Title :
Striping Removal in Multi-beam Passive Millimeter Wave Image
Author :
Ye, Hongyi ; Li, Liangchao ; Yang, Jianyu
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The usage of multi-beam antenna in passive millimeter wave imaging system reduces the time of imaging, but this system structure leads to striping in the image acquired. By analyzing the characteristics of passive millimeter wave image and the spectrum distribution of striping noise, use a modified Butterworth low pass filter to remove striping in frequency domain. Confirm the cut-off frequency of the filter with the point spread function (PSF), which is estimated by using the antenna pattern data. The simulation shows that this method is effective in striping removal.
Keywords :
Butterworth filters; antenna radiation patterns; frequency-domain analysis; image denoising; low-pass filters; millimetre wave imaging; multibeam antennas; optical transfer function; Butterworth low pass filter; PSF; antenna pattern data; frequency domain analysis; multibeam antenna; multibeam passive millimeter wave imaging; point spread function; spectrum distribution; striping noise; striping removal; Antennas; Cutoff frequency; Discrete Fourier transforms; Frequency domain analysis; Imaging; Low pass filters; Noise; Butterworth filter; passive millimeter wave image; point spread function estimation; striping noise;
Conference_Titel :
Intelligence Information Processing and Trusted Computing (IPTC), 2010 International Symposium on
Conference_Location :
Huanggang
Print_ISBN :
978-1-4244-8148-4
Electronic_ISBN :
978-0-7695-4196-9
DOI :
10.1109/IPTC.2010.23
