COSC 109 Chapter Notes - Chapter 2: Subtractive Color, Cmyk Color Model, Lossless Compression
31 Jan 2014
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Document Summary
Digitization is to convert analog information to digital data. Digitization is a 2-step process: sampling, quantization. In order to get a picture from being blurry you can increase the sampling rate and the bit depth. Both of these cause the file size to increase: sampling rate refers to how frequent you take a sample. In digital imaging when you increase the sampling rate it is the same as increasing the image resolution. There are consequences of higher image resolution: you have more pixels (sample points) to represent the same scene, meaning that the pixel dimension of the captured image is increased. Increasing image size from 25 x 20 to 100 x 80. The file of the digitized image is larger: you gain more detail from the original picture. In the real world a natural image has an infinite number of colors, its colored in continuous tones.
