Patent ID: 6067378
Filing Date: 2000-05-23
Classification: G06T,H04N

Abstract:
A method for reconstructing a lip contour signal (LCS) having N number of inter-connected edge points (EP's) representing the position and shape of a lip image in a face image, wherein the lip image and LCS are symmetrical, respectively and N is a predetermined positive integer, the method comprising the steps of:(a) providing a standard lip contour signal (SLCS) having N number of inter-connected standard edge points (SEP's) corresponding to the N number of edge points (EP's) of the LCS, respectively, the SLCS representing the position and shape of a predetermined standard lip image, wherein the standard lip image and SLCS are symmetrical, respectively;(b) matching the center point of the LCS as an origin of a two dimensional xy-plane with the center point of the SLCS;(c) correcting the coordinates of the N number of EP's of the LCS to generate a corrected LCS having N number of corrected EP's by stretching the x-coordinates of the N number of EP's in accordance with a predetermined stretching rule under the condition that a horizontal left end EP (HLEP) and a horizontal right end EP (HREP) of the corrected LCS coincide with a horizontal left end SEP (HLSEP) and a horizontal right end SEP (HRSEP) of the SLCS, respectively, wherein an x-coordinate of the HRSEP is greater than that of the HREP on the xy-plane; and(d) obtaining N number of reconstructed edge points (REP's) based on the N number of corrected EP's of the corrected LCS and the N number of SEP's of the SLCS to thereby generate a reconstructed LCS having the N number of REP's.