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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
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长春光学精密机械与物... [1]
新疆天文台 [1]
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OAI收割 [2]
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会议论文 [1]
期刊论文 [1]
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2011 [1]
2010 [1]
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A hybrid median filter for enhancing dim small point targets and its fast implementation (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Multimedia and Signal Processing, CMSP 2011, May 14, 2011 - May 15, 2011, Guilin, Guangxi, China
Yang Q.
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浏览/下载:22/0
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提交时间:2013/03/25
Weak stars and middle altitude orbit satellites or high altitude orbit satellites are presented as dim point targets in images of astronomical observation. They have low intensity and occupy few pixels in image. In most situations
the background of sky is always ununiform and there exists pulse noises. Thus results in targets submerging in background noises and low signal noise ratio (SNR). Median filter is an effective method for removing pulse noise. But it can blur image after modifying gray of non-noise pixels when image has low SNR. A hybrid median filter algorithm is proposed to process low SNR dim point targets image. The newly proposed method can suppress the pulse noises
also can increase target $SNR$ and does not add extra fake targets. The time complexity of median filter is O(N2)(N is the widow size) and is difficult to implement in hardware. For quasi real time application
a fast implementation of our hybrid median filter is proposed to reduce the time complexity to O(N). Experimental results show that the newly proposed algorithm is superior to ordinary median filter and fast median filter by comparing visual effect and performance. 2011 IEEE.
Influence of medium effects on the rotating hybrid stars
期刊论文
OAI收割
CHINESE PHYSICS C, 2010, 卷号: 34, 期号: 11, 页码: 1696-1699
作者:
Kang Miao
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浏览/下载:15/0
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提交时间:2015/08/25
hybrid stars
rotation
medium effects