100468122-Photogrammetry-and-Remote-Sensing

Such sensors facilitate fine discrimination between

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Such sensors facilitate fine discrimination between different targets based on their spectral response in each of the narrow bands. Remote Sensing Ayman F. Habib 20 Radiometric Resolution Radiometric resolution of an imaging system describes its ability to discriminate very slight differences in the recorded energy. The finer the radiometric resolution of a sensor, the more sensitive it is to detecting small differences in reflected or emitted energy. For digital imagery, the radiometric resolution is defined by the number of bits used for coding the recorded grey values. – By comparing a 2-bit image with an 8-bit image , one can see that there is a large difference in the level of discernible details. Remote Sensing Ayman F. Habib 21 Radiometric Resolution 8 bits per pixel 2 bits per pixel Remote Sensing Ayman F. Habib 22 Temporal Resolution Temporal resolution of a remote sensing system refers to the frequency with which it images the same area. Frequent imaging is important for: Disaster & environmental management. For example, floods, oil slicks, spread of forest disease from one year to the next. Change detection applications. Remote Sensing Ayman F. Habib 23 Multi-Temporal Imagery Calgary 56 Calgary 72 Remote Sensing Ayman F. Habib 24 Multi-Temporal Imagery Calgary 1999 Calgary 2001
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Remote Sensing Ayman F. Habib 25 Multi-Temporal Imagery Calgary 2002 Remote Sensing Ayman F. Habib 26 Remote Sensing Data Acquisition System Historical Overview Remote Sensing Ayman F. Habib 27 Historical Review: Balloons First image was captured in 1859 Remote Sensing Ayman F. Habib 28 Historical Overview: Balloons Boston from a Balloon (1860) St. Luis Island, Paris Captured by Balloon, 1860 Remote Sensing Ayman F. Habib 29 Historical Overview: Kites Aerial Photography from a Kite, 1880 Labrugauere, France from a kite (1889) Remote Sensing Ayman F. Habib 30 Historical Overview: Kites kite photos, San Francisco, California right after the infamous 1906 earthquake that, together with fire, destroyed most of the city
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Remote Sensing Ayman F. Habib 31 Historical Overview: Pigeons Remote Sensing Ayman F. Habib 32 Historical Overview: Planes (1908) New York Reims Remote Sensing Ayman F. Habib 33 Historical Overview, Rockets Historically, the first photos taken from a small rocket, from a height of about 100 meters, were imaged from a rocket designed by Alfred Nobel, launched in 1897 over a Swedish landscape Remote Sensing Ayman F. Habib 34 Historical Overview: Rockets A camera succeeded in photographing the landscape at a height of 600 meters by Alfred Maul's rocket during a 1904 launch. Remote Sensing Ayman F. Habib 35 Historical Overview: Satellites Sputnik-1, 1957 Remote Sensing Ayman F. Habib 36 Historical Overview: Satellites First US satellite Explorer-1, 1958
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Remote Sensing Ayman F. Habib 37 Historical Overview: Satellites Apollo-8, First photo of Earth from space, 1968 Africa, July 1972 Apollo 17 Remote Sensing Ayman F. Habib 38 Remote Sensing Data Acquisition Systems Remote Sensing Ayman F. Habib 39 Ground Based Sensors Ground-based sensors are often used to record detailed information about the surface.
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