误差分散类彩色半调图的边缘检测算法  

Edge Detection Algorithm for Error-Diffused Color Halftones

作　　者：郑海红[1] 王义峰[1] 孔月萍[1] 曾平[1] 徐培培[1] 

机构地区：[1]西安电子科技大学计算机学院,西安710071

出　　处：《光子学报》2007年第5期941-944,共4页Acta Photonica Sinica

基　　金：国防科技预研基金(51416050301DZ0140);陕西省自然科学研究计划(2001x06);西安电子科技大学研究生创新基金(05008);陕西省自然科学基金(2004F32);陕西省教育厅专项(04JK244)资助

摘　　要：针对误差分散类彩色半调图提出一种边缘检测算法.首先应用K-L变换,将( R,G,B)空间转换为具有正交特性的彩色特征空间(I1,I2,I3),构造灰度图I使之包含所有单色图像的边缘信息,最后设计多尺度边缘检测模板以获取图像边缘.实验表明,算法较传统方法抗半调噪音的能力强,能快速、准确地提取彩色半调图像的边缘.An edge detection algorithm was presented for error-diffused color halftones.K-L transformation was first used to transform （R,G,B） color space into another orthogonal color Space （I1,I2,I3）.Then the grayscale image of I was constructed,which comprised all edges in three monochromatic images. Finally multiscale edge detector mask was designed to obtain the edges in I.Experiments show that it has a better halftone noise robustness than traditional edge detection methods,and it can find edges of color halftones quickly and accurately.

关 键 词：彩色半调 误差分散 边缘检测 K-L变换 

分 类 号：TN911.73[电子电信—通信与信息系统]