Results 21 to 30 of about 21,471 (126)
Variance‐based shoreline extraction from nearshore video monitoring systems
Earth Surface Processes and Landforms, Volume 50, Issue 6, May 2025.This article presents an original, direct and robust method, based on variance images, for shoreline detection from nearshore video monitoring systems. Detecting these successive shorelines on the foreshore during a tidal cycle is a key step to capture short‐term morphological variations.
Marion Jaud +4 more
wiley +1 more source
The correlation of visibility noise and its impact on the radiometric resolution of an aperture synthesis radiometer [PDF]
, 2000 The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline redundance.
Bará Temes, Francisco Javier +3 more
core +1 more source
A Map of Potential Topographic Anomalies on Venus
Journal of Geophysical Research: Planets, Volume 130, Issue 5, May 2025.Abstract The most recent, highest‐resolution, global estimate of the topography of Venus is the Global Topographic Data Record (GTDR), a gridded representation of the altimetry data from the Magellan space mission. This product is impaired by an occasional pattern; a series of visually striking topographic “pits,” often referred to as spuriously low ...
Gerard Gallardo i Peres +2 more
wiley +1 more source
Solar cycle variation in solar irradiance
, 2014 The correlation between solar irradiance and the 11-year solar activity cycle is evident in the body of measurements made from space, which extend over the past four decades.
Krivova, N. A. +2 more
core +1 more source
The Use of Cryogenic HEMT Amplifiers in Wide Band Radiometers [PDF]
, 2000 Advances in device fabrication, modelling and design techniques have made wide band, low noise cryogenic amplifiers available at frequencies up to 106 GHz. Microwave radiometry applications as used in radio astronomy capitalize on the low noise and large
Jarosik, Norman
core +1 more source
The radiometry of multiple images [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2002 We introduce a methodology for radiometric reconstruction (i.e. the simultaneous recovery of multiple illuminants and surface albedoes from multiple views), assuming that the geometry of the scene and of the cameras is known. We formulate a linear theory of multiple illuminants and show its similarity to the theory of geometric recovery of multiple ...
Luong, Q. T., Fua, P., Leclerc, Y. G.
openaire +3 more sources
Ophthalmic and Physiological Optics, Volume 45, Issue 3, Page 820-833, May 2025.Abstract Purpose To report the repeatability and accuracy of viewing distance and ambient illumination measured with the Vivior and Clouclip wearable sensors in a controlled laboratory setting and while young adults performed different near visual tasks.
Samrat Sarkar +3 more
wiley +1 more source
An efficient methodology to simulate mixed spectral signatures of land covers through Field Radiometry data [PDF]
, 2009 An efficient methodology to simulate mixed spectral signatures of land covers, from endmember data, using linear statistical modelling based on the least squares estimation approach, is proposed.
Arquero Hidalgo, Águeda +2 more
core +1 more source
On the calibration of the relation between geometric albedo and polarimetric properties for the asteroids [PDF]
, 2015 We present a new extensive analysis of the old problem of finding a satisfactory calibration of the relation between the geometric albedo and some measurable polarization properties of the asteroids.
Bagnulo, S. +5 more
core +5 more sources
Ultraviolet radiation thin film dosimetry: A review of properties and applications
Photochemistry and Photobiology, Volume 101, Issue 3, Page 532-545, May/June 2025.Solar ultraviolet (UVR) exposure measurements at various body sites during daily activities, as well as on plants, animals, and any field sites of interest are essential for an understanding of the UVR environment. Thin film dosimetry provides a practical and versatile method for conducting these measurements.
Alfio V. Parisi +9 more
wiley +1 more source