Efficient implementation of curvelet transform using interpolation in subband domain

Xiao-xi Luo; Li-hong Ma; Yu Zhang

doi:10.1117/12.651835

2 December 2005 Efficient implementation of curvelet transform using interpolation in subband domain

Xiao-xi Luo, Li-hong Ma, Yu Zhang

Proceedings Volume 6045, MIPPR 2005: Geospatial Information, Data Mining, and Applications; 60452X (2005) https://doi.org/10.1117/12.651835
Event: MIPPR 2005 SAR and Multispectral Image Processing, 2005, Wuhan, China

Abstract

In this paper, a novel approach is developed for the purpose of rapid and fidelity Curvelet transform. It modifies the original algorithm in two aspects. Firstly, the numbers of projecting axes corresponding to subbands of finer scales are decreased, while at the same time axis numbers in coarser scales remain unchanged. Secondly, aiming to maintain signal resolution, interpolation and additive projection are introduced into smooth blocks and edge regions respectively. In addition, directional filter banks are employed to determine the dominant orientation in each edge region. Experimental results reveal that new method could increase PSNR around 0.4db, and saves averagely 49% of the executing time. Images processed by this new method obtain similar visual quality with coefficients less redundant. Furthermore, the modified algorithm conduces to noise removal as good as the original. It is verified as an efficient implementation of Curvelet transform.

Citation Download Citation

Xiao-xi Luo, Li-hong Ma, and Yu Zhang "Efficient implementation of curvelet transform using interpolation in subband domain", Proc. SPIE 6045, MIPPR 2005: Geospatial Information, Data Mining, and Applications, 60452X (2 December 2005); https://doi.org/10.1117/12.651835

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KEYWORDS

Visualization

Image processing

Cameras

Computed tomography

Reconstruction algorithms

Data conversion

Distortion

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