Robust registration method of SAR and optical remote sensing Images based on cascade transforms

Because that there are obvious differences of radiometric and geometric in SAR and optical image registration, this article presents a method based on cascade transform (CT) to register SAR and optical images. To remove radiation differences, gray transformation was used to extract stable structure...

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Bibliographic Details
Published inHong wai yu hao mi bo xue bao Vol. 34; no. 4; pp. 486 - 492
Main Authors Wang, Feng, You, Hong-Jian
Format Journal Article
LanguageChinese
Published 01.08.2015
Subjects
Cascades
Image registration
Infrared
Mathematical models
Registers
Transformations
Transforms
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Summary:Because that there are obvious differences of radiometric and geometric in SAR and optical image registration, this article presents a method based on cascade transform (CT) to register SAR and optical images. To remove radiation differences, gray transformation was used to extract stable structure information for the SAR and optical images. Then, Weighted-Logarithmic-Polar transformation is proposed to obtain scale and rotation parameters between the images, solving the global geometric differences. Finally, local geometric transform is conducted to get accurate matches and the image was registered by TPS model. The registration experiments show that the proposed method is able to extract stable structures and robust to the differences of radiometric and geometric. The precision of the registration method is high.
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ISSN:1001-9014
DOI:10.11972/j.issn.1001-9014.2015.04.18