摘要
分析了Hermite型插值样条的基本特性,同时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,给出了一类新的基于Hermite型插值样条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。
The basic characteristics of a class of Hermite-type interpolation spline are investigated. Mean- while, a new adaptive algorithm via Hermite-type interpolation spline for image interpolation is proposed by analyzing the reason of blurring or zigzag on edges of image and considering the demand for the real- time image transfer in multimedia communication. The proposed 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 the new algorithm. Illustrations show the validities of the proposed method by comparing with the normal polynomial methods.
出处
《量子电子学报》
CAS
CSCD
北大核心
2010年第5期528-534,共7页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金(60773128)
安徽省自然科学研究项目(KJ2009A123)
关键词
图像处理
自适应插值
Hermite型样条
分段插值
弹性边界
image processing
adaptive interpolation
Hermite-type spline
piecewise interpolation
flexible border
