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Companies also cited "modern building construction, better building fire codes, and improved fire protection methods for the decline in importance of fire insurance maps." [6] From the late 1930s to the late 1950s, Sanborn's annual profit fell from $500,000 to just $100,000. About thirty insurance companies accounted for most of the company's ...
Daniel Alfred Sanborn (April 5, 1827 in Somerville, Massachusetts – April 11, 1883 in Brooklyn, New York) was a surveyor who founded the Sanborn Map Company, a well-known provider of fire insurance maps. Before starting his company he produced insurance maps for Boston and several cities in Tennessee for the Aetna Insurance Company.
Aerial survey is a method of collecting geomatics or other imagery data using airplanes, helicopters, UAVs, balloons, or other aerial methods. Typical data collected includes aerial photography, Lidar, remote sensing (using various visible and invisible bands of the electromagnetic spectrum, such as infrared, gamma, or ultraviolet) and ...
Data collection or data gathering is the process of gathering and measuring information on targeted variables in an established system, which then enables one to answer relevant questions and evaluate outcomes. Data collection is a research component in all study fields, including physical and social sciences, humanities, [2] and business ...
Geospatial Intelligence data sources include imagery and mapping data, whether collected by commercial satellite, government satellite, aircraft (such as Unmanned Aerial Vehicles [UAV] or reconnaissance aircraft), or by other means, such as maps and commercial databases, census information, GPS waypoints, utility schematics, or any discrete ...
There are many methods and types of instruments used in geophysical surveys. Technologies used for geophysical surveys include: [1] Seismic methods, such as reflection seismology, seismic refraction, and seismic tomography. This type of survey is carried out to discover the detailed structure of the rock formations beneath the surface of the Earth.
A variety of methods can be used for the multispectral classification of images: Algorithms based on parametric and nonparametric statistics that use ratio-and interval-scaled data and nonmetric methods that can also incorporate nominal scale data (Duda et al., 2001), Supervised or unsupervised classification logic,
GeoEye Inc. (formerly Orbital Imaging Corporation, or ORBIMAGE) was an American commercial satellite imagery company based in Herndon, Virginia. [3] GeoEye was merged into the DigitalGlobe corporation on January 29, 2013.