Title :
Optimal vertex adjustment method using a Viterbi algorithm for vertex-based shape coding
Author :
Lee, Jin-hak ; Chung, Jae-won ; Kim, Jae-kyoon
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
fDate :
4/29/1999 12:00:00 AM
Abstract :
An optimal vertex adjustment method is presented for vertex-based shape coding. The method optimally shifts the vertices, selected by a conventional vertex selection method, within the window that satisfies the allowable maximum distortion using a Viterbi algorithm. Experimental results show that the proposed method reduces the approximation distortion of the contour by ~30% for the same rate over a wide range of distortion, compared with the conventional method
Keywords :
Viterbi decoding; image coding; vectors; Viterbi algorithm; approximation distortion reduction; optimal vertex adjustment method; vertex selection method; vertex-based shape coding;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990514
