%0 Journal Article
%T A Color Image Edge Detector Based on Quaternion Representation<br>基于四元数描述的彩色图象边缘检测器
%A LI Bao
%A qing
%A <br>李葆青
%J 中国图象图形学报
%D 2003
%I 
%X This paper proposes a new color image edge detection method, which utilizes quaternion based representation of color images and is based on a locally defined convolution filter that directly operates on the quaternion domain. The filter, which is a convolving kernel as a function of the pixel under consideration, is applied only to a pre defined neighborhood of the current pixel. Based on the properties of vector dot product and vector cross product between color pixels in quaternion domain, the convolution results are used to determine if the current pixel lies inside a locally homogenous region. A pixel that does not lie inside a locally homogenous region is classified as an edge pixel. Experiments with both synthetic and real color images are presented, along with comparisons with some other existing methods, illustrating the advantages of the proposed method.
%K Edge detection
%K Color image processing
%K Quaternion representation of images<br>计算机图象处理(520·6040)
%K 边缘检测
%K 彩色图象处理
%K 图象的四元数表示
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=727A7307601FDABD&yid=D43C4A19B2EE3C0A&vid=5D311CA918CA9A03&iid=DF92D298D3FF1E6E&sid=786A9BAE5CF9B9EE&eid=583C993D4E08F5CE&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=4&reference_num=9