计算机科学 ›› 2014, Vol. 41 ›› Issue (8): 322-326.doi: 10.11896/j.issn.1002-137X.2014.08.068

• 图形图像与模式识别 • 上一篇    

基于ENVI软件的遥感影像内插方法偏差改正

米慧超,张小娣,赖锴   

  1. 河南财经政法大学计算机与信息工程学院 郑州450002;西北工业大学计算机学院 西安710072;河南财经政法大学计算机与信息工程学院 郑州450002
  • 出版日期:2018-11-14 发布日期:2018-11-14
  • 基金资助:
    本文受国家自然科学基金(71210003),河南省自然科学基金项目(132400410270),河南省科技攻关项目(122102210563),河南省科技攻关项目(132102210215)资助

Correction of Interpolation Methods in ENVI for Remotely Sensed Imagery

MI Hui-chao,ZHANG Xiao-di and LAI Kai   

  • Online:2018-11-14 Published:2018-11-14

摘要: ENVI是由遥感领域的科学家采用交互式数据语言IDL(Interactive Data Language)开发的一套功能强大的遥感图像处理软件,其能够快速、便捷、准确地从遥感影像中提取所需的信息。为了对影像进行更好的分析和处理,ENVI提供了一套基础的影像内插方法用于对影像进行插值处理。然而,由于理论上的缺陷,其采用的插值方法存在一定的偏差,从而导致后续的影像处理工作中引入了人为的误差影响。因此基于ENVI软件所用的影像内插方法,从理论入手指出其不足之处并对其模型进行改正。通过实验证明,改正后的内插方法能够获得更为准确的插值影像,从而为下一步的处理提供更为准确的数据结果。

关键词: ENVI软件,影像内插,双线性插值,三次卷积插值

Abstract: ENVI software was developed in IDL (Interactive Data Language) to process remotely sensed imagery,from which it can extract useful information quickly,conveniently and accurately.ENVI software provides a set of image interpolation methods to analyse and process imagery.However,due to the theoretic shortage,a bias exists in the interpolation image obtained by interpolation methods of ENVI software.Moreover,this bias will be transmitted to the subsequent image processing procedure.In this paper,the interpolation model was modified theoretically.And the experimental results indicate that the proposed modified interpolation algorithms outperform the original ones and therefore obtain more accurate results.

Key words: ENVI software,Image interpolation,Double bilinear interpolation,Cubic interpolation

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