109 citations · 226 across the 12 of their papers we have counts for
11 papers · 1 filter
On the Use of Lee's Protocol for Speckle-Reducing Techniques
Elsa E. Moschetti, M. Gabriela Palacio, Mery Picco +2
This paper presents two new MAP (Maximum a Posteriori) filters for speckle noise reduction and a Monte Carlo procedure for the assessment of their performance. In order to quantita…
Assessment of SAR Image Filtering using Adaptive Stack Filters
Maria E. Buemi, Marta Mejail, Julio Jacobo +2
Stack filters are a special case of non-linear filters. They have a good performance for filtering images with different types of noise while preserving edges and details. A stack…
Polarimetric SAR Image Segmentation with B-Splines and a New Statistical Model
Alejandro C. Frery, Julio Jacobo-Berlles, Juliana Gambini +1
We present an approach for polarimetric Synthetic Aperture Radar (SAR) image region boundary detection based on the use of B-Spline active contours and a new model for polarimetric…
Deconvolution of vibroacoustic images using a simulation model based on a three dimensional point spread function
Talita Perciano, Matthew Urban, Nelson D. A. Mascarenhas +3
Vibro-acoustography (VA) is a medical imaging method based on the difference-frequency generation produced by the mixture of two focused ultrasound beams. VA has been applied to di…
Stochastic particle packing with specified granulometry and porosity
A. C. Frery, L. Rivarola-Duarte, V. Carrilho Leão Ramos +2
This work presents a technique for particle size generation and placement in arbitrary closed domains. Its main application is the simulation of granular media described by disks.…
Hypothesis Testing in Speckled Data with Stochastic Distances
Abraão D. C. Nascimento, Renato J. Cintra, Alejandro C. Frery
Images obtained with coherent illumination, as is the case of sonar, ultrasound-B, laser and Synthetic Aperture Radar -- SAR, are affected by speckle noise which reduces the abilit…