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长春光学精密机械与物... [1]
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中国科学院大学 [1]
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期刊论文 [2]
会议论文 [1]
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Multi-focus image fusion algorithm based on adaptive PCNN and wavelet transform (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wu Z.-G.
;
Wang M.-J.
;
Han G.-L.
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浏览/下载:73/0
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提交时间:2013/03/25
Being an efficient method of information fusion
image fusion has been used in many fields such as machine vision
medical diagnosis
military applications and remote sensing.In this paper
Pulse Coupled Neural Network (PCNN) is introduced in this research field for its interesting properties in image processing
including segmentation
target recognition et al.
and a novel algorithm based on PCNN and Wavelet Transform for Multi-focus image fusion is proposed. First
the two original images are decomposed by wavelet transform. Then
based on the PCNN
a fusion rule in the Wavelet domain is given. This algorithm uses the wavelet coefficient in each frequency domain as the linking strength
so that its value can be chosen adaptively. Wavelet coefficients map to the range of image gray-scale. The output threshold function attenuates to minimum gray over time. Then all pixels of image get the ignition. So
the output of PCNN in each iteration time is ignition wavelet coefficients of threshold strength in different time. At this moment
the sequences of ignition of wavelet coefficients represent ignition timing of each neuron. The ignition timing of PCNN in each neuron is mapped to corresponding image gray-scale range
which is a picture of ignition timing mapping. Then it can judge the targets in the neuron are obvious features or not obvious. The fusion coefficients are decided by the compare-selection operator with the firing time gradient maps and the fusion image is reconstructed by wavelet inverse transform. Furthermore
by this algorithm
the threshold adjusting constant is estimated by appointed iteration number. Furthermore
In order to sufficient reflect order of the firing time
the threshold adjusting constant is estimated by appointed iteration number. So after the iteration achieved
each of the wavelet coefficient is activated. In order to verify the effectiveness of proposed rules
the experiments upon Multi-focus image are done. Moreover
comparative results of evaluating fusion quality are listed. The experimental results show that the method can effectively enhance the edge details and improve the spatial resolution of the image. 2011 SPIE.
Compensating time delays with neural predictions: are predictions sensory or motor?
期刊论文
OAI收割
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2009, 卷号: 367, 期号: 1891, 页码: 1063-1078
Nijhawan, Romi
;
Wu, Si
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浏览/下载:20/0
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提交时间:2012/07/13
neural processing
brain dynamics
motion extrapolation
flash-lag effect
diagonal neural pathway
HEAD-DIRECTION CELLS
FREELY MOVING RATS
FLASH-LAG
MOTION EXTRAPOLATION
ANTERIOR THALAMUS
FIRING PROPERTIES
PARIETAL CORTEX
GANGLION-CELL
EYE-MOVEMENTS
REPRESENTATION
Low-firing and microwave dielectric properties of ba2ti9o20 with bao-b2o3-zno glass addition
期刊论文
iSwitch采集
Japanese journal of applied physics, 2008, 卷号: 47, 期号: 9, 页码: 7246-7249
作者:
Zhou, Longfei
;
Lin, Huixing
;
Chen, Wei
;
Luo, Lan
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浏览/下载:63/0
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提交时间:2019/05/10
Dielectric properties
Low-firing
Ba2ti9o20 ceramics