Real time interpolation algorithm based on Lanczos kernel

Ying GUO; Lun LI; Peng WANG

doi:10.11959/j.issn.1000-436x.2017115

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Real time interpolation algorithm based on Lanczos kernel

Papers | 更新时间：2024-06-05

- Real time interpolation algorithm based on Lanczos kernel
- Journal on Communications Vol. 38, Issue 6, Pages: 142-147(2017)
- 作者机构：
  
  武汉数字工程研究所，湖北武汉 430074
- 作者简介：
- 基金信息：
  
  The Shipping Foundation of China(11J3.7.2)
- DOI：10.11959/j.issn.1000-436x.2017115
  CLC： TP391
- Online First：2017-06，
  
  Published：25 June 2017
- 稿件说明：
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Ying GUO, Lun LI, Peng WANG. Real time interpolation algorithm based on Lanczos kernel[J]. Journal on Communications, 2017, 38(6): 142-147.
DOI：

Ying GUO, Lun LI, Peng WANG. Real time interpolation algorithm based on Lanczos kernel[J]. Journal on Communications, 2017, 38(6): 142-147. DOI： 10.11959/j.issn.1000-436x.2017115.

摘要

针对现有彩色图像插值算法的实时性及可靠性不能兼备的问题，提出了一种高效的实时彩色图像缩放算法，算法基于Lanczos核生成可应用于整个目标图像的核查找表，并且目标图像所有像素的插值仅涉及定点小数运算，计算复杂度低；同时算法采取了优化的光栅扫描方法，内存需求低、效率高。实验结果表明，该算法不仅获得了较好的图像质量，而且计算复杂度远低于经典的图像缩放算法，能有效实现彩色图像甚至彩色视频的任意倍数实时缩放。

Abstract

In order to improve the timeliness and reliability of color image scaling algorithms

a high effective real-time color image scaling algorithm was proposed

which first generated the kernel look up table that could be used for whole target image based on Lanczos kernel

and interpolation of all target image pixels had only fixed point operation which had low computational complexity.Meanwhile

an optimized method for rasterizing pixels of target image was proposed

which needed little memory space but embraced high efficiency of memory utilization.The experiment results show that the proposed algorithm achieves good image quality

and the computational complexity is far more less than classic image scaling algorithms.So the proposed algorithm can effectively implement real-time resizing of color images and color videos in any scaling factors.

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references

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