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As one of the most important underwater sensing technologies, forward-looking sonar exhibits unique imaging characteristics. Sonar images are often affected by severe speckle noise, low texture contrast, acoustic shadows, and geometric…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Ping Guo , Chengzhou Li , Guanchen Meng , Qi Jia , Jinyuan Liu , Zhu Liu , Yu Liu , Zhongxuan Luo , Xin Fan

In this work, we present an in-depth and systematic analysis using tools such as local interpretable model-agnostic explanations (LIME) (arXiv:1602.04938) and divergence measures to analyze what changes lead to improvement in performance in…

Image and Video Processing · Electrical Eng. & Systems 2021-03-18 Sarah Walker , Joshua Peeples , Jeff Dale , James Keller , Alina Zare

Accurate estimates of salmon escapement - the number of fish migrating upstream to spawn - are key data for conservation and fishery management. Existing methods for salmon counting using high-resolution imaging sonar hardware are…

Computer Vision and Pattern Recognition · Computer Science 2025-02-10 Kai Van Brunt , Justin Kay , Timm Haucke , Pietro Perona , Grant Van Horn , Sara Beery

With the commissioning of the refurbished adaptive secondary mirror (ASM) for the 6.5-meter MMT Observatory under way, special consideration had to be made to properly calibrate the mirror response functions to generate an interaction…

Instrumentation and Methods for Astrophysics · Physics 2024-08-14 Jacob Taylor , Robin Swanson , Parker Levesque , Masen Lamb , Amali Vaz , Manny Montoya , Andrew Gardner , Katie M. Morzinski , Suresh Sivanandam

Existing supervised action segmentation methods depend on the quality of frame-wise classification using attention mechanisms or temporal convolutions to capture temporal dependencies. Even boundary detection-based methods primarily depend…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Kamel Aouaidjia , Wenhao Zhang , Aofan Li , Chongsheng Zhang

Recent self-supervised stereo matching methods have made significant progress, but their performance significantly degrades under adverse weather conditions such as night, rain, and fog. We identify two primary weaknesses contributing to…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Yun Wang , Junjie Hu , Junhui Hou , Chenghao Zhang , Renwei Yang , Dapeng Oliver Wu

Basketball broadcast footage is traditionally captured at 30-60 fps, limiting viewers' ability to appreciate rapid plays such as dunks and crossovers. We present a real-time slow-motion synthesis system that produces high-quality…

Image and Video Processing · Electrical Eng. & Systems 2025-11-18 Jiantang Huang

Spaceborne synthetic aperture radar (SAR) can provide accurate images of the ocean surface roughness day-or-night in nearly all weather conditions, being an unique asset for many geophysical applications. Considering the huge amount of data…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Nicolae-Cătălin Ristea , Andrei Anghel , Mihai Datcu , Bertrand Chapron

Compressed Sensing MRI reconstructs images of the body's internal anatomy from undersampled measurements, thereby reducing scan time. Recently, deep learning has shown great potential for reconstructing high-fidelity images from highly…

Image and Video Processing · Electrical Eng. & Systems 2025-04-07 Armeet Singh Jatyani , Jiayun Wang , Aditi Chandrashekar , Zihui Wu , Miguel Liu-Schiaffini , Bahareh Tolooshams , Anima Anandkumar

This paper presents AquaSignal, a modular and scalable pipeline for preprocessing, denoising, classification, and novelty detection of underwater acoustic signals. Designed to operate effectively in noisy and dynamic marine environments,…

Sound · Computer Science 2025-05-21 Eirini Panteli , Paulo E. Santos , Nabil Humphrey

The core problem in multi-view anomaly detection is to represent local neighborhoods of normal instances consistently across all views. Recent approaches consider a representation of local neighborhood in each view independently, and then…

Machine Learning · Computer Science 2025-12-08 Yang Xu , Hang Zhang , Yixiao Ma , Ye Zhu , Kai Ming Ting

In the field of deep-sea exploration, sonar is presently the only efficient long-distance sensing device. The complicated underwater environment, such as noise interference, low target intensity or background dynamics, has brought many…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Xiaoteng Zhou , Changli Yu , Xin Yuan , Haijun Feng , Yang Xu

Multivariate time series data appear often as realizations of non-stationary processes where the covariance matrix or spectral matrix smoothly evolve over time. Most of the current approaches estimate the time-varying spectral properties…

Methodology · Statistics 2023-12-04 Anass El Yaagoubi Bourakna , Marco Pinto , Norbert Fortin , Hernando Ombao

While existing audio watermarking techniques have achieved strong robustness against traditional digital signal processing (DSP) attacks, they remain vulnerable to neural resynthesis. This occurs because modern neural audio codecs act as…

Change detection from satellite images typically incurs a delay ranging from several hours up to days because of latency in downlinking the acquired images and generating orthorectified image products at the ground stations; this may…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Gabriele Inzerillo , Diego Valsesia , Aniello Fiengo , Enrico Magli

Compressing images at extremely low bitrates (< 0.1 bpp) has always been a challenging task since the quality of reconstruction significantly reduces due to the strong imposed constraint on the number of bits allocated for the compressed…

Image and Video Processing · Electrical Eng. & Systems 2020-06-16 Suraj Kiran Raman , Aditya Ramesh , Vijayakrishna Naganoor , Shubham Dash , Giridharan Kumaravelu , Honglak Lee

Discrete speech representation learning has recently attracted increasing interest in both acoustic and semantic modeling. Existing approaches typically encode 16 kHz waveforms into discrete tokens at a rate of 25 or 50 tokens per second.…

Computation and Language · Computer Science 2025-09-03 Jialong Zuo , Guangyan Zhang , Minghui Fang , Shengpeng Ji , Xiaoqi Jiao , Jingyu Li , Yiwen Guo , Zhou Zhao

Video compression is a critical component of Internet video delivery. Recent work has shown that deep learning techniques can rival or outperform human-designed algorithms, but these methods are significantly less compute and…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Mehrdad Khani , Vibhaalakshmi Sivaraman , Mohammad Alizadeh

Image Phase Alignment Super-Sampling (ImPASS) is a computational imaging algorithm for converting a sequence of displaced low-resolution images into a single high-resolution image. The method consists of a unique combination of Phase…

Optics · Physics 2025-09-01 James N. Caron

Time-of-Flight (ToF) depth sensing camera is able to obtain depth maps at a high frame rate. However, its low resolution and sensitivity to the noise are always a concern. A popular solution is upsampling the obtained noisy low resolution…

Computer Vision and Pattern Recognition · Computer Science 2015-06-18 Wei Liu , Yijun Li , Xiaogang Chen , Jie Yang , Qiang Wu , Jingyi Yu
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