Patent ID: 7224823

Claim:
A parameter estimation apparatus comprising: an image input that converts optical data into electronic data; a parameter input that inputs coordinates of a first feature point from first electronic data input from the image input; a learning section that calculates auto-correlation information from a plurality of items of first electronic data, calculates cross-correlation information from the plurality of items of first electronic data and coordinates of a plurality of first feature points, calculates a feature extraction matrix for estimating coordinates of a second feature point of second electronic data input from the image input using the auto-correlation information and the cross-correlation information, and outputs a first average vector calculated from the plurality of items of first electronic data, a second average vector calculated from the coordinates of the plurality of first feature points and the feature extraction matrix; a correlation information database that stores the first average vector, the second average vector and the feature extraction matrix from the learning section; and a parameter estimator that estimates coordinates of the second feature point, using the second electronic data, the first average vector, the second average vector and the feature extraction matrix.