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| 11. |
The influence of observational interdependence on spectral reflectance relationships with plant and soil variables |
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International Journal of Remote Sensing,
Volume 7,
Issue 2,
1986,
Page 291-294
WILLIAM J. RIPPLE,
BARRY J. SCHRUMPF,
DENNIS L. ISAACSON,
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摘要:
The relationships between spectral reflectance and plot variables in a desert shrub community were studied by repeated observation as biomass was removed from 2·93m2plots. As a result of these repeated observations, interdependence effects were present in the data sets. The spectral/plot relationships were discovered to be weaker with the removal of this observational interdependence. Middle infrared reflectance (2·08–2·35μm) was found to account for more of the variation in the group of plot variables than did reflectance in the other spectral regions tested, and the variable of total moisture was best for explaining the variability of the spectral data.
ISSN:0143-1161
DOI:10.1080/01431168608954684
出版商:Taylor & Francis Group
年代:1986
数据来源: Taylor
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| 12. |
Vegetation index and possibility of complementary parameters from AVHRR/2 |
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International Journal of Remote Sensing,
Volume 7,
Issue 2,
1986,
Page 295-300
S. M. SINGH,
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PDF (207KB)
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摘要:
The data from the Advanced Very High Resolution Radiometer (AVHRR/2) are used for calculating atmospherically corrected temperature difference (ΔT) in the split-window channels, the normalized difference vegetation index (NDVI) and the spectral reflectance (ρ) at channel-I wavelength. An illustration is presented which shows that when there is a significant change (larger than the inherent accuracy) in anyone of these three quantities, the other two quantities also change. This qualitative inference indicates the possibility that these three parameters may complement each other.
ISSN:0143-1161
DOI:10.1080/01431168608954685
出版商:Taylor & Francis Group
年代:1986
数据来源: Taylor
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| 13. |
A texture-enhancement procedure for separating orchard from forest in Thematic Mapper data |
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International Journal of Remote Sensing,
Volume 7,
Issue 2,
1986,
Page 301-304
DANIEL K. GORDONt†,
WARREN R. PHTLIPSON CLEARS,
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PDF (134KB)
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摘要:
A procedure is described for automatically separating temperate fruit tree orchardsfrom mixed deciduous forest in LANDSAT Thematic Mapper data. A filter is applied to enhance the texture of bands 4 and 3 prior to ratioing, smoothing, and level-slicing to a binary image on the basis of supervised training. Including the binary image in supervised classification of single date imagery has reduced misclassification of forest as orchard from 75 percent of the forest pixels to fewer than 7 per cent.
ISSN:0143-1161
DOI:10.1080/01431168608954686
出版商:Taylor & Francis Group
年代:1986
数据来源: Taylor
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