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Recent progress in diffusion models significantly advances various image generation tasks. However, the current mainstream approach remains focused on building task-specific models, which have limited efficiency when supporting a wide range…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Zhong-Yu Li , Ruoyi Du , Juncheng Yan , Le Zhuo , Qilong Wu , Zhen Li , Peng Gao , Zhanyu Ma , Ming-Ming Cheng

It is a challenging task to learn rich and multi-scale spatiotemporal semantics from high-dimensional videos, due to large local redundancy and complex global dependency between video frames. The recent advances in this research have been…

Computer Vision and Pattern Recognition · Computer Science 2022-02-09 Kunchang Li , Yali Wang , Peng Gao , Guanglu Song , Yu Liu , Hongsheng Li , Yu Qiao

Normalizing flows are a class of probabilistic generative models which allow for both fast density computation and efficient sampling and are effective at modelling complex distributions like images. A drawback among current methods is…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Jason J. Yu , Konstantinos G. Derpanis , Marcus A. Brubaker

Normalizing Flows (NFs) learn invertible mappings between the data and a Gaussian distribution. Prior works usually suffer from two limitations. First, they add random noise to training samples or VAE latents as data augmentation,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Qinyu Zhao , Guangting Zheng , Tao Yang , Rui Zhu , Xingjian Leng , Stephen Gould , Liang Zheng

Many state-of-the-art computer vision architectures leverage U-Net for its adaptability and efficient feature extraction. However, the multi-resolution convolutional design often leads to significant computational demands, limiting…

Image and Video Processing · Electrical Eng. & Systems 2024-11-18 Sanghyun Byun , Kayvan Shah , Ayushi Gang , Christopher Apton , Jacob Song , Woo Seong Chung

Recent advancements in discrete token-based speech generation have highlighted the importance of token-to-waveform generation for audio quality, particularly in real-time interactions. Traditional frameworks integrating semantic tokens with…

Sound · Computer Science 2025-07-02 Dake Guo , Jixun Yao , Linhan Ma , He Wang , Lei Xie

Comprehensive visual, geometric, and semantic understanding of a 3D scene is crucial for successful execution of robotic tasks, especially in unstructured and complex environments. Additionally, to make robust decisions, it is necessary for…

Robotics · Computer Science 2026-03-13 Christian Maurer , Snehal Jauhri , Sophie Lueth , Georgia Chalvatzaki

Few-step generation has been a long-standing goal, with recent one-step generation methods exemplified by MeanFlow achieving remarkable results. Existing research on MeanFlow primarily focuses on class-to-image generation. However, an…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Chenxi Zhao , Chen Zhu , Xiaokun Feng , Aiming Hao , Jiashu Zhu , Jiachen Lei , Jiahong Wu , Xiangxiang Chu , Jufeng Yang

The remarkable success of Large Language Models (LLMs) has extended to the multimodal domain, achieving outstanding performance in image understanding and generation. Recent efforts to develop unified Multimodal Large Language Models…

Computer Vision and Pattern Recognition · Computer Science 2024-12-13 Hao Li , Changyao Tian , Jie Shao , Xizhou Zhu , Zhaokai Wang , Jinguo Zhu , Wenhan Dou , Xiaogang Wang , Hongsheng Li , Lewei Lu , Jifeng Dai

In this paper, we present a vocoder-free framework for audio super-resolution that employs a flow matching generative model to capture the conditional distribution of complex-valued spectral coefficients. Unlike conventional two-stage…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-06 Woongjib Choi , Sangmin Lee , Hyungseob Lim , Hong-Goo Kang

Image processing, including image restoration, image enhancement, etc., involves generating a high-quality clean image from a degraded input. Deep learning-based methods have shown superior performance for various image processing tasks in…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Huiyu Duan , Xiongkuo Min , Sijing Wu , Wei Shen , Guangtao Zhai

The unified streaming and non-streaming two-pass (U2) end-to-end model for speech recognition has shown great performance in terms of streaming capability, accuracy, real-time factor (RTF), and latency. In this paper, we present U2++, an…

Sound · Computer Science 2022-01-03 Di Wu , Binbin Zhang , Chao Yang , Zhendong Peng , Wenjing Xia , Xiaoyu Chen , Xin Lei

Recent works have shown that optical flow can be learned by deep networks from unlabelled image pairs based on brightness constancy assumption and smoothness prior. Current approaches additionally impose an augmentation regularization term…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Lingtong Kong , Jie Yang

Diffusion models, and their generalization, flow matching, have had a remarkable impact on the field of media generation. Here, the conventional approach is to learn the complex mapping from a simple source distribution of Gaussian noise to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Qihao Liu , Xi Yin , Alan Yuille , Andrew Brown , Mannat Singh

Visual tokenizers play a crucial role in diffusion models. The dimensionality of latent space governs both reconstruction fidelity and the semantic expressiveness of the latent feature. However, a fundamental trade-off is inherent between…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Qingyu Shi , Size Wu , Jinbin Bai , Kaidong Yu , Yujing Wang , Yunhai Tong , Xiangtai Li , Xuelong Li

Unifying text-image contrastive learning and text-to-image (T2I) generation in a single end-to-end model is challenging because the two objectives demand opposing masking regimes: contrastive alignment needs near-complete visible tokens,…

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

Automatic black-and-white image sequence colorization while preserving character and object identity (ID) is a complex task with significant market demand, such as in cartoon or comic series colorization. Despite advancements in visual…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Junhao Zhuang , Xuan Ju , Zhaoyang Zhang , Yong Liu , Shiyi Zhang , Chun Yuan , Ying Shan

Unitary Synthesis, the decomposition of a unitary matrix into a sequence of quantum gates, is a fundamental challenge in quantum compilation. Prevailing reinforcement learning (RL) approaches are often hampered by sparse reward signals,…

Quantum Physics · Physics 2026-03-05 Inhoe Koo , Hyunho Cha , Jungwoo Lee

Subword tokenization requires balancing computational efficiency and vocabulary coverage, which often leads to suboptimal performance on languages and scripts not prioritized during training. We propose to augment pretrained language models…

Computation and Language · Computer Science 2025-08-12 Jonas F. Lotz , Hendra Setiawan , Stephan Peitz , Yova Kementchedjhieva