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  • 1
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    Data resolution versus forestry classification (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: E80-10189 , NASA-CR-160610
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Adaptive training class statistics. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Formulas are derived for updating the mean vector and covariance matrix of a training class as new training fields are included and old training fields deleted from the class. These statistics of the class are expressed in terms of the already available statistics of the fields.
    Keywords: MATHEMATICS
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Comments on 'An iterative clustering procedure.' (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The limitation of the iterative clustering procedure proposed by Haralick and Dinstein is indicated with the help of two examples and is construed as the effect of the linear structure of the T transformation.
    Keywords: MATHEMATICS
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Quality of signatures (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Three conclusions are drawn on the usability, inherent variations, and noise aspects of the spectral signatures processed from data collected by the Field Signature Acquisition System (FSAS). Conclusions are based on the spectral data collected from winter wheat of the 1972/73 season, grown at Texas A and M University, College Station, Texas.
    Keywords: GEOPHYSICS
    Type: NASA-CR-134263 , LEC-3175
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    A new image enhancement algorithm with applications to forestry stand mapping (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The author has identified the following significant results. Results show that the new algorithm produced cleaner classification maps in which holes of small predesignated sizes were eliminated and significant boundary information was preserved. These cleaner post-processed maps better resemble true life timber stand maps and are thus more usable products than the pre-post-processing ones: Compared to an accepted neighbor-checking post-processing technique, the new algorithm is more appropriate for timber stand mapping.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E77-10115 , NASA-CR-150915 , LEC-6178 , JSC-09695
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    ISODATA: Thresholds for splitting clusters (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The author has identified the following significant results. The parameter AD (average distance) as used in the ISODATA program was critically examined. Thresholds of AD to decide on the splitting of clusters were obtained. For the univariate case, 0.84 was established as a sound choice, after examining several simple, as well as composite, distributions and also after investigating the probability of misclassification when points have to be reassigned to the newly identified clusters. For the multivariate case, the empirical threshold (N-0.16)/square root of N was extrapolated. A final criticism on AD was that AD would lose its effectiveness as a discriminative measure for the present purpose when N was large.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E79-10092 , NASA-CR-151544 , LEC/HASD-640-TR-058
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Nationwide forestry applications program. A literature review of major remote sensing projects mapping forest land in the United States, using satellite data and automatic data processing (1978)
    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: E79-10072 , NASA-CR-151858 , LEC-12131 , JSC-13978
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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