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Building on the success of recent discriminative mid-level elements, we propose a surprisingly simple approach for object detection which performs comparable to the current state-of-the-art approaches on PASCAL VOC comp-3 detection…

Computer Vision and Pattern Recognition · Computer Science 2015-04-29 Aayush Bansal , Abhinav Shrivastava , Carl Doersch , Abhinav Gupta

Detection of hydroacoustic transmissions is a key enabling technology in applications such as depth measurements, detection of objects, and undersea mapping. To cope with the long channel delay spread and the low signal-to-noise ratio,…

Data Analysis, Statistics and Probability · Physics 2016-04-22 Roee Diamant

Image segmentation is a crucial step in a wide range of method image processing systems. It is useful in visualization of the different objects present in the image. In spite of the several methods available in the literature, image…

Computer Vision and Pattern Recognition · Computer Science 2013-07-18 I. Laurence Aroquiaraj , K. Thangavel

Conjugate gradient (CG) methods are widely acknowledged as efficient for minimizing continuously differentiable functions in Euclidean spaces. In recent years, various CG methods have been extended to Riemannian manifold optimization, but…

Optimization and Control · Mathematics 2026-05-26 Chunming Tang , Shaohui Liang , Huangyue Chen

This paper investigates the channel estimation for holographic MIMO systems by unmasking their distinctions from the conventional one. Specifically, we elucidate that the channel estimation, subject to holographic MIMO's electromagnetically…

Information Theory · Computer Science 2023-11-28 Yuanbin Chen , Ying Wang , Zhaocheng Wang , Zhu Han

In recent years, manifold learning has become increasingly popular as a tool for performing non-linear dimensionality reduction. This has led to the development of numerous algorithms of varying degrees of complexity that aim to recover man…

Machine Learning · Statistics 2013-06-03 Dominique Perraul-Joncas , Marina Meila

Mid-infrared photodetectors are susceptible to background noise since every object in the surroundings emits thermal radiation from different directions. To reduce this background noise and enhance signal-to-noise ratio of mid-infrared…

Optics · Physics 2025-04-30 Ziwei Fan , Taeseung Hwang , Yixin Chen , Zi Jing Wong

Muography, traditionally recognized as a potent instrument for imaging the internal structure of gigantic objects, has initialized various interdisciplinary applications. As the financial and labor costs of muography detector development…

Instrumentation and Detectors · Physics 2025-10-14 Tao Yu , Yunsong Ning , Yi Yuan , Shihan Zhao , Songran Qi , Minchen Sun , Yuye Li , Zhirui Liu , Aiyu Bai , Hesheng Liu , Yibo Lin , Geng Tuo , Ting On Chan , Zhou Zhou , Yu Chen , Yu Chen , Jian Tang

Accurate characterization of microcalcifications (MCs) in 2D full-field digital screening mammography is a necessary step towards reducing diagnostic uncertainty associated with the callback of women with suspicious MCs. Quantitative…

Image and Video Processing · Electrical Eng. & Systems 2021-02-02 Chrysostomos Marasinou , Bo Li , Jeremy Paige , Akinyinka Omigbodun , Noor Nakhaei , Anne Hoyt , William Hsu

A neighborhood restricted Mixed Gibbs Sampling (MGS) based approach is proposed for low-complexity high-order modulation large-scale Multiple-Input Multiple-Output (LS-MIMO) detection. The proposed LS-MIMO detector applies a neighborhood…

Information Theory · Computer Science 2021-04-20 Alex Mussi , Taufik Abrão

Many machine learning tasks, such as principal component analysis and low-rank matrix completion, give rise to manifold optimization problems. Although there is a large body of work studying the design and analysis of algorithms for…

Machine Learning · Computer Science 2024-06-13 Jiaojiao Zhang , Jiang Hu , Anthony Man-Cho So , Mikael Johansson

In Sound Event Detection (SED) systems, the lengths of median filters for post-processing have never been optimized during training due to several problems. No gradient is received by the lengths so they cannot be learned during…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-23 Fengnian Zhao , Ruwei Li , Xin Liu , Liwen Xu

We introduce H3DNet, which takes a colorless 3D point cloud as input and outputs a collection of oriented object bounding boxes (or BB) and their semantic labels. The critical idea of H3DNet is to predict a hybrid set of geometric…

Computer Vision and Pattern Recognition · Computer Science 2020-07-27 Zaiwei Zhang , Bo Sun , Haitao Yang , Qixing Huang

Deep Metric Learning (DML) methods have been proven relevant for visual similarity learning. However, they sometimes lack generalization properties because they are trained often using an inappropriate sample selection strategy or due to…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Jorge Gonzalez-Zapata , Ivan Reyes-Amezcua , Daniel Flores-Araiza , Mauricio Mendez-Ruiz , Gilberto Ochoa-Ruiz , Andres Mendez-Vazquez

Few-shot fine-grained image classification (FS-FGIC) presents a significant challenge, requiring models to distinguish visually similar subclasses with limited labeled examples. Existing methods have critical limitations: metric-based…

Computer Vision and Pattern Recognition · Computer Science 2025-06-26 Ning Luo , Meiyin Hu , Huan Wan , Yanyan Yang , Zhuohang Jiang , Xin Wei

Part-based representation has been proven to be effective for a variety of visual applications. However, automatic discovery of discriminative parts without object/part-level annotations is challenging. This paper proposes a discriminative…

Computer Vision and Pattern Recognition · Computer Science 2017-05-30 Xiaopeng Zhang , Hongkai Xiong , Weiyao Lin , Qi Tian

Data imbalance between common and rare diseases during model training often causes intelligent diagnosis systems to have biased predictions towards common diseases. The state-of-the-art approaches apply a two-stage learning framework to…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Chenghua Zeng , Huijuan Lu , Kanghao Chen , Ruixuan Wang , Wei-Shi Zheng

We consider functional outlier detection from a geometric perspective, specifically: for functional data sets drawn from a functional manifold which is defined by the data's modes of variation in amplitude and phase. Based on this manifold,…

Machine Learning · Statistics 2021-09-15 Moritz Herrmann , Fabian Scheipl

Image anomaly detection plays a vital role in applications such as industrial quality inspection and medical imaging, where it directly contributes to improving product quality and system reliability. However, existing methods often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Zekang Weng , Jinjin Shi , Jinwei Wang , Zeming Han

In this paper we propose spectral tools based on non-decimated complex wavelet transforms implemented by their matrix formulation. This non-decimated complex wavelet spectra utilizes both real and imaginary parts of complex-valued wavelet…

Applications · Statistics 2019-02-05 Taewoon Kong , Brani Vidakovic
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