A data-distributed parallel algorithm for wavelet-based fusion of remote sensing images

With the increasing importance of multiplatform remote sensing missions, the fast integration or fusion of digital images from disparate sources has become critical to the success of these endeavors. In this paper, to speed up the fusion process, a Data-distributed Parallel Algorithm for wavelet-bas...

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Bibliographic Details
Published in:Frontiers of Computer Science Vol. 1; no. 2; pp. 231 - 240
Main Authors: Yang, Xuejun, Wang, Panfeng, Du, Yunfei, Zhou, Haifang
Format: Journal Article
Language:English
Published: Heidelberg Springer Nature B.V 01.05.2007
Subjects:
Algorithms
Digital imaging
Microprocessors
Parallel processing
Remote sensing
Wavelet transforms
Workstations
ISSN:1673-7350, 2095-2228, 1673-7466, 2095-2236
Online Access:Get full text
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Summary:With the increasing importance of multiplatform remote sensing missions, the fast integration or fusion of digital images from disparate sources has become critical to the success of these endeavors. In this paper, to speed up the fusion process, a Data-distributed Parallel Algorithm for wavelet-based Fusion (DPAF for short) of remote sensing images which are not geo-registered remote sensing images is presented for the first time. To overcome the limitations on memory space as well as the computing capability of a single processor, data distribution, data-parallel processing and load balancing techniques are integrated into DPAF. To avoid the inherent communication overhead of a wavelet-based fusion method, a special design called redundant partitioning is used, which is inspired by the characteristics of wavelet transform. Finally, DPAF is evaluated in theory and tested on a 32-CPU cluster of workstations. The experimental results show that our algorithm has good parallel performance and scalability.
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ISSN:1673-7350
2095-2228
1673-7466
2095-2236
DOI:10.1007/s11704-007-0024-1