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Remote sensing change detection (RSCD) is a complex task, where changes often appear at different scales and orientations. Convolutional neural networks (CNNs) are good at capturing local spatial patterns but cannot model global semantics…

计算机视觉与模式识别 · 计算机科学 2026-01-19 Humza Naveed , Xina Zeng , Mitch Bryson , Nagita Mehrseresht

Redshift surveys are a powerful tool of modern cosmology. We discuss two aspects of their power to map the distribution of mass and light in the universe: (1) measuring the mass distribution extending into the infall regions of rich…

宇宙学与河外天体物理 · 物理学 2011-10-10 Margaret J. Geller , Antonaldo Diaferio , Michael J. Kurtz

NEMESISPY is a Python package developed to perform parametric atmospheric modelling and radiative transfer calculation for the retrievals of exoplanetary spectra. It is a recent development of the well-established Fortran NEMESIS library…

地球与行星天体物理 · 物理学 2024-07-10 Jingxuan Yang , Juan Alday , Patrick Irwin

Filament finders are limited, among other things, by the abundance of spectroscopic redshift data. As there are proportionally more photometric redshift data than spectroscopic, we aim to use photometric data to improve and expand the areas…

宇宙学与河外天体物理 · 物理学 2023-02-15 Moorits Mihkel Muru , Elmo Tempel

We describe a new program for determining photometric redshifts, dubbed EAZY. The program is optimized for cases where spectroscopic redshifts are not available, or only available for a biased subset of the galaxies. The code combines…

天体物理学 · 物理学 2009-11-13 Gabriel B. Brammer , Pieter G. van Dokkum , Paolo Coppi

Remote sensing images are useful for a wide variety of planet monitoring applications, from tracking deforestation to tackling illegal fishing. The Earth is extremely diverse -- the amount of potential tasks in remote sensing images is…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Favyen Bastani , Piper Wolters , Ritwik Gupta , Joe Ferdinando , Aniruddha Kembhavi

This article illustrates how to measure the heterogeneity of spatial data presenting a finite number of categories via computation of spatial entropy. The R package SpatEntropy contains functions for the computation of entropy and spatial…

统计计算 · 统计学 2018-04-17 Linda Altieri , Daniela Cocchi , Giulia Roli

We describe redMaPPer, a new red-sequence cluster finder specifically designed to make optimal use of ongoing and near-future large photometric surveys. The algorithm has multiple attractive features: (1) It can iteratively self-train the…

Hyperspectral pansharpening consists of fusing a high-resolution panchromatic band and a low-resolution hyperspectral image to obtain a new image with high resolution in both the spatial and spectral domains. These remote sensing products…

计算机视觉与模式识别 · 计算机科学 2024-12-30 Matteo Ciotola , Giuseppe Guarino , Gemine Vivone , Giovanni Poggi , Jocelyn Chanussot , Antonio Plaza , Giuseppe Scarpa

We apply a friends-of-friends algorithm to the HectoMAP redshift survey and cross-identify associated X-ray emission in the ROSAT All-Sky Survey data (RASS). The resulting flux limited catalog of X-ray cluster survey is complete to a…

宇宙学与河外天体物理 · 物理学 2018-03-28 Jubee Sohn , Gayoung Chon , Hans Böhringer , Margaret J. Geller , Antonaldo Diaferio , Ho Seong Hwang , Yousuke Utsumi , Kenneth J. Rines

We present a study of photometric redshift performance for galaxies and active galactic nuclei detected in deep radio continuum surveys. Using two multi-wavelength datasets, over the NOAO Deep Wide Field Survey Bo\"otes and COSMOS fields,…

We measure photometric redshifts and spectral types for galaxies in the COSMOS survey. We use template fitting technique combined with luminosity function priors and with the option to simultaneously estimate dust extinction (i.e. E(B-V))…

Remote photoplethysmography (rPPG) allows for the contactless estimation of physiological signals from facial videos by analyzing subtle skin color changes. However, rPPG signals are extremely susceptible to illumination changes, motion,…

图像与视频处理 · 电气工程与系统科学 2026-03-31 Arpan Bairagi , Rakesh Dey , Siladittya Manna , Umapada Pal

Remote sensing change detection (RSCD) aims to identify surface changes from co-registered bi-temporal images. However, many deep learning-based RSCD methods rely solely on change-map annotations and underuse the semantic information in…

计算机视觉与模式识别 · 计算机科学 2025-11-21 Ching-Heng Cheng , Chih-Chung Hsu

In a continued quest to monitor subsecond surface dynamics on the atomic scale and to improve imaging resolution, a FAST module to accelerate existing scanning probe microscopy setups was previously presented. Hereby, the speedup is enabled…

仪器与探测器 · 物理学 2023-01-30 K. Briegel , F. Riccius , J. Filser , A. Bourgund , R. Spitzenpfeil , M. Panighel , C. Dri , B. A. J. Lechner , F. Esch

Nonstationarity in spatial and spatio-temporal processes is ubiquitous in environmental datasets, but is not often addressed in practice, due to a scarcity of statistical software packages that implement nonstationary models. In this…

统计计算 · 统计学 2025-12-10 Quan Vu , Xuanjie Shao , Raphaël Huser , Andrew Zammit-Mangion

We present a new approach to obtaining photometric redshifts using a kernel learning technique called Support Vector Machines (SVMs). Unlike traditional spectral energy distribution fitting, this technique requires a large and…

天体物理学 · 物理学 2009-11-10 Yogesh Wadadekar

An important step of modeling spatially-referenced data is appropriately specifying the second order properties of the random field. A scientist developing a model for spatial data has a number of options regarding the nature of the…

统计计算 · 统计学 2015-11-17 Zachary D. Weller

We use the deepest and most complete redshift catalog currently available (the Hubble Deep Field (HDF) North supplemented by new HDF South redshift data) to minimize residuals between photometric and spectroscopic redshift estimates. The…

天体物理学 · 物理学 2016-08-30 M. Massarotti , A. Iovino , A. Buzzoni , D. Valls--Gabaud