Paper Title:
MTF Compensation Combining Reciprocal Cell with Shift Invariance Wavelet
  Abstract

On remote sensing imaging platform, quality of image is normally degraded by aliasing. The low-pass filter is commonly used to dealiasing. However low-pass filter introduces error for frequencies above its cutoff frequency. And the removed aliasing is also valuable information. To retain the valuable information, we propose a restoration based on band-pass filter. Firstly, the image is transformed into frequency domain. A restoration of reciprocal cell is adopted. It is based on geometrical characteristics of sensors. As a result, the superposition parts are separated from spectrum inside the bandwidth. Then aliasing spectrum is put into right position. Inverse filter is used to deblurring and remove the color noise. Finally, the shift invariance wavelet is combined to reduce the white noise. The test results indicate that the proposed restoration is better than conventional restorations. Valuable information of the restored spectrum is more than degraded spectrum. So this proposed method will be beneficial in the field of practical projects.

  Info
Periodical
Edited by
Zhixiang Hou
Pages
719-723
DOI
10.4028/www.scientific.net/AMM.48-49.719
Citation
Z. J. Liu, Z. Zhang, D. S. Xia, "MTF Compensation Combining Reciprocal Cell with Shift Invariance Wavelet", Applied Mechanics and Materials, Vols. 48-49, pp. 719-723, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ning Li, Rui Zhou
Abstract:Wavelet transform has been widely used for the vibration signal based rolling element bearing fault detection. However, the problem of...
931
Authors: He Yan, Ying Jun Pan
Abstract:The factors of aliasing in the nonsubsampled Contourlet transform(NSCT) has been analyzed.The primary reason has been pointed that the à...
893
Authors: Ya Mei Liu, Hong Geng Yang, Lan Fang Li
Chapter 6: Power System and Automation
Abstract:Interharmoics are the signals whose frequencies are between two harmonics. Besides the usual characterics of the harmonics, interharmonics...
1012
Authors: Xin Tao Jiao
Chapter 3: Design Science, Dynamics Systems and Applied Mechanics Applications
Abstract:Shortcomings inhered in the canonical wavelet packet algorithm are explained in detail. An anti-aliasing wavelet packet algorithm is...
233