Aerial photography is the taking of photographs of the ground from an elevated position. The term usually refers to images in which the camera is not supported by a ground-based structure.
aerial photograph
See Also: oblique photograph, orthophotograph, vertical photograph ...
Aerial Photography - The process of taking photography from an aircraft using specialized photographic equipment.
Aerial photographs are among the most important, widely available, and commonly utilized kinds of remotely sensed images. They are used for all manner of land resources, cartographic, and appraisal surveys in the public and private sectors.
Figure 3. Base map produced in ARC/INFO with 1962 aerial photograph showing the study area.
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Aerial Photography: Photographs of a part of the earth's surface taken by a camera mounted in an aircraft for mapping purposes. This usually consists of a series of overlapping vertical photos taken in strips which can form the basis for mapping.
Aerial photograph
A photograph taken from aircraft is known as an aerial photo (Figure 2.2). These photographs are normally taken to prepare maps of the area. Aerial photographs give the "birds eye" view of the earth’s surface.
Aerial Photography - The method of taking photographs from an aerial platform (aircraft). 1. Vertical photography, some times called orthophotography, is used for photogrammetric mapping and requires a high degree of accuracy. 2.
Aerial photographs can enhance the use of your topographic map by providing an aerial view of the ground features shown on the map sheet. They are available for all NTS map sheets and may be obtained from the National Air Photo Library.
Aerial Photography
The taking of photographs from the air with a camera mounted on an aircraft.
Air Rights Lots ...
Aerial Photographs: It is expensive to hire a helicopter to help you gather aerial photos.
Aerial Photography Database
A database (library) of photographic negatives and prints of provincial aerial photography acquired over the past fifty or more years.
4 Aerial photography
Aerial photographs may reveal archaeological sites directly, where they are extant, or as crop, soil or other surface indications where the site is buried.
Oblique Aerial Photograph, Opisometer, Orthographic Projection, Origin, Ozone,
Parallels, Passive Remote Sensing, Polar Axis, Prime Meridian, ...
Aerial photographs have been a main source of information about what is at the Earth's surface almost since the beginning of aviation more than 100 years ago.
Aerial Photograph
An image of a portion of the surface of the earth that is either captured from an oblique angle or from a point perpendicular to the subject area, depending on the intended use.
Aerial photography serves two main purposes in the soil mapping process. For one, all new NRCS soil surveys are published on orthophotoquads.
Aerial Photography Information System
APMI
Aerial Photography Micrographic Index System (USGS) ...
The aerial photographs available on the site are USGS aerial photographs flown at 1:40,000 scale. The site allows for zooming in on the photographs to a resolution of 1 meter.
using aerial photographs and techniques for making accurate measurements from them, photogrammetry is the source of most data on topography (ground surface elevations) used for input to GIS
Surveying ...
3-21. Aerial photographs may be used if the station to be recovered can be identified on the photographs. Using features that are permanent and prominent on both the photograph and the ground will permit surveyors to reach the station site.
5. Why do aerial photographs usually appear at the bottom of the TOC?
6. What determines when a button or menu item in the View graphical user interface (GUI) will be disabled or enabled?
7. How many themes will fit into a view?
The National Aerial Photography Program (NAPP) imagery and NAPP-like photography are the primary sources of aerial photography used in the production of 1-meter digital orthophotos for the National Digital Orthophoto Program (NDOP).
Using scanned aerial photographs as a visual guide, you can ask a GIS about the geology or hydrology of the area, or even about how close a swamp is to end of a street.
NAPP: National Aerial Photography Program (NAPP)
NAVD: North American Vertical Datum
NDIS: Network Driver Interface Specification ...
Draw imagines from aerial photography or satellite imagery.
Event Tracking ...
htmlhtml Comments and feedback: USGS Web Team Last modification: 07-01-97@09:30 (stm) Relating information from different sources If you could relate information about the rainfall of your State to aerial photographs of your county, ...
Aerial Photograph: A photograph, usually taken from an airplane, as a means of remotely recording ground level events.
Orthophoto An aerial photograph or mosaic of photos that have been corrected for distortion so that the image is 'planimetrically correct'. Overshoot That portion of a line digitized past its intersection with another line.
Biennial Workshop on Color Aerial Photography and Videography. Am. Soc. Photogram. Remote Sens. 12:6-29. FAUST, N. L., W. H. ANDERSON, AND J. L. STARR. 1991. Geographic information systems and remote sensing future computing environment. Photogram.
An Adobe file format readable with free software (Acrobat Reader) photogrammetry Use of aerial photographs to produce planimetric and topographic maps of the earth`s surface and of features of the built environment.
The term may be taken broadly as comprising all the steps needed to produce a map: planning, aerial photography, field surveys, photogrammetry, editing, color separation, and multicolor printing.
Methods include aerial photography, radar, and satellite imaging. resampling The process of reducing image data set size by representing a group of pixels with a single pixel.
For example an aerial photograph may need to be stretched (orthorectified) using photogrammetry so that its pixels align with longitude and latitude gradations (or whatever grid is needed).
The view on his computer screen w as constructed from a series of aerial photographs that had been scanned and converted to form a digital image.
If you could relate information about the rainfall of your State to aerial photographs of your county, you might be able to tell which wetlands dry up at certain times of the year.
Ortho-rectify : A digital ortho-rectified image is a satellite or aerial photographic image that has been digitally corrected to ensure ground features are depicted in their correct geographic location.
Natural resource-oriented users will find that up-to-date satellite imagery, aerial photographs, as well as topographic, climatic and hydrographic data are all useful in environmental planning and resource monitoring.
Image map - (1) A map created from aerial photographs or satellite images by assembling them spatially (i.e. making a mosaic), correcting them geometrically (i.e. georeferencing and scaling) and adding cartographic symbols and place names, ...
Aerial photographs may be either vertical or oblique. Vertical photographs can be truly vertical (nadir), or slightly tilted (less than 3 degree from the vertical). Usually aerial photos are tilted to some degree.
In the Late 1950's, fixed wing aerial photography was extensively developed. In the early 1960's, the space race had begun between Russia and the United States.
orthophotography The process of aerial photographs that have been rectified to produce an accurate image of the Earth by removing tilt and relief displacements which occurred when the photo was taken.
Photogrammetry uses aerial photographs to produce planimetric and topographic maps of the earth's surface and of features of the built environment.
National government users that employ aerial photography or satellite imagery in mapping or intelligence activities use Bentley Descartes. These include military, census, cadastre, and mapping agencies.
photogrammetry Simple aerial photography contains distortion of shape, scale, and area due to several factors: curvature of the earth, differences in elevation on the ground, tilt of the aircraft, and parallax of the camera lens.
Scale - Spatial data are typically derived from existing maps or aerial photographs. The scale of the source maps determines the scale of the data.
orthophotograph - Aerial photographs that have been processed to correct for scale variations and image displacement resulting from relief or terrain variations and camera tilt.
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ESRI Dictionary ...
Figure 1: A Stereo Pair of Aerial Photographs Figure 2: Satellite Imagery
More information on how mapping information is extracted from aerial photography can be found at: ...
Topographic height is usually created using satellite or aerial photography and represents a more detailed model of the earth's surface. Elevation values are computed relative to the average local sea level.
A line digitized along the center of a linear feature. 2. A line drawn from the center point of a vertical aerial photograph through the transposed center point of an overlapping aerial photograph" (Gittings & Patterson, 1999).
Or perhaps you have aerial photographs for an area, but you only want the photo data to display when you are viewing an area the size of a city block. At a smaller scale, the photo will obscure roads and parcel lines.
The corridors are useful in delineating boundaries for detailed data collection, such as high resolution aerial photography and ownership records.
How geographic data, such as aerial photography and elevation information, can be used to create photorealistic scenes
ArcGlobe Animations
View demo. [WMV] ...
Image data ranges from satellite images and aerial photographs, to scanned maps that have been converted from printed to digital format.
Figure 6- Image-based Raster Data
Grid Data ...
Software tools that automatically extract features from satellite images or aerial photographs are gradually replacing what has traditionally been a time-consuming capture process.
ArcPad supports a multilayer environment with industry-standard vector map and raster image display that includes aerial photographs and satellite imagery. Data can also be provided from the Internet via wireless technology.
ARC-Pad Data Formats ...
Acquiring information about an object without contacting it physically. Methods include aerial photography, radar, and satellite imaging.
Scale ...
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Remote Sensing - acquiring information about an object without contacting it physically. Methods include aerial photography, radar, and satellite imaging.
Polynomial transformations are often applied to correct variable scale differences, as appearing in uncorrected satellite imagery or aerial photographs.
Variable scale differences in an image ...
JPEG - Popular format of raster file, very efficient but lossy compression makes it more suitable for snapshots than precision aerial photographs (ITT Space systems).
 See also: Information, Image, GIS, Map, Feature
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