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In this paper, we utilize weight gradients from backpropagation to characterize the representation space learned by deep learning algorithms. We demonstrate the utility of such gradients in applications including perceptual image quality…

Computer Vision and Pattern Recognition · Computer Science 2019-08-28 Gukyeong Kwon , Mohit Prabhushankar , Dogancan Temel , Ghassan AlRegib

We present a tomographic technique making use of a gigaelectronvolt electron beam for the measurement of the spatial material budget distribution of centimetre-sized objects. With simulation tools originating from high-energy physics…

Instrumentation and Detectors · Physics 2018-04-18 Hendrik Jansen , Paul Schuetze

We examine the possibility of using near-infrared scattering to constrain the local radiation field and the dust properties, for example, the size distribution of the grains, and maximum grain size. We use radiative transfer modelling to…

Astrophysics of Galaxies · Physics 2018-06-20 Mika Saajasto , Mika Juvela , Johanna Malinen

In this paper, we aim to take one step forward to the scenario where an adaptive subspace detection framework is required to detect subspace signals in non-stationary environments. Despite the fact that this scenario is more realistic, the…

Signal Processing · Electrical Eng. & Systems 2024-01-24 Aref Miri Rekavandi

Efficient clutter filtering for pulsed radar systems remains an open issue when employing pulse-to-pulse modulation and irregular pulse interval waveforms within the coherent processing interval. The range and Doppler domain should be…

Signal Processing · Electrical Eng. & Systems 2023-02-21 Pepijn B. Cox , Mario A. Coutino , Wim L. van Rossum

Robust grasping in cluttered environments remains an open challenge in robotics. While benchmark datasets have significantly advanced deep learning methods, they mainly focus on simplistic scenes with light occlusion and insufficient…

With current wide-field near-infrared (NIR) instruments the scattered light in the near-infrared can be mapped over large areas. Below A_V ~ 10 the surface brightness is directly proportional to the column density, and at slightly higher…

Astrophysics · Physics 2009-11-11 M. Juvela , V. -M. Pelkonen , P. Padoan , K. Mattila

Safe navigation in new environments requires autonomous vehicles and robots to accurately interpret their surroundings, relying on LiDAR scene segmentation, out-of-distribution (OOD) obstacle detection, and uncertainty computation. We…

Machine Learning · Computer Science 2024-10-14 Hanieh Shojaei , Qianqian Zou , Max Mehltretter

Ground penetrating radar (GPR) is an efficient technique used for rapidly recognizing embedded rebar in concrete structures. However, due to the difficulty in extracting signals from GPR data and the intrinsic coupling between the rebar…

Image and Video Processing · Electrical Eng. & Systems 2020-05-21 Zhongming Xiang , Ge Ou , Abbas Rashidi

We present a novel analytical framework to characterize the distribution of the conditional receiver operating characteristic (ROC) in radar systems operating within a realization of a Poisson field of interferers and clutters. While…

Information Theory · Computer Science 2025-05-28 Gourab Ghatak

Atmospheric turbulence causes significant image degradation due to pixel displacement (tilt) and blur, particularly in long-range imaging applications. In this paper, we propose a novel framework for atmospheric turbulence mitigation,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Hanliang Du , Zhangji Lu , Zewei Cai , Qijian Tang , Qifeng Yu , Xiaoli Liu

High-precision particle tracking devices allow for two-dimensional analyses of the material budget distribution of particle detectors and their periphery. In this contribution, the material budget of different targets is reconstructed from…

Instrumentation and Detectors · Physics 2019-03-12 Hendrik Jansen , Jan Dreyling-Eschweiler , Paul Schütze , Simon Spannagel

Automated systems designed for screening contraband items from the X-ray imagery are still facing difficulties with high clutter, concealment, and extreme occlusion. In this paper, we addressed this challenge using a novel multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Taimur Hassan , Samet Akcay , Mohammed Bennamoun , Salman Khan , Naoufel Werghi

In this work, we investigate the localization of targets in the presence of multiple scattering. We focus on the often omitted scenario in which measurement data is affected by multiple scattering, and a simpler model is employed in the…

Signal Processing · Electrical Eng. & Systems 2024-10-02 Eduardo Pérez , Sebastian Semper , Sayako Kodera , Florian Römer , Giovanni Del Galdo

Hydrogeological flow and transport strongly depend on the connectivity of subsurface properties. Uncertainty concerning the underlying geological setting, due to a lack of field data and prior knowledge, calls for an evaluation of…

Geophysics · Physics 2019-01-30 Guillaume Pirot , Emanuel Huber , James Irving , Niklas Linde

This paper presents a study on power grid disturbance classification by Deep Learning (DL). A real synchrophasor set composing of three different types of disturbance events from the Frequency Monitoring Network (FNET) is used. An image…

Machine Learning · Computer Science 2018-12-27 Yongli Zhu , Chengxi Liu , Kai Sun

Gaussian splatting has gained attention for its efficient representation and rendering of 3D scenes using continuous Gaussian primitives. However, it struggles with sparse-view inputs due to limited geometric and photometric information,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-18 Jianing Zhang , Yuchao Zheng , Ziwei Li , Qionghai Dai , Xiaoyun Yuan

Millimeter-wave (mmWave) radar systems, owing to their large bandwidth, provide fine range resolution that enables the observation of multiple scatterers originating from a single automotive target, commonly referred to as an extended…

Signal Processing · Electrical Eng. & Systems 2025-11-21 Vinay Kulkarni , V. V. Reddy

Algorithms for mutual interference mitigation and object parameter estimation are a key enabler for automotive applications of frequency-modulated continuous wave (FMCW) radar. In this paper, we introduce a signal separation method to…

Signal Processing · Electrical Eng. & Systems 2024-10-03 Mate Toth , Erik Leitinger , Klaus Witrisal

Clustering algorithms partition a dataset into groups of similar points. The primary contribution of this article is the Multiscale Spatially-Regularized Diffusion Learning (M-SRDL) clustering algorithm, which uses spatially-regularized…

Machine Learning · Computer Science 2022-04-08 Sam L. Polk , James M. Murphy