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Compiling and editing agricultural strata boundaries with remotely sensed imagery and map attribute data using graphics workstationsThe USDA presently uses labor-intensive photographic interpretation procedures to delineate large geographical areas into manageable size sampling units for the estimation of domestic crop and livestock production. Computer software to automate the boundary delineation procedure, called the computer-assisted stratification and sampling (CASS) system, was developed using a Hewlett Packard color-graphics workstation. The CASS procedures display Thematic Mapper (TM) satellite digital imagery on a graphics display workstation as the backdrop for the onscreen delineation of sampling units. USGS Digital Line Graph (DLG) data for roads and waterways are displayed over the TM imagery to aid in identifying potential sample unit boundaries. Initial analysis conducted with three Missouri counties indicated that CASS was six times faster than the manual techniques in delineating sampling units.
Document ID
19920052715
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cheng, Thomas D.
(NASA Ames Research Center Moffett Field, CA, United States)
Angelici, Gary L.
(NASA Ames Research Center Moffett Field, CA, United States)
Slye, Robert E.
(NASA Ames Research Center Moffett Field, CA, United States)
Ma, Matt
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: IGARSS ''91: Annual International Geoscience and Remote Sensing Symposium
Location: Espoo
Country: Finland
Start Date: June 3, 1991
End Date: June 6, 1991
Accession Number
92A35339
Distribution Limits
Public
Copyright
Other

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