计算机工程 ›› 2006, Vol. 32 ›› Issue (24): 198-200.doi: 10.3969/j.issn.1000-3428.2006.24.071

• 人工智能及识别技术 • 上一篇    下一篇

二维不可分插值滤波器在图像放大中的应用

袁 红1,3,水鹏朗2   

  1. (1. 西安电子科技大学数学系,西安 710071;2. 西安电子科技大学雷达信号处理重点实验室,西安 710071; 3. 临沂师范学院数学系,临沂 276005)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-12-20 发布日期:2006-12-20

Application of 2D Nonseparable Interpolating Filter in Image Magnification

YUAN Hong1,3, SHUI Penglang2   

  1. (1. Dept. of Mathematics, Xi’dian University, Xi’an 710071; 2. Key Lab for Radar Signal Processing, Xi’dian University, Xi’an 710071; 3. Dept. of Mathematics, Linyi Normal University, Linyi 276005)
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-12-20 Published:2006-12-20

摘要: 给出了一种图像尺寸放大的新方法,该方法利用了线性相位二维不可分离的FIR插值滤波器,与最近邻域法、双线性插值法、双三次样条插值法、三次B-样条插值法、子序列fft内插法等相比,该方法可以获得更好的放大结果,实验结果和理论分析也表明了这点。

关键词: 上采样, 下采样, 二维不可分离插值滤波器

Abstract: In this paper, a new way to image size zooming is proposed. The algorithm to design two dimensional nonseparable linear phase finite-impulse response (FIR) interpolation filter is given. Comparing with the nearest neighbor interpolator, the bilinear interpolator, the bicubic interpolator and the cubic B-spline interpolator methods, this interpolator algorithm is better according to the experimental effects and theoretical analysis.

Key words: Upsampling, Downsampling, 2-D nonseparable FIR interpolation filter