Embedded machine vision applications of Java are still rare. Java's support for video digitization and serial port I/O is poor. The lack of I/O has limited Java's application in the area of image processing systems. Our 3D scanner uses Java for the digitization and processing of image sequences. The digitization is enabled by two API's. The first, called QuickTime for Java is an Apple Computer product that has been made available for Macintosh and Windows platforms. The second, called javax.comm, consists of a specification from Sun, with implementations available for several platforms. Lazy instantiation is not new, nor, for that matter, is the singleton design pattern. However, parametric lazy instantiation is new and so is the parametric singleton.