Title :
Image Resizing Using Exponential B-Spline Functions
Author :
Du, Huiqian ; Mei Wenbo
Author_Institution :
Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China
Abstract :
Recently, exponential B-spline functions have been demonstrated as a new bridge between discrete and continuous time signal. In this paper, we propose an imaging resizing algorithm which exploits the merits of exponential B-spline functions. The theoretical background is introduced, and the analysis and synthesis filter are deduced. The main advantage of the algorithm is that it maintains the high frequency components of image so that the resized image has better visual quality. In addition, it can be used to resize images by any factor. The experimental results show that the algorithm outperforms the standard methods.
Keywords :
filtering theory; image sampling; interpolation; splines (mathematics); continuous time signal; discrete time signal; exponential B-spline function; filter synthesis; image resizing algorithm; interpolation; sampling theory; Bridges; Digital images; Filters; Frequency response; Green function; Interpolation; Medical services; Polynomials; Signal synthesis; Spline;
Conference_Titel :
Image and Signal Processing, 2009. CISP '09. 2nd International Congress on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4244-4129-7
Electronic_ISBN :
978-1-4244-4131-0
DOI :
10.1109/CISP.2009.5305799