During the last few years a number of systems for graphics generation and image processing have been developed by the authors. Depending on the application, one can consider many kinds of systems; for example for simple analysis of cellular images, a system that realizes the video mixing between a camera and graphics data from a microcomputer would be adequate. For a more elaborate analysis, such as angiographic and echographic images requiring a high level of interactivity, a semi-automatic acquisition system linked to a host computer would be necessary. Limits in precision and execution time of these semi-automatic systems leads to independent work-stations that realize digital acquisition, processing, and display of images.