关键词: Cycle-Spinning, 内插, 放大, 小波变换

Abstract: A method of image interpolation enlargement based on Cycle-Spinning is proposed in wavelet domain.Cycle-Spinning has been shown to be effective in image denoising in order to avoid Gibbs-like artifacts.Using the given lower resolution image，the original high resolution image is approximated using zero padding of high-frequency sub-bands followed by inverse wavelet transform.Cycle-Spinning technique is then adopted to improve the resolution of the original high resolution image，and the edge.Simulation results show that proposed method is fast，simple and effective compared with several traditional or emerged improved algorithms，and the higher quality of an enlarged image can be obtained both on edges and in smooth area.

Key words: Cycle-Spinning, interpolation, enlargement, wavelet transform