J4 ›› 2010, Vol. 27 ›› Issue (5): 528-534.

• 图像与信息处理 • 上一篇    下一篇

自适应图像插值的Hermite型混合样条方法

盛敏1,苏本跃2   

  1. 1 安庆师范学院数学与计算科学学院, 安庆 246011; 
    2 安庆师范学院计算机与信息学院, 安庆 246011
  • 收稿日期:2009-11-24 修回日期:2010-01-10 出版日期:2010-09-28 发布日期:2010-08-31
  • 通讯作者: 苏本跃, 男, 1971年生, 安徽芜湖人, 博士, 副教授, 硕士生导师, 中国计算机学会高级会员,研究方向为计算机图形学, 数字图像处理, 科学与工程计算.
  • 作者简介:盛敏, 女, 1975年生, 安徽安庆人, 博士, 研究方向为图像与视频处理、视觉计算.
  • 基金资助:

    国家自然科学基金(60773128),安徽省自然科学研究项目(KJ2009A123)

An adaptive algorithm for image interpolation based on Hermite-type blended spline

SHENG Min1, SU Benyue2   

  1. 1 School of Mathematics and Computational Science, Anqing Teachers College, Anqing 246011, China; 
    2 School of Computer & Information, Anqing Teachers College, Anqing 246011, China
  • Received:2009-11-24 Revised:2010-01-10 Published:2010-09-28 Online:2010-08-31

摘要:

分析了Hermite型插值样条的基本特性,研究了图像放大时边缘区域产生模糊的原因,并考虑到数字图像实时传输的要求,给出了一类新的自适应图像插值算法. 由于采用单核插值以及弹性边界的处理方法,提出的算法计算复杂性较小,且尽可能保持了边缘像素原有特征. 数值模拟与仿真显示该方法比传统方法有更清晰的边界.

关键词: 图像处理, 自适应插值, Hermite型样条, 分段插值, 弹性边界

Abstract:

The basic characteristics of a class of Hermite interpolation spline are researched and a new adaptive algorithm for image interpolation is proposed by analyzing the reason like blurring or zigzag on edges of image and considering the demand for the real-time image transfer in multimedia communication. Our method provides the less computational complexity for a single kernel function, and the edge-preserving characters can be preserved by using the flexible border in our new algorithm. Illustrations show the validities of proposed method by comparing with the normal polynomial methods.

Key words: image processing, adaptive interpolation, Hermite-type spline, Piecewise interpolation, flexible border