作者: Lawrence David Bergman , John Alan Gerth , John Timothy Robinson , Bernice Ellen Rogowitz
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摘要: Digitized images are imageS which are represented in a digital data format. Digitized images are commonly repre sented in “rasterized” or “bit mapped” formats in which the value of each pixel of the image is individually represented in the data. In the case of monochrome images, each pixel may be represented by data indicating its luminance on a grey Scale ranging from black (no luminance) to white (maximum luminance). Thus, a typical monochrome image data file may include one byte for each pixel, providing a range of 256 different luminance values for each pixel. In the case of “color images, each pixel may be represented by data indicating the values of its respective red, green and blue (RGB) components. For example, an image may be represented in a" 24 bit data format which includes one byte for each of the RGB components of each pixel, thus providing a range of over 16 million different pixel values …