Title :
A new vertex coding scheme using the center of the gravity center of a triangle
Author :
Yun, Byoung-Ju ; Yi, Jong-Won ; Kim, Seong-Dae
Author_Institution :
Division of Electrical Engineering, Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, Yusong-gu, Teajon, 305-701, Korea
Abstract :
This paper presents an efficient contour-based method for the lossy shape coding. An object is approximated by a polygon because of its inherent quality control and the high-level shape features it intrinsically carries. For encoding the vertices of a polygon, we use the fixed length code because it has more merits than variable length code. The most important factor to determine the amount of bits for a polygon with FLC is the dynamic range of the relative addresses between consecutive vertices of a polygon. To reduce the amount of bits for a polygon, we focus on reducing the dynamic range of vertices using the center of the gravity of a triangle. Simulation results show outstanding performances of the proposed method in the rate-distortion sense.
Keywords :
Approximation methods; Dynamic range; Encoding; Gravity; Image reconstruction; Shape; Transform coding;
Conference_Titel :
Signal Processing Conference, 2000 10th European
Conference_Location :
Tampere, Finland
Print_ISBN :
978-952-1504-43-3