Title :
GPu-based framework for interactive visualization of SAR data
Author :
Lambers, Martin ; Kolb, Andreas ; Nies, Holger ; Kalkuhl, Marc
Author_Institution :
Univ. of Siegen, Siegen
Abstract :
Synthetic aperture radar data presents specific problems for interactive visualization. The high amount of multiplicative speckle noise has to be reduced. The high dynamic range of the amplitude data must be mapped to the lower dynamic range of display devices in a way that makes image features appropriately visible. In addition to interactive navigation in the data, it is desirable to allow interactive selection of despeckling and dynamic range reduction methods and adjustment of their parameters. Graphics processing units (GPUs) can be seen as ubiquitous parallel coprocessors with extreme computational power. In this paper, we propose a GPU-based framework for interactive visualization of SAR data. Data management techniques are used to make full use of the GPU. We reworked well-known despeckling and dynamic range reduction techniques for the GPU programming model and implemented them in our framework. Both navigation in large data sets and adjustment of processing parameters are fully interactive.
Keywords :
coprocessors; data visualisation; geophysical signal processing; image denoising; interactive systems; radar signal processing; speckle; synthetic aperture radar; GPU based framework; GPU programming model; data management techniques; dynamic range reduction; graphics processing unit; interactive SAR data visualization; interactive despeckling selection; large dataset navigation; multiplicative speckle noise reduction; parallel coprocessors; processing parameter adjustment; synthetic aperture radar; Concurrent computing; Coprocessors; Data visualization; Displays; Dynamic range; Graphics; Navigation; Noise reduction; Pervasive computing; Speckle;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4423745