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  • 1
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    Land use and mapping (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The ERTS program provides data that can be used to derive information relative to the actual use of the land resource, in a practical and timely manner. ERTS data provide coverage of total land areas, and its repetitive nature enables the detection and monitoring of changes taking place in land use. Generally, the techniques and the procedures used to extract information from ERTS data may be categorized as pertaining to either the interpretations of ERTS imagery or to the use of digital data and computer techniques. Examples are given of the use of ERTS-1 data for land use classification in: (1) New England areas; (2) Chesapeake Bay and Washington, D.C.; (3) Mississippi Gulf Coast; (4) Los Angeles, California; (5) Houston, Texas; and (6) Phoenix, Arizona.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Third ERTS Symp., Vol. 2; p 138-146
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Land use and mapping (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This summary is divided into two basic sections-one dealing with land use classification and delineation, and the other dealing with mapping. The term land use classification is used in respect to the actual use of land rather than land capability, land suitability, or the potential use of land. The classification of actual use of the land, as defined by man's activities that are related to the land, may be only inferred, rather than directly interpreted, in the case of the identification and classification of some surface features or vegetation cover types. Also, in the case of some surface features or vegetational cover types, the specific activity involving man's use of the land may not be designated in a four-level classification system until level 3 or level 4 is reached. Most investigations employed or implied a hierarchial land use classification scheme with more than two levels, but mainly addressed themselves to classifying and delineating surface features (land use) that would fall in the first two levels of a three- or four-level hierarchial scheme. Although not all investigators used a hierarchial classification scheme or concurred with the idea (computer-implemented classifications with digital data are not conducive to a hierarchial classification approach), the classification system proposed by the U.S. Department of the Interior is used as reference.
    Keywords: GEOPHYSICS
    Type: 3rd ERTS Symp., Vol. 3; p 15-32
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Relationship between forest clearing and biophysical factors in tropical environments: Implications for the design of a forest change monitoring approach (1984)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The relationship between forest clearing, biophysical factors (e.g, ecological zones, slope gradient, soils), and transportation network in Costa Rica was analyzed. The location of forested areas at four reference datas (1940, 1950, 1961, and 1977) as derived from aerial photography and LANDSAT MSS data was digitilized and entered into a geographically-referenced data base. Ecological zones as protrayed by the Holdridge Life Zone Ecology System, and the location of roads and railways were also digitized from maps of the entire country as input to the data base. Information on slope gradient and soils was digitized from maps of a 21,000 square kilometer area. The total area of forest cleared over four decades are related to biophysical factors was analyzed within the data base and deforestation rates and trends were tabulated. The relatiohship between forest clearing and ecological zone and the influence of topography, sils, and transportation network are presented and discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E85-10051 , NASA-TM-87405 , NSTL/ERL-230 , NAS 1.15:87405
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Procedures for gathering ground truth information for a supervised approach to a computer-implemented land cover classification of LANDSAT-acquired multispectral scanner data (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Procedures for gathering ground truth information for a supervised approach to a computer-implemented land cover classification of LANDSAT acquired multispectral scanner data are provided in a step by step manner. Criteria for determining size, number, uniformity, and predominant land cover of training sample sites are established. Suggestions are made for the organization and orientation of field team personnel, the procedures used in the field, and the format of the forms to be used. Estimates are made of the probable expenditures in time and costs. Examples of ground truth forms and definitions and criteria of major land cover categories are provided in appendixes.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-RP-1015 , JSC-12910 , S-478
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    The use of LANDSAT digital data and computer implemented techniques for an erosion hazard-reforestation needs assessment (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E78-10050 , NASA-CR-155509 , REPT-165
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    The use of LANDSAT digital data and computer-implemented techniques for an agricultural application (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Agricultural applications procedures are described for use of LANDSAT digital data and other digitalized data (e.g., soils). The results of having followed these procedures are shown in production estimates for cotton and soybeans in Washington County, Mississippi. Examples of output products in both line printer and map formats are included, and a product adequacy assessment is made.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-RP-1016 , JSC-12897 , S-477
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Computer-implemented land use classification with pattern recognition software and ERTS digital data (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Significant progress has been made in the classification of surface conditions (land uses) with computer-implemented techniques based on the use of ERTS digital data and pattern recognition software. The supervised technique presently used at the NASA Earth Resources Laboratory is based on maximum likelihood ratioing with a digital table look-up approach to classification. After classification, colors are assigned to the various surface conditions (land uses) classified, and the color-coded classification is film recorded on either positive or negative 9 1/2 in. film at the scale desired. Prints of the film strips are then mosaicked and photographed to produce a land use map in the format desired. Computer extraction of statistical information is performed to show the extent of each surface condition (land use) within any given land unit that can be identified in the image. Evaluations of the product indicate that classification accuracy is well within the limits for use by land resource managers and administrators. Classifications performed with digital data acquired during different seasons indicate that the combination of two or more classifications offer even better accuracy.
    Keywords: COMPUTERS
    Type: PAPER-L1 , 3d ERTS-1 Symp., Vol. 1, Sect. A; p 331-337
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Computer implemented land use classification with ERTS digital data during three seasons (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E76-10228 , NASA-TM-X-72993 , REPT-135
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Procedures for gathering ground truth information for a supervised approach to a computer implemented land cover classification of LANDSAT acquired multispectral scanner data (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E78-10198 , NASA-TM-79742 , REPT-163
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Land Use and Mapping (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Land use management, classification, and mapping based on ERTS-1 observations - Conference
    Keywords: GEOPHYSICS
    Type: E73-10198 , NASA-TM-X-68925 , Symp. on Significant Results Obtained from ERTS-1; Mar 05, 1973 - Mar 09, 1973; New Carrollton, MD; United States
    Format: application/pdf
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