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�������պ����ѧѧ�� 2009, Vol. 35 Issue (1) :108-112    DOI:
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��Զ��, ������*
�������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100191
Novel adaptive denoising method for extreme noise based on PCNN
Liu Yuanmin, Qin Shiyin,*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ Ϊ��ʵ�ֽ�����������Чȥ����ͼ��ϸ�ڼ��������Ч����,�����һ���µĻ���PCNN(Pulse Coupled Neural Network)������Ӧ�˲�����ADEN(Adapative Denosing method for Extreme Noise)-PCNN.�÷�����������������Ⱦ״̬��������,ֻ�Ա���Ⱦ�����ؽ��н��봦��,��֤��ȥ���ͬʱ����ͼ����Ϣ,ʵ����ͼ���ϸ�ں��������Ч����;Ϊ��ȷ��ͼ������,������ͼ�����PCNN���������нṹ������������֯����,�����Զ��ع���������ǿ����Ϣ������PCNN��������Ԫ���ӷ�ʽ������֯ת��,��������������Ӧ����,��������ǿ�ȵĹ�����Ϣ,�Զ������˲���������ѡ,��ǿ����Ӧ����.ʵ�����������᷽���ϳ��淽��������ͬ�෽����ȥ��Ч��������ͼ��ϸ�ڷ���չ�ֳ����Ե�����.
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Abstract�� To implement the removal of salt and pepper noise effectively and the conservation of image details and textures, a novel adaptive denoising method for extreme noise based-on pulse coupled neural network(ADEN-PCNN)was proposed. A kind of detection mechanism was applied to discriminate whether a given pixel was corrupted or not, and only the corrupted pixels must be denoised so that the original image information could not be damaged and the details as well as the textures of the images clould be conserved effectively. To improve the image quality, the self-organization mechanism was introduced into PCNN array framework, thus the neighboring connection modes of neurons in the PCNN could switch automatically. Furthermore, an adaptive mechanism was used to automatically select the optimal filtering times based on the estimated noise intensity to enhance adaptability of algortihm. Experiment results indicate that this method presented is more preponderant than the conventional methods and other congeneric methods in removing noise and conserving image details.
Keywords�� image denoising   noise detection   pulse coupled neural network(PCNN)   adaptive filtering     
Received 2008-02-29;
About author: ��Զ��(1972-),��,�����»���,��ʿ��,liu_yuan_min@163.com.
��Զ��, ������.һ���µĻ���PCNN������Ӧǿȥ�뷽��[J]  �������պ����ѧѧ��, 2009,V35(1): 108-112
Liu Yuanmin, Qin Shiyin, .Novel adaptive denoising method for extreme noise based on PCNN[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(1): 108-112
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2009/V35/I1/108
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