A Pointing Device Using Coordinate Transformation by Neurofuzzy GMDH

Abstract

Personal computers have potential possibility as a tool for aiding users who have disabilities. Though many computer input devices for the use of the handicapped have been developed, they do not work well when they are set away from the user or in aslant. We have developed a pointing device that translates handicapped person's movements into direct movements of the computer's cursor by measuring several color markers on the user's head. For sensitivity tuning of the cursor movement and coordinate transformation, the neurofuzzy GMDH is employed, whose partial descriptions are represented by RBFs. A heuristic model selection criterion called "Distorter" is employed to determine the optimum number of layers in neurofuzzy GMDH. The click motion is replaced with opening the mouth. The software is developed for the use of almost all MS-Windows95 application programs.