BufferedImage is the key class in the immediate-mode imaging API. This class manages an image in memory and provides methods for storing, interpreting, and rendering the pixel data. A BufferedImage can be rendered through either a Graphics or a Graphics2D rendering context.
A BufferedImage is essentially an Image with an accessible data buffer. A BufferedImage has a ColorModel and a Raster of image data.
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The ColorModel provides a color interpretation of the image's pixel data. The Raster represents the rectangular coordinates of the image, maintains image data in memory, and provides a mechanism for creating multiple subimages from a single image data buffer. The Raster also provides methods for accessing specific pixels within the image.
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