The Discrete Fourier Transform on hexagonal remote sensing image

6th Digital Earth Summit

地球科学;计算机科学

Li, Yalu^1 ; Ben, Jin^1 ; Wang, Rui^1 ; Du, Lingyu^1

Information Engineering University, China^1

关键词: Global discrete grid;    Multi resolutions;    Multisource data;    Mutual transformations;    Remote sensing images;    Spatial reference;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/46/1/012022/pdf
DOI  :  10.1088/1755-1315/46/1/012022

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Global discrete grid system will subdivide the earth recursively to form a multi-resolution grid hierarchy with no Overlap and seamless which help build global uniform spatial reference datum and multi-source data processing mode which takes the position as the object and in the aspect of data structure supports the organization, process and analysis of the remote sensing big data. This paper adopts the base transform to realize the mutual transformation of square pixel and hexagonal pixel. This paper designs the corresponding discrete Fourier transform algorithm for any lattice. Finally, the paper show the result of the DFT of the remote sensing image of the hexagonal pixel.