The digital image path encompasses a multiplicity of functions such as scanning, importing, printing, copying, and faxing of images. As such, a variety of computations is required to transform such diverse inputs to a form suitable for output on a raster display or printer. These computations frequently involve colorimetric and spatial image processing algorithms such as color calibration, color transformation, segmentation, compression, filtering, halftoning, rasterization, etc. This talk examines a number of representative pathways through the digital image processing pipe and elaborates on some of the more typical algorithms involved.