Title :
An algorithm for 3-D automatic movement detection by means of standard TV cameras
Author :
Borghese, N.A. ; Ferrigno, G.
Author_Institution :
Centro di Bioingegneria, Politecnico di Milano, Italy
Abstract :
An algorithm for the computation of 3-D coordinates (space intersection) of marked points on a moving subject surveyed by a pair of TV cameras is presented. It has been designed to meet the requirements of routine analysis in biomechanics laboratories. 3-D geometrical arrangement of the TV cameras (space resection) is obtained by means of a method based on an iterative least-squares estimation, and requires little time for calibration operations; 3-D coordinates are computed by means of a fast geometrical intersection algorithm. The whole algorithm has been extensively used in different laboratories, and its reliability and accuracy are reported.
Keywords :
biological techniques and instruments; biomechanics; laboratory apparatus and techniques; television applications; 3D automatic movement detection; 3D coordinates; biomechanics laboratories; fast geometrical intersection algorithm; iterative least-squares estimation; marked points; space intersection; space resection; standard TV cameras; Algorithm design and analysis; Biomechanics; Calibration; Cameras; Humans; Joints; Laboratories; Performance analysis; Position measurement; TV; Algorithms; Biomechanics; Humans; Image Processing, Computer-Assisted; Movement; Television;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
