System Development & Application
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App. Res. of Comp. Printed Article
Vol. 38, 2021 No. 6
1794-1799

Efficient implementation method of real-time cloud detection in remote sensing video based on FPGA

Yan Xiaopan1
Xia Yuli1
Zhao Junsuo1,2
Zhang Yufeng1
Qiao Peng1
1. Institute of Software Chinese Academy of Sciences, Beijing 100190, China
2. University of the Chinese Academy of Sciences, Beijing 100049, China
DOI: 10.19734/j.issn.1001-3695.2020.08.0253

Abstract

At present, cloud detection algorithms for remote sensing image and hardware platform required by the algorithms are very complicated. In order to solve the real-time problem of cloud detection on orbit, this paper proposed a remote sensing video cloud detection method based on FPGA for satellite. Firstly, it down-sampled the remote sensing video adaptively according to the different input formats. Secondly, it segmented the image by the adaptive threshold. Then, it clustered the segmented image to obtain the cloud regions, and extracted the characteristic of each cloud region. Finally, it calculated the cloud coverage ratio and image availability of the image to determine whether the image was downloaded or not. Experimental results show that, at 60 MHz clock, the speed of cloud detection for image of 822×1096 can reach 132 fps when the Camera Link interface inputs two pixels in each clock cycle, which is 6~7 times faster than the traditional embedded dual core CPU. This method can realize real-time cloud detection on satellite, greatly alleviate the contradiction between data transmission bandwidth and the volume of remote sensing data, and greatly improve the application efficiency of remote sensing satellite system, which has strong practical value.

Publish Information

DOI: 10.19734/j.issn.1001-3695.2020.08.0253
Publish at: Application Research of Computers Printed Article, Vol. 38, 2021 No. 6
Section: System Development & Application
Pages: 1794-1799
Serial Number: 1001-3695(2021)06-036-1794-06

Publish History

[2021-06-05] Printed Article

Cite This Article

闫小盼, 夏玉立, 赵军锁, 等. 遥感视频实时云检测的FPGA高效实现方法 [J]. 计算机应用研究, 2021, 38 (6): 1794-1799. (Yan Xiaopan, Xia Yuli, Zhao Junsuo, et al. Efficient implementation method of real-time cloud detection in remote sensing video based on FPGA [J]. Application Research of Computers, 2021, 38 (6): 1794-1799. )

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  • Application Research of Computers Monthly Journal
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Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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