Patent ID: 6996496

Claim:
An information processing system including an information processor, the information processing system comprising: measured-value input means for inputting a measured value indicating a spatial position of an object, the measured value being measured by and output from a first 3D-position measuring device; real-space-value input means for inputting a real-space value which corresponds to the measured value input by the measured-value input means and which indicates the position of the object in a real space; correspondence computing means for computing correspondence between the measurement space and the real space based on the measured value input by the measured-value input means and the real-space value input by the real-space-value input means; correcting means for correcting an error of the measured value input by the measured-value input means based on the correspondence between the measurement space and the real space computed by the correspondence computing means, the error resulting from the ambient environment of the first 3D-position measuring device; and a second 3D-position measuring device includes an ultrasonic 3D-position measuring device, which can measure the position of the object without being affected by the ambient environment, measures the position of the object existing at the same position as that measured by the first 3D-position measuring device so as to output the measured value, the real-space-value input means inputs the measured value output from the second 3D-position measuring device as the real-space value.