Image Compression Algorithm with Radix-4 FFT
Image compression technology has been the research focus in the field of image processing all the time. In this paper, Radix-4 FFT is introduced to realize limit distortion coding of image. The presented method aims to solve the problems of Fourier transform on existing complexity and long time-consuming, and it can reduce the number of data store by conformal symmetry of Fourier transform. Using Radix-4 FFT, the time-consuming can be highly shortened and two different kinds of quantization tables are designed according to image compression ratio and the quality of image.
H. Wang, B.J. Zhang, X.Z. Liu, D.Z. Luo, S.B. Zhong
J. B. Deng et al., "Image Compression Algorithm with Radix-4 FFT", Advanced Materials Research, Vols. 143-144, pp. 404-408, 2011