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ECW (file format)

Index ECW (file format)

ECW (Enhanced Compression Wavelet) is a proprietary wavelet compression image format optimized for aerial and satellite imagery. [1]

16 relations: Discrete wavelet transform, Geographic data and information, Hertz, Hexagon AB, Image file formats, Intergraph, JPEG 2000, Leica Geosystems, Lossy compression, Map projection, Megabyte, Nearmap, Perth, Proprietary software, Random-access memory, Wavelet transform.

Discrete wavelet transform

In numerical analysis and functional analysis, a discrete wavelet transform (DWT) is any wavelet transform for which the wavelets are discretely sampled.

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Geographic data and information

Geographic data and information are defined in the ISO/TC 211 series of standards as data and information having an implicit or explicit association with a location relative to the Earth.

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The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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Hexagon AB

Hexagon AB is a global technology group headquartered in Sweden.

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Image file formats

Image file formats are standardized means of organizing and storing digital images.

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Intergraph Corporation is an American software development and services company.

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JPEG 2000

JPEG 2000 (JP2) is an image compression standard and coding system.

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Leica Geosystems

Leica Geosystems (formerly known as Wild Heerbrugg or just Wild) based in eastern Switzerland produces products and systems for surveying and geographical measurement (geomatics).

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Lossy compression

In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content.

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Map projection

A map projection is a systematic transformation of the latitudes and longitudes of locations from the surface of a sphere or an ellipsoid into locations on a plane.

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The megabyte is a multiple of the unit byte for digital information.

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Nearmap is an Australian aerial imagery technology and location data company that provides frequently-updated, high-resolution aerial imagery of 88% of Australia's population, 68% of the US population, and 72% of the New Zealand population.

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Perth is the capital and largest city of the Australian state of Western Australia.

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Proprietary software

Proprietary software is non-free computer software for which the software's publisher or another person retains intellectual property rights—usually copyright of the source code, but sometimes patent rights.

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Random-access memory

Random-access memory (RAM) is a form of computer data storage that stores data and machine code currently being used.

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Wavelet transform

In mathematics, a wavelet series is a representation of a square-integrable (real- or complex-valued) function by a certain orthonormal series generated by a wavelet.

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Redirects here:

.ecw, Enhanced Compressed Wavelet File, Enhanced compression wavelet.


[1] https://en.wikipedia.org/wiki/ECW_(file_format)

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