Title :
Design and optimization of remote sensing image fusion parallel algorithms based on CPU-GPU heterogeneous platforms
Author :
Zhao, Jin ; Zhou, Haifang
Author_Institution :
Sch. of Comput., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
Remote sensing image fusion emerges as an im- portant approach to improve the utilization of information from multi-source remote sensing image. As the resolution of time, space and spectrum continuously increases, the remote sensing image data becomes extremely large. In this paper, we propose a novel parallel processing model to exploit its data parallelism on the heterogeneous CPU-GPU platform. While taking advantage of NVIDIA´s CUDA (Compute Unified Device Architecture) programming technology, we apply this model to the YIQ transform fusion algorithm and IHS transform with wavelet enhancement fusion algorithm. We have optimized and implemented these parallel algorithms on NVIDIA GTX460 GPU. Experimental results show that the proposed parallel model has an outstanding performance and scalability. The maximum speedup is up to 114X compared with the serial CPU program. This study shows that GPU general computing technology has broad application prospects in the field of remote sensing image fusion.
Keywords :
graphics processing units; image enhancement; image fusion; optimisation; parallel algorithms; parallel architectures; remote sensing; wavelet transforms; CPU program; IHS transform; NVIDIA CUDA programming technology; NVIDIA GTX460 GPU general computing technology; YIQ transform fusion algorithm; compute unified device architecture; data parallelism; heterogeneous CPU-GPU heterogeneous platform; multisource remote sensing image data; parallel processing model; remote sensing image fusion parallel algorithm; wavelet enhancement fusion algorithm; Acceleration; Graphics processing unit; Image fusion; Instruction sets; Remote sensing; Wavelet transforms; CUDA; GPU; acceleration; fusion; image; model; optimization;
Conference_Titel :
Image and Signal Processing (CISP), 2011 4th International Congress on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-9304-3
DOI :
10.1109/CISP.2011.6100484