INTRODUCTION TO IMAGE PROCESSING
All of the Gems in this section involve operations performed on images, or two-dimensional arrays of pixels. Often, a graphics programmer may want to change the size, the colors, or other features in an image. The first three Gems describe techniques for stretching or scaling images in various contexts. The first Gem emphasizes speed, while the next two emphasize quality. The fourth Gem describes a method for displaying a full color image using a reduced set of colors.
In some cases, it is useful to combine features from several images. The seventh Gem applies the now-familiar algebra of image composition to black and white bitmaps, or 1-bit images. The eighth Gem discusses how to blur two images selectively ...
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