Results 71 to 80 of about 66,156 (175)

Detection of Coastal Erosion and Progradation in the Colombian ‘Atrato River’ Delta by Using Sentinel-1 Synthetic Aperture Radar Data

Remote Sensing
This paper presents a methodology to detect the coastal erosion and progradation effects in the ‘Atrato River’ delta, located in the Gulf of Urabá in Colombia, using SAR (Synthetic Aperture Radar) images.
Rubén Darío Vásquez-Salazar, Ahmed Alejandro Cardona-Mesa, Juan Valdés-Quintero, César Olmos-Severiche, Luis Gómez, Carlos M. Travieso-González, Jean Pierre Díaz-Paz, Jorge Ernesto Espinosa-Ovideo, Lorena Diez-Rendón, Andrés F. Garavito-González, Esteban Vásquez-Cano   +10 more
doaj   +1 more source

Spectroscopic binaries as a source for astrometric and speckle interferometric studies. [PDF]

, 1976
H. A. McAlister
openalex   +1 more source

A Speckle Pattern Velocimeter Using a Periodical Differential Detector [PDF]

, 1975
Haruo Ogiwara, Hiroo Ukita
openalex   +1 more source

Machine learning classification based on k-Nearest Neighbors for PolSAR data

Anais da Academia Brasileira de Ciências
In this work, we focus on obtaining insights of the performances of some well-known machine learning image classification techniques (k-NN, Support Vector Machine, randomized decision tree and one based on stochastic distances) for PolSAR (Polarimetric ...
JODAVID A. FERREIRA, ANNY K.G. RODRIGUES, RAYDONAL OSPINA, LUIS GOMEZ   +3 more
doaj   +1 more source

Dynamics of Speckles Produced by a Moving Object and Its Applications [PDF]

, 1975
Ichirou Yamaguchi, Shinichi Komatsu, Hiroyoshi Saito   +2 more
openalex   +1 more source

Speckle interferometry in the near-infrared [PDF]

, 1979
M. J. Selby, R. A. Wade, C. Sánchez Magro   +2 more
openalex   +1 more source

Analysis of Despeckling Filters Using Ratio Images and Divergence Measurement

Remote Sensing
This paper presents an analysis of different despeckling filters applied on both synthetically corrupted optical images and actual Synthetic Aperture Radar (SAR) images. Several authors use optical images as ground truth and then the images are corrupted
Luis Gómez, Ahmed Alejandro Cardona-Mesa, Rubén Darío Vásquez-Salazar, Carlos M. Travieso-González   +3 more
doaj   +1 more source

Computer simulations of speckle interferometry of binary stars in the photon-counting mode [PDF]

, 1978
J. C. Dainty
openalex   +1 more source

Nanometric displacements measurement in piezoelectric polymers using bivariate empirical mode decomposition method in speckle patterns

Revista Elektrón, 2019
In this work we present an optical method for the direct determination of the piezoelectric coefficient of polymeric thin films. This is achieved through the measurement of nanometric mechanical displacements generated in the film when it is excited by ...
Pablo Etchepareborda, Francisco Veiras, Arturo Bianchetti, Alejandro Federico, Martin German Gonzalez   +4 more
doaj  

Fully Polarimetric SAR Image Filtering by Combining Block Matching and Lee Filter

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Speckle filtering is a key preprocessing approach for the applications of polarimetric synthetic aperture radar (PolSAR) data. Most current PolSAR filtering algorithms can hardly get good balance in suppressing speckle and retaining image details.
Guisheng Zhao, Shengyuan Zhu, Yinglei Wu
doaj   +1 more source