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Normalizing flow is a generative modeling approach with efficient sampling. However, Flow-based models suffer two issues: 1) If the target distribution is manifold, due to the unmatch between the dimensions of the latent target distribution…

机器学习 · 计算机科学 2024-04-24 Qinglong Meng , Chongkun Xia , Xueqian Wang

Self-supervised representation learning is able to learn semantically meaningful features; however, much of its recent success relies on multiple crops of an image with very few objects. Instead of learning view-invariant representation…

计算机视觉与模式识别 · 计算机科学 2021-10-13 Yuwen Xiong , Mengye Ren , Wenyuan Zeng , Raquel Urtasun

Recently, the rectified flow (RF) has emerged as the new state-of-the-art among flow-based diffusion models due to its high efficiency advantage in straight path sampling, especially with the amazing images generated by a series of RF…

计算机视觉与模式识别 · 计算机科学 2025-06-11 Zhiyuan Ma , Ruixun Liu , Sixian Liu , Jianjun Li , Bowen Zhou

The "CNN-RNN" design pattern is increasingly widely applied in a variety of image annotation tasks including multi-label classification and captioning. Existing models use the weakly semantic CNN hidden layer or its transform as the image…

计算机视觉与模式识别 · 计算机科学 2016-11-18 Feng Liu , Tao Xiang , Timothy M. Hospedales , Wankou Yang , Changyin Sun

Convolutional neural networks (CNNs) have allowed remarkable advances in single image super-resolution (SISR) over the last decade. Most SR methods based on CNNs have focused on achieving performance gains in terms of quality metrics, such…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Wonkyung Lee , Junghyup Lee , Dohyung Kim , Bumsub Ham

Morphing is a long-standing problem in vision and computer graphics, requiring a time-dependent warping for feature alignment and a blending for smooth interpolation. Recently, multilayer perceptrons (MLPs) have been explored as implicit…

Deep learning based image compression has recently witnessed exciting progress and in some cases even managed to surpass transform coding based approaches that have been established and refined over many decades. However, state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2020-08-25 Leonhard Helminger , Abdelaziz Djelouah , Markus Gross , Christopher Schroers

Finding image correspondences remains a challenging problem in the presence of intra-class variations and large changes in scene layout.~Semantic flow methods are designed to handle images depicting different instances of the same object or…

计算机视觉与模式识别 · 计算机科学 2016-07-11 Bumsub Ham , Minsu Cho , Cordelia Schmid , Jean Ponce

Scene text image contains two levels of contents: visual texture and semantic information. Although the previous scene text recognition methods have made great progress over the past few years, the research on mining semantic information to…

计算机视觉与模式识别 · 计算机科学 2020-03-30 Deli Yu , Xuan Li , Chengquan Zhang , Junyu Han , Jingtuo Liu , Errui Ding

Learning accurate scene reconstruction without pose priors in neural radiance fields is challenging due to inherent geometric ambiguity. Recent development either relies on correspondence priors for regularization or uses off-the-shelf flow…

计算机视觉与模式识别 · 计算机科学 2025-03-14 Xunzhi Zheng , Dan Xu

Underwater images suffer from light refraction and absorption, which impairs visibility and interferes the subsequent applications. Existing underwater image enhancement methods mainly focus on image quality improvement, ignoring the effect…

计算机视觉与模式识别 · 计算机科学 2023-08-03 Zengxi Zhang , Zhiying Jiang , Jinyuan Liu , Xin Fan , Risheng Liu

Subspace clustering and feature extraction are two of the most commonly used unsupervised learning techniques in computer vision and pattern recognition. State-of-the-art techniques for subspace clustering make use of recent advances in…

计算机视觉与模式识别 · 计算机科学 2012-04-18 Risheng Liu , Zhouchen Lin , Fernando De la Torre , Zhixun Su

We address the problem of semantic correspondence, that is, establishing a dense flow field between images depicting different instances of the same object or scene category. We propose to use images annotated with binary foreground masks…

计算机视觉与模式识别 · 计算机科学 2019-04-08 Junghyup Lee , Dohyung Kim , Jean Ponce , Bumsub Ham

In this paper, we address the problem of image semantic communication in a multi-user deployment scenario and propose a federated learning (FL) strategy for a Swin Transformer-based semantic communication system (FSSC). Firstly, we…

人工智能 · 计算机科学 2024-08-01 Yuna Yan , Xin Zhang , Lixin Li , Wensheng Lin , Rui Li , Wenchi Cheng , Zhu Han

Flow matching has recently emerged as a powerful alternative to diffusion models, providing a continuous-time formulation for generative modeling and representation learning. Yet, we show that this framework suffers from a fundamental…

机器学习 · 计算机科学 2025-09-26 Weili Zeng , Yichao Yan

Conditioning diffusion and flow models have proven effective for super-resolving small-scale details in natural images.However, in physical sciences such as weather, super-resolving small-scale details poses significant challenges due to:…

计算机视觉与模式识别 · 计算机科学 2024-10-29 Stathi Fotiadis , Noah Brenowitz , Tomas Geffner , Yair Cohen , Michael Pritchard , Arash Vahdat , Morteza Mardani

The detection of manufacturing errors is crucial in fabrication processes to ensure product quality and safety standards. Since many defects occur very rarely and their characteristics are mostly unknown a priori, their detection is still…

计算机视觉与模式识别 · 计算机科学 2020-08-31 Marco Rudolph , Bastian Wandt , Bodo Rosenhahn

Most Neural Networks (NNs) for classification are trained using Cross-Entropy as a loss function. This approach requires the model to have an explicit classification layer. However, there exist alternative approaches, such as Contrastive…

机器学习 · 计算机科学 2026-04-27 Leonardo Arrighi , Julia Eva Belloni , Aurélie Gallet , Ivan Gentile , Matteo Lippi , Marco Zullich

Normalizing flows (NF) are a class of powerful generative models that have gained popularity in recent years due to their ability to model complex distributions with high flexibility and expressiveness. In this work, we introduce a new type…

机器学习 · 计算机科学 2023-06-08 Jonas Köhler , Michele Invernizzi , Pim de Haan , Frank Noé

With the development of earth observation technology, massive amounts of remote sensing (RS) images are acquired. To find useful information from these images, cross-modal RS image-voice retrieval provides a new insight. This paper aims to…

多媒体 · 计算机科学 2022-01-05 Hailong Ning , Bin Zhao , Yuan Yuan