GIS Dictionary

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digital image

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  1. [digital image processing] An image composed of pixels with numbers representing grayscale or color shades.
  2. [graphics (computing)] An image stored in binary form and divided into a matrix of pixels. Each pixel consists of a digital value of one or more bits, defined by the bit depth. The digital value may represent, but is not limited to, energy, brightness, color, intensity, sound, elevation, or a classified value derived through image processing. A digital image is stored as a raster and may contain one or more bands.

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