<P>PROBLEM TO BE SOLVED: To provide a method for reconstructing an ear canal more precisely. <P>SOLUTION: A set of aural OCT (optical coherence tomography) scan data including pixel frames and scan lines for composing a three-dimensional data set is provided. A frame number and a scan line number are extracted that have the coherence intensity corresponding one or more markers in the OCT scan guide, and a base frame number and a base line number in regard to the one or more markers are received. Based on the ear scan marker frame number and ear scan marker frame line, as well as the base marker frame number and the base frame line, the starting position and orientation for OCT ear scanning are obtained. For each scan line, a pixel number having its largest coherence intensity value is found, the offset distance of the pixel from the scan guide is calculated, and the surface of the ear canal is reconstructed based on the offset data on the distance. <P>COPYRIGHT: (C)2007,JPO&INPIT 
METHOD FOR RECONSTRUCTING EAR CANAL AND COMPUTER-READABLE PROGRAM STORING APPARATUS