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Automated Registration and Orthorectification Package (AROP)
Entry ID: USDA_ARS_AROP

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Summary

Abstract: Accurate geo-referencing information is a basic requirement for combining remote satellite imagery with other geographic information. To detect changes in time-series satellite images, it is extremely important for the images to be precisely co-registered and orthorectified, so that images acquired from different sensors and dates can be compared directly.

Precise registration relates satellite ... images to the ground reference based on carefully selected ground control points between the image and corresponding ground objects. Co-registration matches two images based on the tie points in the images. Although most commercial remote sensing software packages provide precise registration or co-registration, the selection of control points or tie points needs to be done manually. This is a time-consuming process that is not feasible for a large amount of data processing. Even though some satellite data are precisely registered and orthorectified, mismatches of up to a few pixels are common in early data sources.

The topographical variations of the earth’s surface and the satellite view zenith angle affect the pixel’s distance projected onto the satellite image. The distortion inherent in the image is determined by topographical elevation. For example, an off-nadir view of 5 degrees at a site with a terrain height of 1000 meters can cause displacement of 120 meters (about 4 Landsat Thematic Mapper (TM) pixels). The orthorectification process is used to correct the pixel displacement caused by the topographical variations at the off-nadir viewing and to make the image orthographic, with every pixel in its correct location regardless of elevation and viewing direction.

We developed an automated registration and orthorectification package (AROP) for Landsat and Landsat-like data processing. It uses precisely registered and orthorectified Landsat data (e.g., GeoCover or recently released free Landsat Level 1T data from the USGS EROS data center) as the base image to co-register and orthorectify the warp image and thus to make geo-referenced time-series images consistent in the geographic extent, spatial resolution, and projection. This package has been tested on the Landsat Multi-spectral Scanner (MSS), TM and Enhanced TM Plus (ETM+), Terra ASTER, CBERS CCD, and IRS-P6 AWiFS data.

The development of the AROP package was supported by the U.S. Geological Survey (USGS) Landsat Science Team project and the NASA EOS project. The package was initially developed at the NASA Goddard Space Flight Center (from September 2005 to June 2011). Previous version can be downloaded from the NASA GSFC Landsat Ecosystem Disturbance Adaptive Processing System (LEDAPS) web site. Further improvement and continuous maintenance are now being undertaken in the Hydrology and Remote Sensing Laboratory, Agricultural Research Service, U.S. Department of Agriculture (USDA) by Dr. Feng Gao.

[Summary provided by the USDA.]

Description: Access the Automated Registration and Orthorectification Package (AROP) (registration required).

Service Citation

Originators: Gao., F., Masek, J. G., Wolfe, R. F.
Title: Automated Registration and Orthorectification Package (AROP)
Release_Date: 2009
Provider: USDA Agricultural Research Service
Edition: 2.2.6
URL: http://www.ars.usda.gov/services/software/download.htm?softwareid=3...

Service Keywords

DATA ANALYSIS AND VISUALIZATION >VISUALIZATION/IMAGE PROCESSING

DATA MANAGEMENT/DATA HANDLING >TRANSFORMATION/CONVERSION

Science Keywords

LAND SURFACE >LAND USE/LAND COVER >LAND COVER

SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >INFRARED IMAGERY

ISO Topic Category

GEOSCIENTIFIC INFORMATION
IMAGERY/BASE MAPS/EARTH COVER

Platform

LANDSAT

Access Constraints User registration is required before downloading.

Use Constraints The package is now being released at no cost to the public for further development. ARS is releasing the AROP so that interested parties can use the software tool for their own needs and purposes. ARS does not foresee providing monetary or technical support to refine, adapt, or use this software tool, and provides no warranty for its use for any purpose. ARS does not reserve any rights or interests in the work that may be performed by others to refine or adapt it. ARS does reserve the right to continue its own refinement of the current version of the software package at a later date, should program needs require it.

Ancillary Keywords

Geo-referencing
Satellite Imagery
Remote Sensing

Service Provider

USDA/ARS > Agricultural Research Service, U. S. Department of Agriculture

Service Organization URL: http://www.ars.usda.gov

Service Provider Personnel
Name: USDA-ARS Phone: 254-770-6500 Fax: 254-770-6561 Contact Address: USDA-ARS Grassland Soil and Water Research Laboratory 808 E. Blackland Rd. City: Temple Province or State: TX Postal Code: 76502 Country: USA

Distribution Media

Distribution_Media: Online
Fees: No fees

Personnel

USDA-ARS
Role: TECHNICAL CONTACT
Phone: 254-770-6500
Fax: 254-770-6561
Contact Address:
USDA-ARS
Grassland Soil and Water Research Laboratory
808 E. Blackland Rd.
City: Temple
Province or State: TX
Postal Code: 76502
Country: USA

TYLER B. STEVENS
Role: SERF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA

Creation and Review Dates

SERF Creation Date: 2012-04-25
SERF Last Revision Date: 2012-05-01

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