Provides classes to handle input of images from and output of images to files in various common formats.

Currently, support exists for: the "PBMPLUS" formats PBM, PGM and PPM (ASCII versions only); SIF, a simple home-grown format; PNG, the Portable Network Graphics format; and JFIF, the JPEG File Interchange Format.

For each supported format, there exists an encoder class, implementing the {@link com.pearsoneduc.ip.io.ImageEncoder} interface, and a decoder class, implementing the {@link com.pearsoneduc.ip.io.ImageDecoder} interface. Images can be read or written by calling the methods defined in these interfaces, freeing client code from the need for any explicit knowledge of the file formats supported by the system.