Image coding making use of B-spline surfaces

Author

Watanabe, Toshiaki

Author_Institution

Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan

Volume

7

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

409

Lastpage

413

Abstract

This paper presents a new coding algorithm making use of B-spline surfaces. Points on the surface are regarded as image data, and the values of defining polygon vertices are coded. Simulation results show the possibility that the performance of this algorithm becomes better than that of discrete cosine transform (DCT) when parameter values of the surface are set according to the position and the steepness of edges, and the number of polygon vertices is set according to the fineness of the image and the bit rate. It is known that a B-spline surface is transformed by transforming the defining polygon net. Therefore, using this algorithm, it becomes possible to apply image transformations to compressed data (polygon vertices) instead of to decoded data

Keywords

data compression; image coding; splines (mathematics); B-spline surfaces; DCT; algorithm performance; bit rate; compressed data; discrete cosine transform; image coding algorithm; image data; image transformations; polygon vertices; simulation results; Bit rate; Decoding; Discrete cosine transforms; Displays; Image coding; Image edge detection; Image storage; Research and development; Spline; Surface fitting;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.564118

Filename

564118