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In this paper we propose a global optimization-based approach to jointly matching a set of images. The estimated correspondences simultaneously maximize pairwise feature affinities and cycle consistency across multiple images. Unlike…

Computer Vision and Pattern Recognition · Computer Science 2015-12-03 Xiaowei Zhou , Menglong Zhu , Kostas Daniilidis

Regularization plays a pivotal role when facing the challenge of solving ill-posed inverse problems, where the number of observations is smaller than the ambient dimension of the object to be estimated. A line of recent work has studied…

Optimization and Control · Mathematics 2014-07-03 Samuel Vaiter , Mohammad Golbabaee , Jalal M. Fadili , Gabriel Peyré

Proper regularization is critical for speeding up training, improving generalization performance, and learning compact models that are cost efficient. We propose and analyze regularized gradient descent algorithms for learning shallow…

Machine Learning · Computer Science 2018-06-08 Samet Oymak

We introduce a method for fast estimation of data-adapted, spatio-temporally dependent regularization parameter-maps for variational image reconstruction, focusing on total variation (TV)-minimization. Our approach is inspired by recent…

We investigate two new optimization problems -- minimizing a submodular function subject to a submodular lower bound constraint (submodular cover) and maximizing a submodular function subject to a submodular upper bound constraint…

Data Structures and Algorithms · Computer Science 2013-11-12 Rishabh Iyer , Jeff Bilmes

Weakly supervised object localization (WSOL) aims to localize target objects in images using only image-level labels. Despite recent progress, many approaches still rely on multi-stage pipelines or full fine-tuning of large backbones, which…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Arian Sabaghi , José Oramas

Weakly supervised object localization (WSOL) aims to localize objects using only image-level labels. Recently a new paradigm has emerged by generating a foreground prediction map (FPM) to achieve localization task. Existing FPM-based…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Pingyu Wu , Wei Zhai , Yang Cao

Ring artifacts in computed tomography images, arising from the undesirable responses of detector units, significantly degrade image quality and diagnostic reliability. To address this challenge, we propose a dual-domain regularization model…

Image and Video Processing · Electrical Eng. & Systems 2024-03-18 Hongyang Zhu , Xin Lu , Yanwei Qin , Xinran Yu , Tianjiao Sun , Yunsong Zhao

It is well known that popular optimization techniques can lead to overfitting or even a lack of convergence altogether; thus, practitioners often utilize ad hoc regularization terms added to the energy functional. When carefully crafted,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Michael Bao , David Hyde , Xinru Hua , Ronald Fedkiw

Weakly supervised object localization (WSOL) is a challenging problem when given image category labels but requires to learn object localization models. Optimizing a convolutional neural network (CNN) for classification tends to activate…

Computer Vision and Pattern Recognition · Computer Science 2021-08-05 Wei Gao , Fang Wan , Xingjia Pan , Zhiliang Peng , Qi Tian , Zhenjun Han , Bolei Zhou , Qixiang Ye

Many computer vision systems require low-cost segmentation algorithms based on deep learning, either because of the enormous size of input images or limited computational budget. Common solutions uniformly downsample the input images to…

Computer Vision and Pattern Recognition · Computer Science 2022-08-19 Chen Jin , Ryutaro Tanno , Thomy Mertzanidou , Eleftheria Panagiotaki , Daniel C. Alexander

We investigate whether region-based representations are effective for recognition. Regions were once a mainstay in recognition approaches, but pixel and patch-based features are now used almost exclusively. We show that recent…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Michal Shlapentokh-Rothman , Ansel Blume , Yao Xiao , Yuqun Wu , Sethuraman T , Heyi Tao , Jae Yong Lee , Wilfredo Torres , Yu-Xiong Wang , Derek Hoiem

The remarkable generative capabilities of denoising diffusion models have raised new concerns regarding the authenticity of the images we see every day on the Internet. However, the vast majority of existing deepfake detection models are…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Dragos Tantaru , Elisabeta Oneata , Dan Oneata

In this study, the effects of different class labels created as a result of multiple conceptual meanings on localization using Weakly Supervised Learning presented on Car Dataset. In addition, the generated labels are included in the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Cenk Bircanoglu

Hand-eye calibration is the problem of estimating the spatial transformation between a reference frame, usually the base of a robot arm or its gripper, and the reference frame of one or multiple cameras. Generally, this calibration is…

Robotics · Computer Science 2023-07-31 Daniele Evangelista , Emilio Olivastri , Davide Allegro , Emanuele Menegatti , Alberto Pretto

Video-based person re-identification matches video clips of people across non-overlapping cameras. Most existing methods tackle this problem by encoding each video frame in its entirety and computing an aggregate representation across all…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Shuang Li , Slawomir Bak , Peter Carr , Xiaogang Wang

This paper addresses the problem of discovering the objects present in a collection of images without any supervision. We build on the optimization approach of Vo et al. (CVPR'19) with several key novelties: (1) We propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Huy V. Vo , Patrick Pérez , Jean Ponce

In general, the problem of non-rigid registration is about matching two different scans of a dynamic object taken at two different points in time. These scans can undergo both rigid motions and non-rigid deformations. Since new parts of the…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Alireza Ahmadi

We aim to localize objects in images using image-level supervision only. Previous approaches to this problem mainly focus on discriminative object regions and often fail to locate precise object boundaries. We address this problem by…

Computer Vision and Pattern Recognition · Computer Science 2016-09-15 Vadim Kantorov , Maxime Oquab , Minsu Cho , Ivan Laptev

Equivariant and invariant deep learning models have been developed to exploit intrinsic symmetries in data, demonstrating significant effectiveness in certain scenarios. However, these methods often suffer from limited representation…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Yulu Bai , Jiahong Fu , Qi Xie , Deyu Meng