SATELLITE IMAGE SEQUENCE CLOUD REGION REPAIRING METHOD AND APPARATUS

WIPO Patent Application WO/2021/046965

A1

A satellite image sequence cloud region repairing method and apparatus. The method comprises: respectively identifying and expanding a cloud region and a shadow region under the cloud from multiple multispectral images of a target region, and generating multiple single-band images (S11); according to the similarities between the single-band images, calculating a reference image and a repair sequence that are required to repair the multispectral images (S12); determining repair regions of the multispectral images according to cloud mask images corresponding to the single-band images (S13); according to the repair sequence, replacing the pixel values of the repair regions of the multispectral images with the pixel values of a non-cloud region of the reference image to obtain replacement repair images (S14); recording the number value of each reference image corresponding to each multispectral image in the repair regions to obtain replacement reference mask images (S15); and performing cloud repairing on each replacement repair image and each replacement reference mask image in the target region by means of Poisson fusion (S16). The method improves the efficiency and accuracy of satellite image sequence cloud region repairing.

HU CHANGMIAO (CN)
TANG PING (CN)
ZHANG ZHENG (CN)
HUO LIANZHI (CN)
LI HONGYI (CN)
SHAN XIAOJUN (CN)

PCT/CN2019/111581

March 18, 2021

October 17, 2019

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INST REMOTE SENSING & DIGITAL EARTH CAS (CN)

G06T5/00

CN108230376A	2018-06-29
CN107230195A	2017-10-03
CN108109126A	2018-06-01
CN105678777A	2016-06-15
US20070291170A1	2007-12-20

CHANG TSI & PARTNERS (CN)

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