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Contrary to optical images, Synthetic Aperture Radar (SAR) images are in different electromagnetic spectrum where the human visual system is not accustomed to. Thus, with more and more SAR applications, the demand for enhanced high-quality…

Image and Video Processing · Electrical Eng. & Systems 2018-07-23 Dongyang Ao , Corneliu Octavian Dumitru , Gottfried Schwarz , Mihai Datcu

With the massive proliferation of data-driven algorithms, such as deep learning-based approaches, the availability of high-quality data is of great interest. Volumetric data is very important in medicine, as it ranges from disease diagnoses…

Computer Vision and Pattern Recognition · Computer Science 2024-02-15 André Ferreira , Jianning Li , Kelsey L. Pomykala , Jens Kleesiek , Victor Alves , Jan Egger

This paper observes that there is an issue of high frequencies missing in the discriminator of standard GAN, and we reveal it stems from downsampling layers employed in the network architecture. This issue makes the generator lack the…

Computer Vision and Pattern Recognition · Computer Science 2020-12-16 Yuanqi Chen , Ge Li , Cece Jin , Shan Liu , Thomas Li

A major obstacle to the development of effective monocular depth estimation algorithms is the difficulty in obtaining high-quality depth data that corresponds to collected RGB images. Collecting this data is time-consuming and costly, and…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Seungyeop Lee , Knut Peterson , Solmaz Arezoomandan , Bill Cai , Peihan Li , Lifeng Zhou , David Han

Seismic imaging in challenging sedimentary basins and reservoirs requires acquiring, processing, and imaging very large volumes of data (tens of terabytes). To reduce the cost of acquisition and the time from acquiring the data to producing…

Information Theory · Computer Science 2025-09-10 Oscar López , Rajiv Kumar , Nick Moldoveanu , Felix Herrmann

Automatic sensor-based detection of motor failures such as bearing faults is crucial for predictive maintenance in various industries. Numerous methodologies have been developed over the years to detect bearing faults. Despite the…

Since the introduction of Generative Adversarial Networks (GANs) in speech synthesis, remarkable achievements have been attained. In a thorough exploration of vocoders, it has been discovered that audio waveforms can be generated at speeds…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-14 Yubing Cao , Yongming Li , Liejun Wang , Yinfeng Yu

Spectrum coexistence is essential for next generation (NextG) systems to share the spectrum with incumbent (primary) users and meet the growing demand for bandwidth. One example is the 3.5 GHz Citizens Broadband Radio Service (CBRS) band,…

Networking and Internet Architecture · Computer Science 2022-12-29 Yi Shi , Yalin E. Sagduyu

Recognizing seismic waves immediately is very important for the realization of efficient disaster prevention. Generally these systems consist of a network of seismic detectors that send real time data to a central server. The server…

Neural and Evolutionary Computing · Computer Science 2017-07-07 Ruggero Micheletto , Ahyi Kim

We demonstrate training of a Generative Adversarial Network (GAN) for prediction of optical property maps (scattering and absorption) using spatial frequency domain imaging (SFDI) image data sets generated synthetically with free…

Image and Video Processing · Electrical Eng. & Systems 2022-10-04 Ahmed Osman , Jane Crowley , George Gordon

Seismic intensity prediction from early or initial seismic waves received by a few seismic stations can enhance Earthquake Early Warning (EEW) systems, particularly in ground motion-based approaches like PLUM. While many operational EEW…

Signal Processing · Electrical Eng. & Systems 2024-04-01 Rafid Umayer Murshed , Kazi Noshin , Md. Anu Zakaria , Md. Forkan Uddin , A. F. M. Saiful Amin , Mohammed Eunus Ali

Side-scan sonar (SSS) is a lightweight acoustic sensor that is frequently deployed on autonomous underwater vehicles (AUVs) to provide high-resolution seafloor images. However, using side-scan images to perform simultaneous localization and…

Robotics · Computer Science 2023-12-22 Jun Zhang , Yiping Xie , Li Ling , John Folkesson

The utility of Synthetic Aperture Radar (SAR) imagery in remote sensing and satellite image analysis is well established, offering robustness under various weather and lighting conditions. However, SAR images, characterized by their unique…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Grant Rosario , David Noever

Most GAN(Generative Adversarial Network)-based approaches towards high-fidelity waveform generation heavily rely on discriminators to improve their performance. However, GAN methods introduce much uncertainty into the generation process and…

Sound · Computer Science 2022-03-22 Shengyuan Xu , Wenxiao Zhao , Jing Guo

Automatic Speaker Verification (ASV) technology has become commonplace in virtual assistants. However, its performance suffers when there is a mismatch between the train and test domains. Mixed bandwidth training, i.e., pooling training…

Audio and Speech Processing · Electrical Eng. & Systems 2022-09-07 Saurabh Kataria , Jesús Villalba , Laureano Moro-Velázquez , Piotr Żelasko , Najim Dehak

Synthetic data is an emerging technology that can significantly accelerate the development and deployment of AI machine learning pipelines. In this work, we develop high-fidelity time-series generators, the SigWGAN, by combining…

Machine Learning · Computer Science 2021-11-03 Hao Ni , Lukasz Szpruch , Marc Sabate-Vidales , Baoren Xiao , Magnus Wiese , Shujian Liao

We propose a novel data-driven approach for high-resolution bathymetric reconstruction from sidescan. Sidescan sonar (SSS) intensities as a function of range do contain some information about the slope of the seabed. However, that…

Robotics · Computer Science 2022-06-17 Yiping Xie , Nils Bore , John Folkesson

High-quality recordings of radio frequency (RF) emissions from commercial communication hardware in realistic environments are often needed to develop and assess spectrum-sharing technologies and practices, e.g., for training and testing…

Signal Processing · Electrical Eng. & Systems 2022-02-21 Jack Sklar , Adam Wunderlich

Human-centered data collection is typically costly and implicates issues of privacy. Various solutions have been proposed in the literature to reduce this cost, such as crowdsourced data collection, or the use of semi-supervised algorithms.…

Signal Processing · Electrical Eng. & Systems 2021-05-07 Mohammad Nabati , Hojjat Navidan , Reza Shahbazian , Seyed Ali Ghorashi , David Windridge

An effective perception system is a fundamental component for farming robots, as it enables them to properly perceive the surrounding environment and to carry out targeted operations. The most recent methods make use of state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Mulham Fawakherji , Ciro Potena , Alberto Pretto , Domenico D. Bloisi , Daniele Nardi