Cloud detection on remote sensing imagery

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United States of America Patent

PATENT NO 9721181
SERIAL NO

14960921

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Abstract

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A system for detecting clouds and cloud shadows is described. In one approach, clouds and cloud shadows within a remote sensing image are detected through a three step process. In the first stage a high-precision low-recall classifier is used to identify cloud seed pixels within the image. In the second stage, a low-precision high-recall classifier is used to identify potential cloud pixels within the image. Additionally, in the second stage, the cloud seed pixels are grown into the potential cloud pixels to identify clusters of pixels which have a high likelihood of representing clouds. In the third stage, a geometric technique is used to determine pixels which likely represent shadows cast by the clouds identified in the second stage. The clouds identified in the second stage and the shadows identified in the third stage are then exported as a cloud mask and shadow mask of the remote sensing image.

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Patent Owner(s)

Patent OwnerAddress
THE CLIMATE CORPORATION201 THIRD STREET SUITE 1100 ATTN LEGAL SAN FRANCISCO CA 94103

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gerard, Jeffrey Seattle, US 6 9
Guan, Wei Fremont, US 43 407
Khadka, Pramithus Saint Louis, US 7 14

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