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Image segmentation algorithms often depend on appearance models that characterize the distribution of pixel values in different image regions. We describe a new approach for estimating appearance models directly from an image, without…

Computer Vision and Pattern Recognition · Computer Science 2021-09-16 Jeova F. S. Rocha Neto , Pedro Felzenszwalb , Marilyn Vazquez

In this paper we propose a new method of estimation for discrete choice demand models when individual level data are available. The method employs a two-step procedure. Step 1 predicts the choice probabilities as functions of the observed…

Applications · Statistics 2020-10-19 Nick Doudchenko , Evgeni Drynkin

Most image matching methods perform poorly when encountering large scale changes in images. To solve this problem, firstly, we propose a scale-difference-aware image matching method (SDAIM) that reduces image scale differences before local…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Yujie Fu , Yihong Wu

Feature selection is playing an increasingly significant role with respect to many computer vision applications spanning from object recognition to visual object tracking. However, most of the recent solutions in feature selection are not…

Computer Vision and Pattern Recognition · Computer Science 2017-07-25 Giorgio Roffo , Simone Melzi , Umberto Castellani , Alessandro Vinciarelli

Building upon score-based learning, new interest in stochastic localization techniques has recently emerged. In these models, one seeks to noise a sample from the data distribution through a stochastic process, called observation process,…

Machine Learning · Statistics 2026-02-24 Louis Grenioux , Maxence Noble , Marylou Gabrié , Alain Oliviero Durmus

We extend the knockoffs method for selecting predictors to clustered data (cross-sectional or repeated measures). In the setting of clustered data, variable selection is complex because some predictors are measured at the observation level…

Methodology · Statistics 2026-02-24 Silvia Bacci , Leonardo Grilli , Carla Rampichini

The use of deep neural networks to make high risk decisions creates a need for global and local explanations so that users and experts have confidence in the modeling algorithms. We introduce a novel technique to find global and local…

Machine Learning · Computer Science 2019-08-15 Xochitl Watts , Freddy Lecue

We propose a scalable, provably accurate method for localizing an unknown number of multiple axis-aligned anomalous patches in spatial data under a general class of spatial dependence. Motivated by the practical need to detect localized…

Methodology · Statistics 2026-03-31 Soham Bonnerjee , Sayar Karmakar , George Michailidis

In this work, we tackle the problem of estimating a camera capability to preserve fine texture details at a given lighting condition. Importantly, our texture preservation measurement should coincide with human perception. Consequently, we…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Marcelin Tworski , Stéphane Lathuilière , Salim Belkarfa , Attilio Fiandrotti , Marco Cagnazzo

We present X-SLAM, a real-time dense differentiable SLAM system that leverages the complex-step finite difference (CSFD) method for efficient calculation of numerical derivatives, bypassing the need for a large-scale computational graph.…

Robotics · Computer Science 2024-05-06 Zhexi Peng , Yin Yang , Tianjia Shao , Chenfanfu Jiang , Kun Zhou

We address the issue of detecting changes of models that lie behind a data stream. The model refers to an integer-valued structural information such as the number of free parameters in a parametric model. Specifically we are concerned with…

Machine Learning · Computer Science 2023-02-24 Kenji Yamanishi , So Hirai

Camera localization aims to estimate 6 DoF camera poses from RGB images. Traditional methods detect and match interest points between a query image and a pre-built 3D model. Recent learning-based approaches encode scene structures into a…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Shitao Tang , Chengzhou Tang , Rui Huang , Siyu Zhu , Ping Tan

Scale-sensitive object detection remains a challenging task, where most of the existing methods could not learn it explicitly and are not robust to scale variance. In addition, the most existing methods are less efficient during training or…

Computer Vision and Pattern Recognition · Computer Science 2019-09-16 Junran Peng , Ming Sun , Zhaoxiang Zhang , Tieniu Tan , Junjie Yan

Slice sampling is a well-established Markov chain Monte Carlo method for (approximate) sampling of target distributions which are only known up to a normalizing constant. The method is based on choosing a new state on a slice, i.e., a…

Computation · Statistics 2025-12-22 Kevin Bitterlich , Daniel Rudolf , Björn Sprungk

A novel algorithm is proposed for segmenting an image into multiple levels using its mean and variance. Starting from the extreme pixel values at both ends of the histogram plot, the algorithm is applied recursively on sub-ranges computed…

Computer Vision and Pattern Recognition · Computer Science 2007-05-23 Siddharth Arora , Jayadev Acharya , Amit Verma , Prasanta K. Panigrahi

State-of-the-art detection systems are generally evaluated on their ability to exhaustively retrieve objects densely distributed in the image, across a wide variety of appearances and semantic categories. Orthogonal to this, many real-life…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Amelie Royer , Christoph H. Lampert

The dominant approach for learning local patch descriptors relies on small image regions whose scale must be properly estimated a priori by a keypoint detector. In other words, if two patches are not in correspondence, their descriptors…

Computer Vision and Pattern Recognition · Computer Science 2019-08-16 Patrick Ebel , Anastasiia Mishchuk , Kwang Moo Yi , Pascal Fua , Eduard Trulls

Multiscale phenomena that evolve on multiple distinct timescales are prevalent throughout the sciences. It is often the case that the governing equations of the persistent and approximately periodic fast scales are prescribed, while the…

Chaotic Dynamics · Physics 2020-08-19 Jason J. Bramburger , Daniel Dylewsky , J. Nathan Kutz

Convolutional neural networks (CNNs) have achieved superior performance but still lack clarity about the nature and properties of feature extraction. In this paper, by analyzing the sensitivity of neural networks to frequencies and scales,…

Computer Vision and Pattern Recognition · Computer Science 2023-02-27 Liangqi Zhang , Yihao Luo , Xiang Cao , Haibo Shen , Tianjiang Wang

We analyze the coordinate descent method with a new coordinate selection strategy, called volume sampling. This strategy prescribes selecting subsets of variables of certain size proportionally to the determinants of principal submatrices…

Optimization and Control · Mathematics 2020-04-30 Anton Rodomanov , Dmitry Kropotov