Thin cloud removal of ZY-3 image based on improved homomorphism filtering method

Author

Xiaoping Wu ; Wunian Yang ; Guoming Li

Author_Institution

Key Lab. of Geosci. Spatial Inf. Technol., GIS Chengdu Univ. of Technol., Chengdu, China

fYear

2013

fDate

20-22 June 2013

Firstpage

1

Lastpage

4

Abstract

The ZY-3 satellite is the first civilian optical transmission and three-dimensional mapping satellite with highresolution in China. However, the cloud cover is still one of its main noises. This paper selects homomorphism filtering and improved homomorphism filtering algorithms to remove thin cloud after analyzing a variety of method characteristics of removing the cloud, and compares the two methods from by both qualitative analysis and quantitative evaluation. The result shows that the removal of thin clouds of ZY-3 image based on improved homomorphism filtering method has smaller image distortion, and at the same time, keeps the spatial texture detail, which is more suitable for ZY-3 to remove cloud.

Keywords

artificial satellites; clouds; filtering theory; geophysical image processing; image enhancement; image restoration; image texture; China; ZY-3 image thin cloud removal; ZY-3 satellite; cloud cover; high-resolution civilian optical transmission satellite; high-resolution three-dimensional mapping satellite; image distortion; improved homomorphism filtering method; qualitative analysis; quantitative evaluation; spatial texture detail; Clouds; Filtering; Frequency-domain analysis; Remote sensing; Satellites; Standards; Transforms; ZY-3 satellite; improved homomorphism filtering; qualitative evaluation; remove cloud processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoinformatics (GEOINFORMATICS), 2013 21st International Conference on

Conference_Location

Kaifeng

ISSN

2161-024X

Type

conf

DOI

10.1109/Geoinformatics.2013.6626097

Filename

6626097