Automatic geometric processing for very high resolution optical satellite data based on vector roads and orthophotos

Pehani, Peter (author), Čotar, Klemen (author), Marsetič, Aleš (author), Zaletelj, Janez (author), Oštir, Krištof (author)

In response to the increasing need for fast satellite image processing SPACE-SI developed STORM—a fully automatic image processing chain that performs all processing steps from the input optical images to web-delivered map-ready products for various sensors. This paper focuses on the automatic geometric corrections module and its adaptation to very high resolution (VHR) multispectral images. In the automatic ground control points (GCPs) extraction sub-module a two-step algorithm that utilizes vector roads as a reference layer and delivers GCPs for high resolution RapidEye images with near pixel accuracy was initially implemented. Super-fine positioning of individual GCPs onto an aerial orthophoto was introduced for VHR images. The enhanced algorithm is capable of achieving accuracy of approximately 1.5 pixels on WorldView-2 data. In the case of RapidEye images the accuracies of the physical sensor model reach sub-pixel values at independent check points. When compared to the reference national aerial orthophoto the accuracies of WorldView-2 orthoimages automatically produced with the rational function model reach near-pixel values. On a heterogeneous set of 41 RapidEye images the rate of automatic processing reached 97.6%. Image processing times remained under one hour for standard-size images of both sensor types.

• Language: English
• Keywords: automatic geometric processing, high resolution data, satellites, remote sensing, automatic image processing, geometric corrections, extraction of ground control points, physical sensor model, rational function model, earth observation
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering; FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2016
• Number of pages: 26 str.
• Numbering: Vol. 8, iss. 4, art. 343
• PID: 20.500.12556/RUL-130347
• UDC: 528:55
• ISSN on article: 2072-4292
• DOI: 10.3390/rs8040343
• COBISS.SI-ID: 39753261
• Publication date in RUL: 14.09.2021

Record is a part of a journal

• Title: Remote sensing
• Shortened title: Remote sens.
• Publisher: MDPI
• ISSN: 2072-4292
• COBISS.SI-ID: 32345133

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 19.04.2016

Secondary language

• Language: Slovenian
• Keywords: avtomatsko geometrijsko procesiranje, visoko resolucijski podatki, sateliti, daljinsko zaznavanje