Title :
Multiresolution Target Detection in Wavelet Domain for SAR Imagery
Author :
Yuan, Xiao-Hong ; Zhu, Zhao-Da ; Zhang, Gong
Author_Institution :
Coll. of Aerosp. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
Multiresolution CFAR detection algorithm in wavelet domain using db4 wavelet is investigated in this paper, which can be incorporated into SAR image compression system. It is derived on a multiscale model of SAR imagery. Thanks to the structure of this model and detection in wavelet domain, calculation is much simpler than that of two parameter CFAR detection algorithm in image domain. Tests on simulated and collected image show that the proposed algorithm performs best. The algorithm is more suitable for the application in ROI-based image compression than two parameter CFAR detection algorithm in image domain.
Keywords :
data compression; image coding; image resolution; radar imaging; radar target recognition; synthetic aperture radar; wavelet transforms; CFAR detection; SAR image compression; multiresolution target detection; synthetic aperture radar; wavelet domain; Algorithm design and analysis; Detection algorithms; Discrete wavelet transforms; Image analysis; Image coding; Image resolution; Object detection; Pixel; Wavelet coefficients; Wavelet domain; multiresolution; synthetic aperture radar; target detection; wavelet;
Conference_Titel :
Information Assurance and Security, 2009. IAS '09. Fifth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-0-7695-3744-3
DOI :
10.1109/IAS.2009.178
