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A spectrahedron is the feasible set of a semidefinite program, SDP, i.e., the intersection of an affine set with the positive semidefinite cone. While strict feasibility is a generic property for random problems, there are many classes of…

Optimization and Control · Mathematics 2017-10-23 Stefan Sremac , Hugo Woerdeman , Henry Wolkowicz

The task of finding the optimal compression of a polyline with straight-line segments and arcs is performed in many applications, such as polyline compression, noise filtering, and feature recognition. Optimal compression algorithms find…

Computational Geometry · Computer Science 2018-11-15 Alexander Gribov

High-dimensional clustering analysis is a challenging problem in statistics and machine learning, with broad applications such as the analysis of microarray data and RNA-seq data. In this paper, we propose a new clustering procedure called…

Methodology · Statistics 2022-10-31 Tianqi Liu , Yu Lu , Biqing Zhu , Hongyu Zhao

"Frontalization" is the process of synthesizing frontal facing views of faces appearing in single unconstrained photos. Recent reports have suggested that this process may substantially boost the performance of face recognition systems.…

Computer Vision and Pattern Recognition · Computer Science 2014-12-01 Tal Hassner , Shai Harel , Eran Paz , Roee Enbar

Advances in face rotation, along with other face-based generative tasks, are more frequent as we advance further in topics of deep learning. Even as impressive milestones are achieved in synthesizing faces, the importance of preserving…

Computer Vision and Pattern Recognition · Computer Science 2020-12-09 Yu Yin , Joseph P. Robinson , Songyao Jiang , Yue Bai , Can Qin , Yun Fu

Manipulating latent code in generative adversarial networks (GANs) for facial image synthesis mainly focuses on continuous attribute synthesis (e.g., age, pose and emotion), while discrete attribute synthesis (like face mask and eyeglasses)…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Zhou Kangneng , Zhu Xiaobin , Gao Daiheng , Lee Kai , Li Xinjie , Yin Xu-Cheng

As improved versions of successive cancellation (SC) decoding algorithm, successive cancellation list (SCL) decoding and successive cancellation stack (SCS) decoding are used to improve the finite-length performance of polar codes. Unified…

Information Theory · Computer Science 2016-11-15 Kai Chen , Kai Niu , Jia-Ru Lin

In most recent substructuring methods, a fundamental role is played by the coarse space. For some of these methods (e.g. BDDC and FETI-DP), its definition relies on a 'minimal' set of coarse nodes (sometimes called corners) which assures…

Numerical Analysis · Mathematics 2013-11-12 Jakub Šístek , Marta Čertíková , Pavel Burda , Jaroslav Novotný

Efficient data compression is crucial for the storage and transmission of visual data. However, in facial expression recognition (FER) tasks, lossy compression often leads to feature degradation and reduced accuracy. To address these…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Xiumei Li , Marc Windsheimer , Misha Sadeghi , Björn Eskofier , André Kaup

Compression of point clouds has so far been confined to coding the positions of a discrete set of points in space and the attributes of those discrete points. We introduce an alternative approach based on volumetric functions, which are…

Image and Video Processing · Electrical Eng. & Systems 2018-10-02 Maja Krivokuća , Maxim Koroteev , Philip A. Chou

We propose an end-to-end attribute compression method for dense point clouds. The proposed method combines a frequency sampling module, an adaptive scale feature extraction module with geometry assistance, and a global hyperprior entropy…

Image and Video Processing · Electrical Eng. & Systems 2024-09-17 Xiaolong Mao , Hui Yuan , Tian Guo , Shiqi Jiang , Raouf Hamzaoui , Sam Kwong

In this paper we present Deep Secure Encoding: a framework for secure classification using deep neural networks, and apply it to the task of biometric template protection for faces. Using deep convolutional neural networks (CNNs), we learn…

Computer Vision and Pattern Recognition · Computer Science 2015-06-16 Rohit Pandey , Yingbo Zhou , Venu Govindaraju

Face recognition has recently become ubiquitous in many scenes for authentication or security purposes. Meanwhile, there are increasing concerns about the privacy of face images, which are sensitive biometric data that should be carefully…

Cryptography and Security · Computer Science 2022-01-31 Qi Zhao , Huanhao Li , Zhipeng Yu , Chi Man Woo , Tianting Zhong , Shengfu Cheng , Yuanjin Zheng , Honglin Liu , Jie Tian , Puxiang Lai

While faces of a polytope form a well structured lattice, in which faces of each possible dimension are present, this is not true for general compact convex sets. We address the question of what dimensional patterns are possible for the…

Metric Geometry · Mathematics 2017-03-23 Vera Roshchina , Tian Sang , David Yost

Hybrid approach has a special status among Face Recognition Systems as they combine different recognition approaches in an either serial or parallel to overcome the shortcomings of individual methods. This paper explores the area of Hybrid…

Computer Vision and Pattern Recognition · Computer Science 2014-01-03 Trupti M. Kodinariya

Convolutional neural network (CNN) based face detectors are inefficient in handling faces of diverse scales. They rely on either fitting a large single model to faces across a large scale range or multi-scale testing. Both are…

Computer Vision and Pattern Recognition · Computer Science 2017-06-30 Zekun Hao , Yu Liu , Hongwei Qin , Junjie Yan , Xiu Li , Xiaolin Hu

Recognizing wild faces is extremely hard as they appear with all kinds of variations. Traditional methods either train with specifically annotated variation data from target domains, or by introducing unlabeled target variation data to…

Computer Vision and Pattern Recognition · Computer Science 2020-02-28 Yichun Shi , Xiang Yu , Kihyuk Sohn , Manmohan Chandraker , Anil K. Jain

Transformers are central in modern natural language processing and computer vision applications. Despite recent works devoted to reducing the quadratic cost of such models (as a function of the sequence length), dealing with ultra long…

Computation and Language · Computer Science 2023-05-30 Zhanpeng Zeng , Cole Hawkins , Mingyi Hong , Aston Zhang , Nikolaos Pappas , Vikas Singh , Shuai Zheng

Deep convolutional neural networks (CNNs) have been successful in many tasks in machine vision, however, millions of weights in the form of thousands of convolutional filters in CNNs makes them difficult for human intepretation or…

Computer Vision and Pattern Recognition · Computer Science 2020-03-26 Reza Abbasi-Asl , Bin Yu

Image retrieval targets to find images from a database that are visually similar to the query image. Two-stage methods following retrieve-and-rerank paradigm have achieved excellent performance, but their separate local and global modules…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Yunquan Zhu , Xinkai Gao , Bo Ke , Ruizhi Qiao , Xing Sun
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