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The amount of data generated by Earth observation satellites can be enormous, which poses a great challenge to the satellite-to-ground connections with limited rate. This paper considers problem of efficient downlink communication of…

Signal Processing · Electrical Eng. & Systems 2023-11-28 Van-Phuc Bui , Thinh Q. Dinh , Israel Leyva-Mayorga , Shashi Raj Pandey , Eva Lagunas , Petar Popovski

Loop closure detection plays an important role in reducing localization drift in Simultaneous Localization And Mapping (SLAM). It aims to find repetitive scenes from historical data to reset localization. To tackle the loop closure problem,…

Computer Vision and Pattern Recognition · Computer Science 2021-02-09 Han Wang , Juncheng Li , Maopeng Ran , Lihua Xie

Nowadays, many places use security cameras. Unfortunately, when an incident occurs, these technologies are used to show past events. So it can be considered as a deterrence tool than a detection tool. In this article, we will propose a deep…

Computer Vision and Pattern Recognition · Computer Science 2024-10-24 Fabien Poirier

This paper presents an unsupervised approach that leverages raw aerial videos to learn to estimate planar homographic transformation between consecutive video frames. Previous learning-based estimators work on pairs of images to estimate…

Computer Vision and Pattern Recognition · Computer Science 2023-04-07 Pu Li , Xiaobai Liu

Frequency modulated continuous wave (FMCW) radar is emerging as a trendy radar system for synthetic aperture radar (SAR). This letter proposes a novel method for the extraction of the SAR image with the FMCW radar. The proposed method can…

Signal Processing · Electrical Eng. & Systems 2020-10-01 Junhyeong Park , Dae-Hwan Jung , Seong-Ook Park

This letter presents a method of synthetic aperture radar (SAR) image despeckling aimed to preserve the detail information while suppressing speckle noise. This method combines the nonlocal self-similarity partition and a proposed modified…

Computer Vision and Pattern Recognition · Computer Science 2016-11-24 Chengwei Sang , Hong Sun , Quisong Xia

In this paper, we propose a novel sparse coding and counting method under Bayesian framwork for visual tracking. In contrast to existing methods, the proposed method employs the combination of L0 and L1 norm to regularize the linear…

Computer Vision and Pattern Recognition · Computer Science 2017-02-08 Risheng Liu , Jing Wang , Yiyang Wang , Zhixun Su , Yu Cai

Assuming stationarity is unrealistic in many time series applications. A more realistic alternative is to allow for piecewise stationarity, where the model is allowed to change at given time points. In this article, the problem of detecting…

Methodology · Statistics 2017-08-10 Abolfazl Safikhani , Ali Shojaie

We developed a change detection method for the identification of ice block falls using NASA's HiRISE images of the north polar scarps on Mars. Our method is based on a Support Vector Machine (SVM), trained using Histograms of Oriented…

Computer Vision and Pattern Recognition · Computer Science 2018-12-21 L. Fanara , K. Gwinner , E. Hauber , J. Oberst

There are several methods for timing occultations. Many astronomers may not have access to standard video timing tools, but many of them have access to digital single-lens reflex (DSLR) cameras. In order to increase the accuracy of timing,…

Instrumentation and Methods for Astrophysics · Physics 2020-06-03 A. Halavati , A. Poro

This paper presents five different statistical methods for ground scene prediction (GSP) in wavelength-resolution synthetic aperture radar (SAR) images. The GSP image can be used as a reference image in a change detection algorithm yielding…

Image and Video Processing · Electrical Eng. & Systems 2022-07-26 B. G. Palm , D. I. Alves , M. I. Pettersson , V. T. Vu , R. Machado , R. J. Cintra , F. M. Bayer , P. Dammert , H. Hellsten

This paper presents a novel approach for video shot boundary detection. The proposed approach is based on split and merge concept. A fisher linear discriminant criterion is used to guide the process of both splitting and merging. For the…

Computer Vision and Pattern Recognition · Computer Science 2016-08-25 D. S. Guru , Mahamad Suhil , P. Lolika

Optical image data have been used by the Remote Sensing workforce to study land use and cover since such data is easily interpretable. Synthetic Aperture Radar (SAR) has the characteristic of obtaining images during all-day, all-weather and…

Image and Video Processing · Electrical Eng. & Systems 2021-06-04 Battula Balnarsaiah , G Rajitha

Image and video quality in Long Range Observation Systems (LOROS) suffer from atmospheric turbulence that causes small neighbourhoods in image frames to chaotically move in different directions and substantially hampers visual analysis of…

Optics · Physics 2010-07-27 Barak Fishbain , Leonid P. Yaroslavsky , Ianir A. Ideses

Information extraction from synthetic aperture radar (SAR) images is heavily impaired by speckle noise, hence despeckling is a crucial preliminary step in scene analysis algorithms. The recent success of deep learning envisions a new…

Image and Video Processing · Electrical Eng. & Systems 2020-07-07 Andrea Bordone Molini , Diego Valsesia , Giulia Fracastoro , Enrico Magli

Lane marking detection is fundamental for both advanced driving assistance systems. However, detecting lane is highly challenging when the visibility of a road lane marking is low due to real-life challenging environment and adverse…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Samia Sultana , Boshir Ahmed , Manoranjan Paul , Muhammad Rafiqul Islam , Shamim Ahmad

Synthetic aperture radar (SAR) has been extensively utilized in maritime domains due to its all-weather, all-day monitoring capabilities, particularly exhibiting significant value in ship detection. In recent years, deep learning methods…

Image and Video Processing · Electrical Eng. & Systems 2024-01-17 Hecheng Jia , Feng Xu

Detecting moving objects from ground-based videos is commonly achieved by using background subtraction techniques. Low-rank matrix decomposition inspires a set of state-of-the-art approaches for this task. It is integrated with structured…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Junpeng Zhang , Xiuping Jia , Jiankun Hu

Anomaly detection is essential for identifying rare and significant events across diverse domains such as finance, cybersecurity, and network monitoring. This paper presents Synthetic Anomaly Monitoring (SAM), an innovative approach that…

Machine Learning · Computer Science 2025-02-04 Emanuele Luzio , Moacir Antonelli Ponti

Synthetic aperture radar (SAR) can measure the phase with antenna and microwave, which cannot be directly extended to visible light imaging due to phase lost. In this letter, we reported an active remote sensing with visible light via…

Optics · Physics 2022-04-26 Meng Xiang , An Pan , Yiyi Zhao , Xuewu Fan , Hui Zhao , Chuang Li , Baoli Yao