Chinese Academy of Sciences

Changmiao Hu

Zheng Zhang

Hongyi Li

Ping Tang

Xiaojun Shan

Ke Zheng

Lianzhi Huo

A remote sensing image geometric normalization method and apparatus. The method comprises: constructing a pyramid tile structure for a reference image, and releasing reference tile data; calculating the level of a tile to be downloaded and the name of the tile to be downloaded, and downloading corresponding data from the reference tile data to obtain a standard tile set; performing first geometric correction on the image to be subjected to geometric normalization and tiles in the standard tile set to obtain a first image processing result; matching the first image processing result with the tiles in the standard tile set to obtain a plurality of control points, and calculating a result evaluation precision; and determining whether to perform second geometric correction on the first image processing result.

Remote sensing image geometric normalization method and apparatus

A method and apparatus for patching a cloud area of a satellite image sequence. The method includes: identifying and expanding a cloud area and a cloud shadow area from each of a plurality of multispectral images of a target area and generating a plurality of single-band images; calculating at least one reference image required for patching the multispectral image and a patching sequence of reference images; determining a patching area of the multispectral image according to a cloud mask image; replacing pixel values of the patching area with pixel values of non-cloud areas of the reference images according to the patching sequence, to obtain a replacement patching image; recording serial number values of the reference images in the patching area to obtain a replacement reference mask image; and performing cloud patching on each replacement patching image and each replacement mask image in the target area through Poisson fusion.

Method and apparatus for patching cloud area of satellite image sequencing

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Changmiao Hu