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Recently, autoregressive neural vocoders have provided remarkable performance in generating high-fidelity speech and have been able to produce synthetic speech in real-time. However, autoregressive neural vocoders such as WaveFlow are…

声音 · 计算机科学 2022-03-28 Manh Luong , Viet Anh Tran

Arbitrary-resolution image generation still remains a challenging task in AIGC, as it requires handling varying resolutions and aspect ratios while maintaining high visual quality. Existing transformer-based diffusion methods suffer from…

计算机视觉与模式识别 · 计算机科学 2024-10-31 Shuai Wang , Zexian Li , Tianhui Song , Xubin Li , Tiezheng Ge , Bo Zheng , Limin Wang

Denoising Diffusion Probabilistic Models (DDPMs) have established a new state-of-the-art in generative image synthesis, yet their deployment is hindered by significant computational overhead during inference, often requiring up to 1,000…

机器学习 · 计算机科学 2025-11-25 Srishti Gupta , Yashasvee Taiwade

Particle Image Velocimetry (PIV) is fundamental to fluid dynamics, yet deep learning applications face significant hurdles. A critical gap exists: the lack of comprehensive evaluation of how diverse optical flow models perform specifically…

计算机视觉与模式识别 · 计算机科学 2025-07-11 Zicheng Lin , Xiaoqiang Li , Yichao Wang , Chuang Zhu

Fast flow models accelerate the iterative sampling process by learning to directly predict ODE path integrals, enabling one-step or few-step generation. However, we argue that current fast-flow training paradigms suffer from two fundamental…

计算机视觉与模式识别 · 计算机科学 2026-02-09 Tianyi Zhang , Chengcheng Liu , Jinwei Chen , Chun-Le Guo , Chongyi Li , Ming-Ming Cheng , Bo Li , Peng-Tao Jiang

Flow Matching (FM) has recently emerged as a powerful approach for high-quality visual generation. However, their prohibitively slow inference due to a large number of denoising steps limits their potential use in real-time or interactive…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Divya Jyoti Bajpai , Shubham Agarwal , Apoorv Saxena , Kuldeep Kulkarni , Subrata Mitra , Manjesh Kumar Hanawal

Recent learning-based methods for event-based optical flow estimation utilize cost volumes for pixel matching but suffer from redundant computations and limited scalability to higher resolutions for flow refinement. In this work, we take…

计算机视觉与模式识别 · 计算机科学 2025-06-23 Daikun Liu , Lei Cheng , Teng Wang , changyin Sun

Auto-regressive neural sequence models have been shown to be effective across text generation tasks. However, their left-to-right decoding order prevents generation from being parallelized. Insertion Transformer (Stern et al., 2019) is an…

计算与语言 · 计算机科学 2023-02-01 Zhisong Zhang , Yizhe Zhang , Bill Dolan

Key-point-based scene understanding is fundamental for autonomous driving applications. At the same time, optical flow plays an important role in many vision tasks. However, due to the implicit bias of equal attention on all points, classic…

计算机视觉与模式识别 · 计算机科学 2023-09-25 Zhonghua Yi , Hao Shi , Kailun Yang , Qi Jiang , Yaozu Ye , Ze Wang , Huajian Ni , Kaiwei Wang

Estimating per-pixel motion between video frames, known as optical flow, is a long-standing problem in video understanding and analysis. Most contemporary optical flow techniques largely focus on addressing the cross-image matching with…

计算机视觉与模式识别 · 计算机科学 2022-02-09 Ao Luo , Fan Yang , Kunming Luo , Xin Li , Haoqiang Fan , Shuaicheng Liu

Deep learning-based image enhancement methods face a fundamental trade-off between computational efficiency and representational capacity. For example, although a conventional three-dimensional Look-Up Table (3D LUT) can process a degraded…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Liubing Hu , Chen Wu , Anrui Wang , Dianjie Lu , Guijuan Zhang , Zhuoran Zheng

Video relighting with background replacement is a challenging task critical for applications in film production and creative media. Existing methods struggle to balance temporal consistency, spatial fidelity, and illumination naturalness.…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Wenshuo Gao , Junyi Fan , Jiangyue Zeng , Shuai Yang

Denoising generative models, such as diffusion and flow-based models, produce high-quality samples but require many denoising steps due to discretization error. Flow maps, which estimate the average velocity between timesteps, mitigate this…

计算机视觉与模式识别 · 计算机科学 2025-10-29 Kyungmin Lee , Sihyun Yu , Jinwoo Shin

Convolutional neural networks (CNNs) have recently been very successful in a variety of computer vision tasks, especially on those linked to recognition. Optical flow estimation has not been among the tasks where CNNs were successful. In…

Recognizing target objects using an event-based camera draws more and more attention in recent years. Existing works usually represent the event streams into point-cloud, voxel, image, etc, and learn the feature representations using…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Chengguo Yuan , Yu Jin , Zongzhen Wu , Fanting Wei , Yangzirui Wang , Lan Chen , Xiao Wang

Pseudo-spectral method is one of the most accurate techniques for simulating turbulent flows. Fast Fourier transform (FFT) is an integral part of this method. In this paper, we present a new procedure to compute FFT in which we save…

数学软件 · 计算机科学 2014-06-24 A. G. Chatterjee , M. K. Verma , M. Chaudhuri

Autoregressive (AR) modeling has achieved remarkable success in natural language processing by enabling models to generate text with coherence and contextual understanding through next token prediction. Recently, in image generation, VAR…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Sucheng Ren , Qihang Yu , Ju He , Xiaohui Shen , Alan Yuille , Liang-Chieh Chen

In this paper we propose Flowtron: an autoregressive flow-based generative network for text-to-speech synthesis with control over speech variation and style transfer. Flowtron borrows insights from IAF and revamps Tacotron in order to…

声音 · 计算机科学 2020-07-17 Rafael Valle , Kevin Shih , Ryan Prenger , Bryan Catanzaro

We present Flowception, a novel non-autoregressive and variable-length video generation framework. Flowception learns a probability path that interleaves discrete frame insertions with continuous frame denoising. Compared to autoregressive…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Tariq Berrada Ifriqi , John Nguyen , Karteek Alahari , Jakob Verbeek , Ricky T. Q. Chen

Recent inversion-free, flow-based image editing methods such as FlowEdit leverages a pre-trained noise-to-image flow model such as Stable Diffusion 3, enabling text-driven manipulation by solving an ordinary differential equation (ODE).…

计算机视觉与模式识别 · 计算机科学 2025-07-29 Jeongsol Kim , Yeobin Hong , Jonghyun Park , Jong Chul Ye