A Parallel Geometric Correction Algorithm Based on Dynamic Division-Point Computing

Ou Xinliang; Chen Songqiao; Chang Zhiming

Journal of Computer Research and Development > 2006 > 43(6): 1115-1121.

Ou Xinliang, Chen Songqiao, Chang Zhiming. A Parallel Geometric Correction Algorithm Based on Dynamic Division-Point Computing[J]. Journal of Computer Research and Development, 2006, 43(6): 1115-1121.

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A Parallel Geometric Correction Algorithm Based on Dynamic Division-Point Computing

1(College of Information Science & Engineering, Central South University, Changsha 410083) 2(School of Computer Science, National University of Defense Technology, Changsha 410073)

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Published Date: June 14, 2006

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Abstract

Abstract

Recently, parallelization of geometry correction on remote-sensing image has become an important research area. But there exist some problems in current parallel algorithms: They do not have the capability of load-balance, or the global computation is very large. What's more, local operation is time-consuming. Therefore, a parallel geometry correction algorithm based on dynamic division-point computing, called PIWA-DDC, is proposed. By means of the LogP model, it is deduced that PIWA-DDC has good scalability. The results from experiments on MPP show that this algorithm has good capability of load-balance and high efficiency of geometry aberration processing.
- PIWA-DDC,
- parallel,
- geometric correction,
- load-balance,
- remote-sensing image

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