GEOG 330 Chapter 13-1 - 1/12 GEOG 330 INTRODUCTION TO...

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GEOG 330 INTRODUCTION TO REMOTE SENSING Ch 12 Remote Sensing of Urban Landscapes 1/12
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Urban Remote Sensing Applications ! Urban landscapes are composed of a diverse assemblage of materials (concrete, asphalt, metal, plastic, glass, water, glass, shrubs, tress, and soils) arranged by humans in complex ways to build housing, transportation systems, utilities, commercial, industrial, and recreational facilities. ! Remote sensing applications include: • Zoning regulation • Commerce development • Tax assessment • Transportation and utilities • Parks, recreation, and tourism • Emergency management • Real Estate 2/12
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Urban/Suburban Temporal Resolution Considerations ! Three types of temporal resolutions should be considered when monitoring urban environments: 1. Developmental cycle or how the urban/suburban phenomena progress through identifiable stages. Stages of residential development can be identified by the presence, absence, or progress of five major factors including: Partial or complete clearing Land subdivision Roads Buildings Landscaping 3/12
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Urban/Suburban Temporal Resolution Considerations ! Stages of residential development 4/12
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Urban/Suburban Temporal Resolution Considerations 2. The second type of temporal resolution is the repeat cycle of the sensor. 1994 1996 ! Some urban application are not as time sensitive as those dealing with vegetation cycles. ! Some others like traffic studies might require very frequent revisit times. 5/12
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Urban/Suburban Temporal Resolution Considerations 3. The third type of temporal resolution is how often the information is required for land management applications. ! Urban sprawl studies. 1974 - 1,040 urban ha. 1994 - 3,263 urban ha. 315% increase 6/12
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Urban/Suburban Spectral Resolution Considerations ! Most urban applications will be solved using the visible portion of the spectrum. ! Black and white panchromatic (0.5 – !"# %&’ () *(+() imagery (0.4 – !"# %&’ ,- *(&&(.+/ 0-12 3() 2141)&,.,.5 building perimeter, area, and height. ! Thermal infrared portion of the spectrum (3 – 67 %&’ ,- 0-12 4( (849,. urban temperatures. ! Hyperspectral data is not usually required for urban applications. 7/12
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Urban/Suburban Spatial Resolution Considerations ! Generally, the higher the spatial resolution, the more detailed information that can be extracted in the urban environment imagery. ! Minimum nominal spatial resolution rule: A minimum of four pixels are required within an object to identify it (< one-half the width of the smallest dimension) ! Methods to assess the interpretability of imagery based on the spatial resolution of the remote sensor data include the National Imagery Interpretation Rating Scales (NIIRS) criteria, the Area Weighted Average Resolution (AWAR). 8/12
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Land-Use/Land-Cover Classification ! Land use refers to how the land is being used by human beings.
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This note was uploaded on 01/16/2012 for the course GEOG 330 taught by Professor Marsh during the Fall '07 term at University of Arizona- Tucson.

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GEOG 330 Chapter 13-1 - 1/12 GEOG 330 INTRODUCTION TO...

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