Definition:Image compression deals with reducing the amount of data required to represent a digital image by removing of redundant data.
Images can be represented in digital format in many ways. Encoding the contents of a 2-D image in a raw bitmap (raster) format is usually not economical and may result in very large files. Since raw image representations usually require a large amount of storage space (and proportionally long transmission times in the case of file uploads/ downloads), most image file formats employ some type of compression. The need to save storage space and shorten transmission time, as well as the human visual system tolerance to a modest amount of loss, have been the driving factors behind image compression techniques.
Compression methods can be lossy, when a tolerable degree of deterioration in the visual quality of the resulting image is acceptable, or lossless, when the image is encoded in its full quality. The overall results of the compression process, both...
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Marques, O. (2006). Image Compression and Coding. In: Furht, B. (eds) Encyclopedia of Multimedia. Springer, Boston, MA. https://doi.org/10.1007/0-387-30038-4_96
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DOI: https://doi.org/10.1007/0-387-30038-4_96
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