摘要
图像放大是数字图像处理中常用的技术,图像放大首先对图像进行空间变换,其次对图像进行灰度插值.放大后的图像视觉效果如何在实际应用中显得尤为重要.因此图像放大问题的焦点是如何在图像放大过程中保持良好的视觉分辨率和清晰度.图像放大有许多算法,其关键在于对未知像素点使用何种插值方式.本文提出了一种比传统插值算法更好的算法即复合抛物样条插值,来实现图像的放大.实验结果表明,相对于传统的图像放大算法,本文的算法不仅较好的保留了原始图像的细节信息,而且还提高了放大图像的边缘平滑度,同时也减小了图像放大算法的运算量.
Image Zoom is commonly used in digital image processing technology,image to enlarge the first image space transformation,followed by gray-scale image interpolation.Larger images after the visual effects in practical applications of how it is particularly important.Therefore the image to enlarge the focus of the issue is how to enlarge the image process to maintain a good resolution and clarity of vision.There are many algorithms to enlarge the image,the key lies in the unknown pixel interpolation methods used.In this paper,a better than traditional interpolation algorithm that is compound parabolic spline interpolation to achieve the image to enlarge.The experimental results show that compared with the traditional image to enlarge algorithm,the algorithm not only retains the good details of the original image information,but also to raise the edge of the enlarged image smoothness.
出处
《中央民族大学学报（自然科学版）》
2013年第S1期88-93,共6页
Journal of Minzu University of China(Natural Sciences Edition)
关键词
图像放大
边缘平滑
复合抛物样条插值
Image Zoom
Edge Smoothing
Compound parabolic interpolation
