Results 321 to 330 of about 61,185 (361)

Quality measures for SAR images

ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, 2003
Synthetic aperture radar (SAR) contains information features different from those of infrared images and conventional photography. Image quality measures specifically created for SAR are necessary to measure SAR processor performance especially in the context of lossy image data compression.
James E. Harris, Randall S. Ostler, Douglas M. Chabries, Richard W. Christiansen   +3 more
openaire   +1 more source

Analysis of the Multispectral and SAR Image

2021 IEEE 6th International Conference on Computer and Communication Systems (ICCCS), 2021
The SAR image and the multispectral image are both used for dynamic monitoring, mineral resources investigation, urban and rural monitoring and evaluation, traffic network exploration, forest resources investigation, desertification monitoring, and so on. The multi-spectral and SAR image fusion to improve the classify quality is discussed in this paper,
Shuchun Zhang, Yun Zhang 0023, Yongbin Chou, Ziheng Wang 0005, Yifu Shi, Zhenyu Sun 0004   +5 more
openaire   +1 more source

Image Decomposition Application to SAR Images

2003
We construct an algorithm to split an image into a sum u + v of a bounded variation component and a component containing the textures and the noise. This decomposition is inspired from arecent work of Y. Meyer. We find this decomposition by minimizing a convex functional which depends on the two variables u and v, alternatively in each variable.
Aujol, Jean-François, Aubert, Gilles, Blanc-Féraud, Laure, Chambolle, Antonin   +3 more
openaire   +2 more sources

Geometrical SAR image registration

IEEE Transactions on Geoscience and Remote Sensing, 2006
Accurate subpixel registration of synthetic aperture radar (SAR) images is an issue that is again growing interest since its initial developments related to two-pass interferometry. Recent progress in coherent (multichannel) SAR processing raises the need for accurate registration of data takes acquired with large baseline spans, high temporal coverage,
Sansosti E, Berardino P, Manunta M, Serafino F, Fornaro G   +4 more
openaire   +2 more sources

A visualization method for SAR images

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
Visual interpretation of SAR images plays a critical role in remote sensing applications. For rapidly obtaining the image suitable for human observation, a new method of visualization for SAR images is proposed in this paper. The statistics of the SAR data, including the single channel data intensity and the span of the Pol-SAR data, are derived.
Guangyi Zhou, Wentao An, Jian Yang 0011, Hua Zhong   +3 more
openaire   +1 more source

Polarimetric SAR Image Factorization

IEEE Transactions on Geoscience and Remote Sensing, 2017
This paper reformulates the problem of polarimetric incoherent target decomposition as a general image factorization which aims to simultaneously estimate a dictionary of meaningful atom scatterers and their corresponding spatial distribution maps.
Feng Xu 0001, Qian Song, Ya-Qiu Jin
openaire   +1 more source

Polarimetric discriminators for SAR images

IEEE Transactions on Geoscience and Remote Sensing, 1992
A method is developed for optimizing the degree of polarization of a partially polarized wave reflected by a nonstationary scattering object. The method permits, for a scattered wave and a given target characterized by its Mueller matrix, analytic computation of the maximum and minimum values of the degree of polarization, and the corresponding ...
Ridha Touzi, Stéphane Goze, Thuy Le Toan, Armand Lopès, Eric Mougin   +4 more
openaire   +1 more source

Filtering of multichannel SAR images

IEEE Transactions on Geoscience and Remote Sensing, 2001
An explicit form of the linear multichannel synthetic aperture radar (SAR) intensity filter, which preserves radiometry while optimally reducing speckle is derived, together with a compact expression for the theoretical gain in equivalent numbers of looks (ENLs).
Shaun Quegan, Jiong Jiong Yu
openaire   +1 more source

Research on Bistatic SAR Imaging

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
For reasons of stealth and other operational advantages, more attention has recently been focused on bistatic SAR Bistatic SAR uses separated transmitter and receiver flying on different platforms, and has the ability of the exploitation of additional information contained in the bistatic reflectivity of targets.
Zhenbo Zhu, Ziyue Tang, Xingzhou Jiang
openaire   +1 more source

Parallel Sar Image Enhancement

The International Journal of Supercomputer Applications and High Performance Computing, 1997
Synthetic aperture radar (SAR) offers the possibility of imaging the earth's surface independent of time of day or weather conditions. SAR images differ from optical images in that they contain speckle, multiplicative noise with a poor signal-to-noise ratio of about 1 to 1.
Cliff A. Addison, Enrico Appiani, R. Cook, Marco Corvi, G. Howard, B. Stephens   +5 more
openaire   +1 more source