong Yao , Zhibo Yang

We introduce the MAsked Generative VIdeo Transformer, MAGVIT, to tackle various video synthesis tasks with a single model. We introduce a 3D tokenizer to quantize a video into spatial-temporal visual tokens and propose an embedding method…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Lijun Yu , Yong Cheng , Kihyuk Sohn , José Lezama , Han Zhang , Huiwen Chang , Alexander G. Hauptmann , Ming-Hsuan Yang , Yuan Hao , Irfan Essa , Lu Jiang

Language models have been effectively applied to modeling natural signals, such as images, video, speech, and audio. A crucial component of these models is the codec tokenizer, which compresses high-dimensional natural signals into…

Audio and Speech Processing · Electrical Eng. & Systems 2025-02-26 Shengpeng Ji , Ziyue Jiang , Wen Wang , Yifu Chen , Minghui Fang , Jialong Zuo , Qian Yang , Xize Cheng , Zehan Wang , Ruiqi Li , Ziang Zhang , Xiaoda Yang , Rongjie Huang , Yidi Jiang , Qian Chen , Siqi Zheng , Zhou Zhao

This paper proposes a method for generating images of customized objects specified by users. The method is based on a general framework that bypasses the lengthy optimization required by previous approaches, which often employ a per-object…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Xuhui Jia , Yang Zhao , Kelvin C. K. Chan , Yandong Li , Han Zhang , Boqing Gong , Tingbo Hou , Huisheng Wang , Yu-Chuan Su

The vision transformer is a model that breaks down each image into a sequence of tokens with a fixed length and processes them similarly to words in natural language processing. Although increasing the number of tokens typically results in…

Machine Learning · Computer Science 2023-07-06 Qiqi Zhou , Yichen Zhu

The Open-MAGVIT2 project produces an open-source replication of Google's MAGVIT-v2 tokenizer, a tokenizer with a super-large codebook (i.e., $2^{18}$ codes), and achieves the state-of-the-art reconstruction performance on ImageNet and UCF…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Zhuoyan Luo , Fengyuan Shi , Yixiao Ge , Yujiu Yang , Limin Wang , Ying Shan