Detecting three dimensional motion is one of the most important issues on robot vision. In this paper, an essential equation, the motion-range equation, is introduced for detecting 3D motion from 'range images'. The equation is represented in linear form against 3D motion parameters. Using the equation, the motion parameters are directly obtained without detecting the positions of an object. Statistical analysis is made and computational method is established by means of the equation. Analysis of the equation is performed. Experimental results on actual range images prove that the motion detection method described is simple and efficient. >
['Tamio Arai', 'Kazunori Umeda']
Measurement of 3D motion parameters from range images