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Digital imagery is becoming more and more ubiquitous as time goes by.
With the proliferation of means whereby image data can be obtained (digital cameras, satellite imaging, image scanning) there is now a vast amount of image data in use, all of which consumes valuable storage and bandwidth resources. The need to use datastore and bandwidth resources more efficiently is what drives the field of image compression. Image compression refers to a whole raft of techniques to encode image data for the purpose of reducing its size for easier transmission or persistence. A compressed image has undergone such encoding. The goal of an image compression scheme is to achieve the maximum possible degree of image file exchange and storage efficiency whilst preserving a minimum level of fidelity in the image that
results after reconstruction from the compressed format.