%0 Journal Article
%T Research of point-symmetric boundary extension in wavelet transform<br>小波变换点对称边界延拓问题研究
%A SUN Lei
%A LUO Jian-shu
%A <br>孙蕾
%A 罗建书
%J 计算机应用
%D 2008
%I 
%X This paper compared several boundary extensions based on wavelet transform.In particular,we analyzed the smoothness on boundary after point-symmetric extension,proposed a point-symmetric extension based on odd-length symmetric filter and proved that it preserved the perfect reconstruction while keeping the signal length unchanged.We used both symmetric extension and point-symmetric extension to analyze and reconstruct finite signals.The result shows that the point-symmetric extension's reconstruction precis...
%K wavelet transform
%K point-symmetric extension
%K symmetric extension<br>小波变换
%K 点对称延拓
%K 对称延拓
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=253A3C6B0D0F0FDF8D55A3B64FF3801E&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=5824536C90612D67&eid=818348DEDD71CAD3&journal_id=1001-9081&journal_name=计算机应用&referenced_num=1&reference_num=9