PARAMETER IDENTIFYING METHOD FOR STEREOSCOPIC SHAPE FUNCTION

PURPOSE:To avoid convergence to a local minimum and to set each parameter to a true optimum value by correcting the size of the inclination of the respective parameters in an evaluation function in correspondence to an importance degree to the specification of a shape. CONSTITUTION:When observing data are inputted, at first, an (i) which shows gradually changing stage is caused to be (i)=1 and an initial value X1 of a parameter group X1 is set. Next, gradient f(X1) of the evaluation function is obtained from the initial value X1 and inputted observing data. On the basis of an expression I [Xi+1=Xi-C. f(Xi)], a parameter group X2 of the next gradually changing stage is obtained. On the basis of an expression II (¦Xi+1-Xi¦