Title :
Image zooming by improved interpolation scheme using FFT
Author :
Wang, Zhiwei ; Wang, Zhongde ; Soltis, J.J. ; Miller, W.C.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
In this paper, an improved 2D interpolation scheme through DFT, which takes advantage of the periodicity of DFT, is proposed. This method achieves much better performance and in addition no edge impairment can be observed when the block technique is employed for the sake of time saving. Example images show that the improvement is remarkable
Keywords :
fast Fourier transforms; image processing; interpolation; 2D interpolation scheme; DFT; FFT; block technique; image zooming; Digital signal processing; Discrete Fourier transforms; FETs; Fast Fourier transforms; Frequency domain analysis; Image reconstruction; Interpolation; Low pass filters; Signal processing algorithms; Two dimensional displays;
Conference_Titel :
Circuits and Systems, 1993., Proceedings of the 36th Midwest Symposium on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-1760-2
DOI :
10.1109/MWSCAS.1993.343263
