Orthogonal U Transform and Its Application in Image Compression

摘要：

In this paper, a new unitary transform called U transform, is constructed in recursion way. The U transform matrix contains piecewise constant basis vectors, piecewise linear basis vectors and piecewise second order polynomial basis vectors, and therefore U transform is a generalization of Walsh transform and Slant transform. A fast computational algorithm has been found for the transformation. The U transform is applied to digital image compression with quantizafion table based on Human Visual System (HVS). The experimental results indicate that U transform outperforms Slant transform in image compression.

关键词： orthogonai transform fast algorithm image compression

作者: GUO Fenhong XIONG Changzhen

作者单位: School of Information Science and Technology Sun Yat-sen University Guangzhou, China Automation Department North China University of Technology BeiJing, China

会议类型: 国际会议

会议名称: 2010 IEEE International Conference on Intelligent Computing and Intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

会议地点: 厦门

会议语种:英文

页码: 497-501

在线出版日期: 2010-10-29（万方平台首次上网日期，不代表论文的发表时间）