Image compression
In this chapter, we introduce compression methods for a different type of data, namely, digital images or images for short. General compression methods may be applied to images. However, certain characteristics of image data, if identified, often lead to more effective data compression algorithms. We first consider the image data.
10.1 Image data
By image data we actually mean the representation of real-life graphics in digital form which can be processed by conventional computers. The word digital here means that the data in this representation are discrete. For example, the display area of a conventional computer screen consists of a large number of small discrete units called pixels. The pixels are mapped onto ...
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